Apparatuses for constructing displacement aggregate piers are disclosed. In one example, a mandrel is provided comprising a tamper head that has cutting teeth on the leading edge thereof. In another example, hydrojet nozzles are provided within one or more of the cutting teeth of the tamper head. In yet another example, the mandrel comprises grout tubes (or grout injection lines) and/or grout inspection lines. In yet another example, the mandrel and/or tamper head can comprise cutting teeth, hydrojet nozzles, grout tubes (or grout injection lines), grout inspection lines, and any combinations thereof.
A system, apparatus and method for increasing the efficiency of and reducing the environmental impact of photovoltaic panel support elements including a vertical panel support designed for embedment into soil or ground that has a load transfer element for increasing resistance on the applied vertical, lateral, and uplift loads of photovoltaic panels.
Extensible shells and related methods for constructing a support pier are disclosed. An extensible shell can define an interior for holding granular construction material and define a first opening at a first end for receiving the granular construction material into the interior and a second opening at a second end. The extensible shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the extensible shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the extensible shell to form a support pier.
A system and method for installing an aggregate pier in a soil matrix includes a pipe configured to interface with a torque driver for rotating the pipe. A helix is disposed on the pipe and configured to advance/withdraw the pipe based on direction of rotation. A compacting device is disposed between the distal end of the pipe and the helix. It extends radially outward and upward. In some embodiments, the compacting device is configured as a frustum. A lift in an aggregate pier is formed by rotating the pipe in a second direction to withdraw a portion of the pipe from the soil matrix thereby creating a void; (b) filling the void with aggregate; (c) rotating the pipe in the first direction to advance the pipe. The compacting device contacts the aggregate disposed in the void and imparts an axial and radial force.
A system for and method of stabilizing rail track structures using a load transfer apparatus is disclosed. The load transfer apparatus includes a vertical load transfer element with at least one cross-sectional rib and a top load transfer element with at least one longitudinal vertical fin, wherein the top load transfer element is used to transfer applied locomotive and rail car loads to the vertical load transfer element. In one embodiment, the vertical load transfer element comprises a plurality of cross-sectional ribs spaced along a length of the vertical load transfer element. In another embodiment, the top load transfer element comprises a plurality of longitudinal vertical fins spaced along a perimeter of the top load transfer element to enhance stability of the top load transfer element.
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures Engineering and design services for construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures Engineering and design services for construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures Engineering and design services for construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures Engineering and design services for construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures
10.
METHODS AND APPARATUSES FOR COMPACTING SOIL AND GRANULAR MATERIALS
An apparatus for densifying and compacting granular materials comprising a drive shaft having a first diameter and a compaction end, and a set of one or more diametric expansion elements attached to an exterior of the compaction end of the drive shaft, wherein the one or more diametric expansion elements, in their expanded state, form compaction surfaces having a second diameter greater than the first diameter of the drive shaft.
E02D 3/046 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol
E01C 21/00 - Appareils ou procédés pour la stabilisation de la surface pour la construction des routes ou à des fins analogues, p. ex. en mélangeant des agrégats d'emprunt à un liant
E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p. ex. de pieux de compactage
11.
METHODS AND APPARATUS FOR BUILDING EXPANDED SHAFT AUGURED FOUNDATION ELEMENTS
An apparatus for building expanded shaft augured foundation elements, comprising: a dual-section drilling augur having a lower section and an upper section, wherein the lower section and the upper section are configured to rotate relative to each other.
37 - Services de construction; extraction minière; installation et réparation
Produits et services
(1) Civil engineering construction services, namely, soil and subsurface improvement, reinforcement, and stabilization for the support of buildings and other commercial, industrial, residential, and transportation-related structures.
13.
System for and method of stabilizing rail track structures using a load transfer apparatus
A system for and method of stabilizing rail track structures using a load transfer apparatus is disclosed. The load transfer apparatus includes a vertical load transfer element with at least one cross-sectional rib and a top load transfer element with at least one longitudinal vertical fin, wherein the top load transfer element is used to transfer applied locomotive and rail car loads to the vertical load transfer element. In one embodiment, the vertical load transfer element comprises a plurality of cross-sectional ribs spaced along a length of the vertical load transfer element. In another embodiment, the top load transfer element comprises a plurality of longitudinal vertical fins spaced along a perimeter of the top load transfer element to enhance stability of the top load transfer element.
A system and method for installing an aggregate pier in a soil matrix includes a pipe configured to interface with a torque driver for rotating the pipe. A helix is disposed on the pipe and configured to advance/withdraw the pipe based on direction of rotation. A compacting device is disposed between the distal end of the pipe and the helix. It extends radially outward and upward. In some embodiments, the compacting device is configured as a frustum. A lift in an aggregate pier is formed by rotating the pipe in a second direction to withdraw a portion of the pipe from the soil matrix thereby creating a void; (b) filling the void with aggregate; (c) rotating the pipe in the first direction to advance the pipe. The compacting device contacts the aggregate disposed in the void and imparts an axial and radial force.
Extensible shells and related methods for constructing a support pier are disclosed. An extensible shell can define an interior for holding granular construction material and define a first opening at a first end for receiving the granular construction material into the interior and a second opening at a second end. The extensible shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the extensible shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the extensible shell to form a support pier.
Methods and apparatuses for compacting soil and granular materials are disclosed. In some embodiments, the soil compaction apparatuses include an arrangement of diametric expansion elements that, in their expanded state, form a larger compaction surface. In another embodiment, a compaction chamber can be provided with diametric restriction elements and a flow-through passage in the upper portion of the chamber exterior of a drive shaft. The diametric expansion or restriction elements can be fabricated from, for example, individual chains, cables, or wire rope, or a lattice of vertically and horizontally connected chains, cables, or wire rope. Embodiments of the soil compaction apparatus include, but are not limited to, closed-ended driving shafts, open-ended driving shafts, flow-through passages, no flow-through passages, removable rings for holding the diametric expansion/restriction elements, and any combinations thereof.
E02D 3/046 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol
E01C 21/00 - Appareils ou procédés pour la stabilisation de la surface pour la construction des routes ou à des fins analogues, p. ex. en mélangeant des agrégats d'emprunt à un liant
E02D 3/054 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol impliquant une pénétration dans le sol, p. ex. vibro-flottation
E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p. ex. de pieux de compactage
17.
METHODS AND APPARATUSES FOR COMPACTING SOIL AND GRANULAR MATERIALS
Methods and apparatuses for compacting soil and granular materials are disclosed. In some embodiments, the soil compaction apparatuses include an arrangement of diametric expansion elements that, in their expanded state, form a larger compaction surface. In another embodiment, a compaction chamber can be provided with diametric restriction elements and a flow-through passage in the upper portion of the chamber exterior of a drive shaft. The diametric expansion or restriction elements can be fabricated from, for example, individual chains, cables, or wire rope, or a lattice of vertically and horizontally connected chains, cables, or wire rope. Embodiments of the soil compaction apparatus include, but are not limited to, closed-ended driving shafts, open-ended driving shafts, flow-through passages, no flow-through passages, removable rings for holding the diametric expansion/restriction elements, and any combinations thereof.
E02D 3/046 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol
E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p. ex. de pieux de compactage
E01C 21/00 - Appareils ou procédés pour la stabilisation de la surface pour la construction des routes ou à des fins analogues, p. ex. en mélangeant des agrégats d'emprunt à un liant
E02D 3/054 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol impliquant une pénétration dans le sol, p. ex. vibro-flottation
18.
Methods and apparatuses for compacting soil and granular materials
Methods and apparatuses for compacting soil and granular materials are disclosed. In some embodiments, the soil compaction apparatuses include an arrangement of diametric expansion elements that, in their expanded state, form a larger compaction surface. In another embodiment, a compaction chamber can be provided with diametric restriction elements and a flow-through passage in the upper portion of the chamber exterior of a drive shaft. The diametric expansion or restriction elements can be fabricated from, for example, individual chains, cables, or wire rope, or a lattice of vertically and horizontally connected chains, cables, or wire rope. Embodiments of the soil compaction apparatus include, but are not limited to, closed-ended driving shafts, open-ended driving shafts, flow-through passages, no flow-through passages, removable rings for holding the diametric expansion/restriction elements, and any combinations thereof.
E02D 3/046 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol
E01C 21/00 - Appareils ou procédés pour la stabilisation de la surface pour la construction des routes ou à des fins analogues, p. ex. en mélangeant des agrégats d'emprunt à un liant
E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p. ex. de pieux de compactage
19.
Extensible shells and related methods for constructing a ductile support pier
Extensible shells and related methods for constructing a support pier are disclosed. An extensible shell can define an interior for holding granular construction material and define a first opening at a first end for receiving the granular construction material into the interior and a second opening at a second end. The extensible shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the extensible shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the extensible shell to form a support pier.
Apparatuses for constructing displacement aggregate piers are disclosed. In one example, a mandrel is provided comprising a tamper head that has cutting teeth on the leading edge thereof. In another example, hydrojet nozzles are provided within one or more of the cutting teeth of the tamper head. In yet another example, the mandrel comprises grout tubes (or grout injection lines) and/or grout inspection lines. In yet another example, the mandrel and/or tamper head can comprise cutting teeth, hydrojet nozzles, grout tubes (or gout injection lines), grout inspection lines, and any combinations thereof.
Extensible shells and related methods for constructing a support pier are disclosed. An extensible shell can define an interior for holding granular construction material and define a first opening at a first end for receiving the granular construction material into the interior and a second opening at a second end. The extensible shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the extensible shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the extensible shell to form a support pier.
Systems and methods for soil improvement foundation isolation and load spreading are provided. The systems and methods provided herein relate to isolation of structural foundations from soil improvement elements and distributing stress from high stiffness elements to lower stiffness materials. A shear load transfer reduction system may include one or more ground improvement elements for supporting an applied load. A shear break element may be positioned above one or more ground improvement elements. The shear break elements may be configured to have low interface shear strength. Further, systems and methods are provided for creating an engineered slip surface for reducing shear stresses between a laterally loaded foundation and a rigid foundation support element and wherein two slip pads are provided that form the engineered slip surface.
E02D 31/02 - Dispositions de protection pour les fondations ou ouvrages réalisés par des techniques de fondationMesures dans le cadre des techniques de fondation pour protéger le sol ou l'eau du sous-sol, p. ex. prévention ou neutralisation de la pollution par le pétrole contre l'humidité du sol ou l'eau du sol
E02D 35/00 - Redressement, soulèvement ou affalement des fondations ou des constructions érigées sur des fondations
E02D 27/32 - Fondations pour des buts particuliers
E02D 31/10 - Dispositions de protection pour les fondations ou ouvrages réalisés par des techniques de fondationMesures dans le cadre des techniques de fondation pour protéger le sol ou l'eau du sous-sol, p. ex. prévention ou neutralisation de la pollution par le pétrole contre la poussée du terrain ou la pression hydraulique
E04B 1/00 - Constructions en généralStructures qui ne sont limitées ni aux murs, p. ex. aux cloisons, ni aux planchers, ni aux plafonds, ni aux toits
23.
System for and method of stabilizing rail track structures using a load transfer apparatus
A system for and method of stabilizing rail track structures using a load transfer apparatus is disclosed. The load transfer apparatus includes a vertical load transfer element and a top load transfer element, wherein the top load transfer element is used to transfer applied locomotive and rail car loads to the vertical load transfer element. In one embodiment, the top load transfer element includes helical flights. In another embodiment, the top load transfer element includes a flared top. In yet another embodiment, the top load transfer element includes a load transfer cap. In a further embodiment, the top load transfer element includes two or more support legs each with a top support attached thereto. The railroad stabilization system can comprise any one type or any combinations of types of the aforementioned load transfer apparatuses.
Methods and apparatuses for compacting soil and granular materials. The soil compaction apparatuses include an arrangement of diametric expansion elements that, in their expanded state, form a larger compaction surface. In another embodiment, a compaction chamber can be provided with diametric restriction elements and a flow-through passage in the upper portion of the chamber exterior of a drive shaft. The diametric expansion or restriction elements can be fabricated from, for example, individual chains, cables, or wire rope, or a lattice of vertically and horizontally connected chains, cables, or wire rope. Embodiments of the soil compaction apparatus include, but are not limited to, closed-ended driving shafts, open-ended driving shafts, flow-through passages, no flow-through passages, removable rings for holding the diametric expansion/restriction elements, and any combinations thereof.
E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p. ex. de pieux de compactage
E02D 3/046 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol
E01C 21/00 - Appareils ou procédés pour la stabilisation de la surface pour la construction des routes ou à des fins analogues, p. ex. en mélangeant des agrégats d'emprunt à un liant
25.
Soil improvement foundation isolation and load spreading systems and methods
Systems and methods for soil improvement foundation isolation and load spreading are provided. The systems and methods provided herein relate to isolation of structural foundations from soil improvement elements and distributing stress from high stiffness elements to lower stiffness materials. A shear load transfer reduction system may include one or more ground improvement elements for supporting an applied load. A shear break element may be positioned above one or more ground improvement elements. The shear break elements may be configured to have low interface shear strength. Further, systems and methods are provided for creating an engineered slip surface for reducing shear stresses between a laterally loaded foundation and a rigid foundation support element and wherein two slip pads are provided that form the engineered slip surface.
E02D 31/08 - Dispositions de protection pour les fondations ou ouvrages réalisés par des techniques de fondationMesures dans le cadre des techniques de fondation pour protéger le sol ou l'eau du sous-sol, p. ex. prévention ou neutralisation de la pollution par le pétrole contre la transmission des vibrations ou les mouvements dans le sol de fondation
Extensible shells and related methods for constructing a support pier are disclosed. An extensible shell can define an interior for holding granular construction material and define a first opening at a first end for receiving the granular construction material into the interior and a second opening at a second end. The extensible shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the extensible shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the extensible shell to form a support pier.
E02D 3/054 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol impliquant une pénétration dans le sol, p. ex. vibro-flottation
E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p. ex. de pieux de compactage
E02D 3/12 - Consolidation par mise en place dans le sol de produits solidifiants ou obturant les pores
E02D 5/30 - Pieux préfabriqués en béton ou béton armé ou en acier et béton
E02D 5/34 - Pieux en béton ou analogue coulés en place
E02D 5/38 - Pieux en béton ou analogue coulés en place par utilisation de tubages ou autres coffrages
27.
EXTENSIBLE SHELLS AND RELATED METHODS FOR CONSTRUCTING A DUCTILE SUPPORT PIER
Extensible shells and related methods for constructing a support pier are disclosed. An extensible shell can define an interior for holding granular construction material and define a first opening at a first end for receiving the granular construction material into the interior and a second opening at a second end. The extensible shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the extensible shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the extensible shell to form a support pier.
E02D 3/054 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol impliquant une pénétration dans le sol, p. ex. vibro-flottation
E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p. ex. de pieux de compactage
E02D 3/12 - Consolidation par mise en place dans le sol de produits solidifiants ou obturant les pores
E02D 5/30 - Pieux préfabriqués en béton ou béton armé ou en acier et béton
E02D 5/34 - Pieux en béton ou analogue coulés en place
E02D 5/38 - Pieux en béton ou analogue coulés en place par utilisation de tubages ou autres coffrages
28.
Open-end extensible shells and related methods for constructing a support pier
Extensible shells and related methods for constructing a support pier are disclosed. An extensible shell can define an interior for holding granular construction material and define a first opening at a first end for receiving the granular construction material into the interior and a second opening at a second end. The extensible shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the extensible shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the extensible shell to form a support pier.
A soil densification system and method is disclosed. The presently disclosed soil densification system includes an air delivery probe or pipe that can be driven or otherwise installed into a soil mass. An inlet of the air delivery probe is supplied by an air compressor and an air storage tank, which are used for the rapid delivery of air impulses or bursts into the air delivery probe, whereas the air impulses or bursts are expelled out of an outlet of the air delivery probe and into the soil mass. The method of using the presently disclosed soil densification system includes the steps of inserting the end of the air delivery probe into the soil mass to any desired depth and then releasing an impulse or burst of air into the soil mass, thereby forming a densified region in the soil mass via the forces of the air impulse.
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures Engineering and design services for construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction services; civil engineering services; beneath ground construction work; construction of civil engineering structures; construction of soil and subsurface improvement structures; construction of subsurface support structures; construction of soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures. Construction design; civil engineering design; beneath ground construction design; Engineering and design services for construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures; engineering and design services relating to soil and subsurface improvement structures and support structures.
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction services; civil engineering services; beneath ground construction work; construction of civil engineering structures; construction of soil and subsurface improvement structures; construction of subsurface support structures; construction of soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures. Construction design; civil engineering design; beneath ground construction design; Engineering and design services for construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures; engineering and design services relating to soil and subsurface improvement structures and support structures.
33.
OPEN-BOTTOM EXTENSIBLE SHELLS AND RELATED METHODS FOR CONSTRUCTING A SUPPORT PIER
Extensible shells and related methods for constructing a support pier are disclosed. An extensible shell can define an interior for holding granular construction material and define a first opening at a first end for receiving the granular construction material into the interior and a second opening at a second end. The extensible shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the extensible shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the extensible shell to form a support pier.
Extensible shells and related methods for constructing a support pier are disclosed. An extensible shell can define an interior for holding granular construction material and define a first opening at a first end for receiving the granular construction material into the interior and a second opening at a second end. The extensible shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the extensible shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the extensible shell to form a support pier.
A system for constructing a support column includes a mandrel with an upper portion and a tamper head. A feed tube extends through the mandrel for feeding flowable material to the head. The tamper head includes a lower enlarged chamber with a reducing surface at an upper portion and includes a plurality of chain links for compacting material and restricting upward flow of aggregate. The tamper head is of a size providing an enclosed region for allowing cementitious materials to be placed therein. A non-moveable sealed top plate and a separate flowable material supply tube is included via a sealed connection. A pressure gauge for monitoring air pressure within the tube portion is included and allows a support column including a cementitious inclusion on top of an expanded base to be built with a known unitary expanded base volume calculated based on pressure drop indications.
E02D 5/34 - Pieux en béton ou analogue coulés en place
E02D 5/38 - Pieux en béton ou analogue coulés en place par utilisation de tubages ou autres coffrages
E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p. ex. de pieux de compactage
E02D 5/44 - Pieux en béton ou analogue coulés en place par utilisation de tubages ou autres coffrages ayant une base élargie ou des élargissements au bas du pieu
E02D 5/46 - Pieux en béton ou analogue coulés en place réalisés sur place par injection de liants dans des remblais graveleux ou dans le sol
36.
SOIL IMPROVEMENT FOUNDATION ISOLATION AND LOAD SPREADING SYSTEMS AND METHODS
Systems and methods for soil improvement foundation isolation and load spreading are provided. The systems and methods provided herein relate to isolation of structural foundations from soil improvement elements and distributing stress from high stiffness elements to lower stiffness materials. A shear load transfer reduction system may include one or more ground improvement elements for supporting an applied load. A shear break element may be positioned above one or more ground improvement elements. The shear break elements may be configured to have low interface shear strength.
Systems and methods for soil improvement foundation isolation and load spreading are provided. The systems and methods provided herein relate to isolation of structural foundations from soil improvement elements and distributing stress from high stiffness elements to lower stiffness materials. A shear load transfer reduction system may include one or more ground improvement elements for supporting an applied load. A shear break element may be positioned above one or more ground improvement elements. The shear break elements may be configured to have low interface shear strength.
E02D 31/00 - Dispositions de protection pour les fondations ou ouvrages réalisés par des techniques de fondationMesures dans le cadre des techniques de fondation pour protéger le sol ou l'eau du sous-sol, p. ex. prévention ou neutralisation de la pollution par le pétrole
Apparatuses for constructing displacement aggregate piers are disclosed. In one example, a mandrel is provided comprising a tamper head that has cutting teeth on the leading edge thereof. In another example, hydrojet nozzles are provided within one or more of the cutting teeth of the tamper head. In yet another example, the mandrel comprises grout tubes (or grout injection lines) and/or grout inspection lines. In yet another example, the mandrel and/or tamper head can comprise cutting teeth, hydrojet nozzles, grout tubes (or grout injection lines), grout inspection lines, and any combinations thereof.
Methods and apparatuses for compacting soil and granular materials. The soil compaction apparatuses include an arrangement of diametric expansion elements that, in their expanded state, form a larger compaction surface. A compaction chamber can be provided with diametric restriction elements and a flow-through passage in the upper portion of the chamber exterior of a drive shaft. The diametric expansion or restriction elements can be fabricated from, for example, individual chains, cables, or wire rope, or a lattice of vertically and horizontally connected chains, cables, or wire rope. The soil compaction apparatus can be any one of closed-ended driving shafts, open-ended driving shafts, flow-through passages, no flow-through passages, removable rings for holding the diametric expansion/restriction elements, and any combinations thereof.
E01C 21/00 - Appareils ou procédés pour la stabilisation de la surface pour la construction des routes ou à des fins analogues, p. ex. en mélangeant des agrégats d'emprunt à un liant
E02D 3/046 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol
E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p. ex. de pieux de compactage
40.
Method and apparatus for stabilizing slopes and embankments with soil load transfer plates
A system for and method of stabilizing slopes and embankments using one or more soil load transfer elements are disclosed. The present subject matter provides for an efficient method and apparatus for stabilizing shallow landslides and slope instabilities for failing and near-failing soil masses that are underlain by soil materials. The system may include a plurality of load transfer plates affixed to a pile or load transfer section in varying configurations. In one embodiment, one or more upper load transfer plates are preferably used to capture the downslope-moving soil mass and transfer the applied loads to the intermediary pile section. In another embodiment, a plurality of upper load transfer plates can be used to transfer applied loads to a lower pile section.
A system for and method of stabilizing rail track structures using a load transfer apparatus is disclosed. The load transfer apparatus includes a vertical load transfer element and a top load transfer element, wherein the top load transfer element is used to transfer applied locomotive and rail car loads to the vertical load transfer element. In one embodiment, the top load transfer element includes helical flights. In another embodiment, the top load transfer element includes a flared top. In yet another embodiment, the top load transfer element includes a load transfer cap. In a further embodiment, the top load transfer element includes two or more support legs each with a top support attached thereto. The railroad stabilization system can comprise any one type or any combinations of types of the aforementioned load transfer apparatuses.
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures Engineering and design services for construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures
An apparatus and method for ground improvement includes a device having a plurality of tines extending downwardly from a top plate in a manner to achieve displacement of ground material downward and radially outward. The tines may include ridges spaced vertically along an outer surface of the tines. The tines may also be in the form of opposing plates. The device is mechanically driven into the ground to achieve predetermined depths of penetration by the tines/plates. The device is retracted and driven repeatedly to achieve densification. Optionally, voids made by the device can be filled with a flowable media.
An apparatus and method for ground improvement includes a device having a plurality of tines extending downwardly from a top plate in a manner to achieve displacement of ground material downward and radially outward. The tines may include ridges spaced vertically along an outer surface of the tines. The tines may also be in the form of opposing plates. The device is mechanically driven into the ground to achieve predetermined depths of penetration by the tines/plates. The device is retracted and driven repeatedly to achieve densification. Optionally, voids made by the device can be filled with a flowable media.
Extensible shells and related methods for constructing a support pier are disclosed. An extensible shell can define an interior for holding granular construction material and define a first opening at a first end for receiving the granular construction material into the interior and a second opening at a second end. The extensible shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the extensible shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the extensible shell to form a support pier.
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures Engineering and design services for construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures Engineering and design services for construction of civil engineering structures, namely, soil and subsurface improvement structures for support of buildings and other commercial, industrial, residential, and transportation-related structures
48.
METHODS AND APPARATUSES FOR COMPACTING SOIL AND GRANULAR MATERIALS
Methods and apparatuses for compacting soil and granular materials are disclosed. In some embodiments, the soil compaction apparatuses include an arrangement of diametric expansion elements that, in their expanded state, form a larger compaction surface. In another embodiment, a compaction chamber can be provided with diametric restriction elements and a flow-through passage in the upper portion of the chamber exterior of a drive shaft. The diametric expansion or restriction elements can be fabricated from, for example, individual chains, cables, or wire rope, or a lattice of vertically and horizontally connected chains, cables, or wire rope. Embodiments of the soil compaction apparatus include, but are not limited to, closed-ended driving shafts, open-ended driving shafts, flow-through passages, no flow-through passages, removable rings for holding the diametric expansion/restriction elements, and any combinations thereof.
Methods and apparatuses for compacting soil and granular materials are disclosed. In some embodiments, the soil compaction apparatuses include an arrangement of diametric expansion elements that, in their expanded state, form a larger compaction surface. In another embodiment, a compaction chamber can be provided with diametric restriction elements and a flow-through passage in the upper portion of the chamber exterior of a drive shaft. The diametric expansion or restriction elements can be fabricated from, for example, individual chains, cables, or wire rope, or a lattice of vertically and horizontally connected chains, cables, or wire rope. Embodiments of the soil compaction apparatus include, but are not limited to, closed-ended driving shafts, open-ended driving shafts, flow-through passages, no flow-through passages, removable rings for holding the diametric expansion/restriction elements, and any combinations thereof.
ABSTRACT An apparatus for densifying and compacting granular materials comprising a drive shaft, a compaction chamber, and one or more diametric restriction elements, wherein the compaction chamber comprises a pipe and the drive shaft is fitted into one end of the pipe. Date Recue/Date Received 2021-05-25
ABSTRACT An apparatus for densifying and compacting granular materials comprising a drive shaft, a compaction chamber at a lower end of the drive shaft, and one or more diametric expansion elements. An opening is provided in an upper surface of the compaction chamber which comprises a flow-through passage exterior of the drive shaft and configured for accepting granular materials from outside of the drive shaft. Date Recue/Date Received 2021-05-25
A system for and method of stabilizing rail track structures using a load transfer apparatus is disclosed. The load transfer apparatus includes a vertical load transfer element and a top load transfer element, wherein the top load transfer element is used to transfer applied locomotive and rail car loads to the vertical load transfer element. In one embodiment, the top load transfer element includes helical flights. In another embodiment, the top load transfer element includes a flared top. In yet another embodiment, the top load transfer element includes a load transfer cap. In a further embodiment, the top load transfer element includes two or more support legs each with a top support attached thereto. The railroad stabilization system can comprise any one type or any combinations of types of the aforementioned load transfer apparatuses.
Apparatuses for constructing displacement aggregate piers are disclosed. In one example, a mandrel is provided comprising a tamper head that has cutting teeth on the leading edge thereof. In another example, hydrojet nozzles are provided within one or more of the cutting teeth of the tamper head. In yet another example, the mandrel comprises grout tubes (or grout injection lines) and/or grout inspection lines. In yet another example, the mandrel and/or tamper head can comprise cutting teeth, hydrojet nozzles, grout tubes (or grout injection lines), grout inspection lines, and any combinations thereof.
A system for and method of stabilizing rail track structures using a load transfer apparatus is disclosed. The load transfer apparatus includes a vertical load transfer element and a top load transfer element, wherein the top load transfer element is used to transfer applied locomotive and rail car loads to the vertical load transfer element. In one embodiment, the top load transfer element includes helical flights. In another embodiment, the top load transfer element includes a flared top. In yet another embodiment, the top load transfer element includes a load transfer cap. In a further embodiment, the top load transfer element includes two or more support legs each with a top support attached thereto. The railroad stabilization system can comprise any one type or any combinations of types of the aforementioned load transfer apparatuses.
Apparatuses for constructing displacement aggregate piers are disclosed. In one example, a mandrel is provided comprising a tamper head that has cutting teeth on the leading edge thereof. In another example, hydrojet nozzles are provided within one or more of the cutting teeth of the tamper head. In yet another example, the mandrel comprises grout tubes (or grout injection lines) and/or grout inspection lines. In yet another example, the mandrel and/or tamper head can comprise cutting teeth, hydrojet nozzles, grout tubes (or grout injection lines), grout inspection lines, and any combinations thereof.
A system for and method of stabilizing slopes and embankments using one or more soil load transfer elements are disclosed. The present subject matter provides for an efficient method and apparatus for stabilizing shallow landslides and slope instabilities for failing and near-failing soil masses that are underlain by soil materials. The system may include a plurality of load transfer plates affixed to a pile or load transfer section in varying configurations. In one embodiment, one or more upper load transfer plates are preferably used to capture the downslope-moving soil mass and transfer the applied loads to the intermediary pile section. In another embodiment, a plurality of upper load transfer plates can be used to transfer applied loads to a lower pile section.
A system for and method of stabilizing slopes and embankments using one or more soil load transfer elements are disclosed. The present subject matter provides for an efficient method and apparatus for stabilizing shallow landslides and slope instabilities for failing and near-failing soil masses that are underlain by soil materials. The system may include a plurality of load transfer plates affixed to a pile or load transfer section in varying configurations. In one embodiment, one or more upper load transfer plates are preferably used to capture the downslope-moving soil mass and transfer the applied loads to the intermediary pile section. In another embodiment, a plurality of upper load transfer plates can be used to transfer applied loads to a lower pile section.
An apparatus and method for ground improvement includes a device having a plurality of tines extending downwardly from a top plate in a manner to achieve displacement of ground material downward and radially outward. The tines may include ridges spaced vertically along an outer surface of the tines. The tines may also be in the form of opposing plates. The device is mechanically driven into the ground to achieve predetermined depths of penetration by the tines/plates. The device is retracted and driven repeatedly to achieve densification. Optionally, voids made by the device can be filled with a flowable media.
E02D 3/046 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol
E02D 3/054 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol impliquant une pénétration dans le sol, p. ex. vibro-flottation
E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p. ex. de pieux de compactage
E02D 3/12 - Consolidation par mise en place dans le sol de produits solidifiants ou obturant les pores
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
(1) Construction services, namely, soil and subsurface improvement, reinforcement and stabilization of structures for support of buildings and other commercial, industrial, residential, and transportation-related structures; civil engineering and design services, namely, soil and subsurface improvement, reinforcement and stabilization of structures for support of buildings and other commercial, industrial, residential, and transportation-related structures.
Field-assembled plate piles and methods of using same are disclosed. The field-assembled plate piles include, for example, a support rod and a plate, wherein the plate can be fastened to the support rod by various means, such as, but not limited to, bolts, clips, rails, and any combinations thereof. A method of using the presently disclosed field-assembled plate piles includes, but is not limited to, the steps of receiving the field-assembled plate pile in its disassembled state at the soil reinforcement site, carrying all components of the field-assembled plate pile to the exact installation location, assembling the field-assembled plate pile at the installation location, and driving or otherwise installing the field-assembled plate pile into the soil mass.
A device for compaction is provided that includes a compaction tool and a vibration device. The compaction tool is adapted to be lowered vertically into a soil area to be compacted. The vibration device being configured to be placed at an upper end on the compaction tool. The compaction tool being moveable only in the vertical direction by the vibration device. The compaction tool at its bottom end has a tool head on which at least one ripping tool is arranged, which is pivotable around a horizontal pivot axis into a first position and into a second position. In the first position, the at least one ripping tool is oriented substantially parallel to the compaction tool and in the second position is oriented substantially radially to the compaction tool and radially projects beyond a diameter of the tool head.
E02D 3/054 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol impliquant une pénétration dans le sol, p. ex. vibro-flottation
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction services, namely, construction of civil engineering structures in the nature of densely compacted support columns for foundation support of buildings and other commercial, industrial, residential and transportation-related structures for soil and subsurface improvement, reinforcement, and stabilization Engineering and design services in the field of soil and subsurface improvement, reinforcement, and stabilization
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction services, namely, construction of civil engineering structures in the nature of densely compacted support columns for foundation support of buildings and other commercial, industrial, residential and transportation-related structures for soil and subsurface improvement, reinforcement, and stabilization Engineering and design services in the field of soil and subsurface improvement, reinforcement, and stabilization
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Construction services, namely, construction of civil engineering structures in the nature of densely compacted support columns for foundation support of buildings and other commercial, industrial, residential and transportation-related structures for soil and subsurface improvement, reinforcement, and stabilization Engineering and design services in the field of soil and subsurface improvement, reinforcement, and stabilization
A soil densification system and method is disclosed. The presently disclosed soil densification system includes an air delivery probe or pipe that can be driven or otherwise installed into a soil mass. An inlet of the air delivery probe is supplied by an air compressor and an air storage tank, which are used for the rapid delivery of air impulses or bursts into the air delivery probe, whereas the air impulses or bursts are expelled out of an outlet of the air delivery probe and into the soil mass. The method of using the presently disclosed soil densification system includes the steps of inserting the end of the air delivery probe into the soil mass to any desired depth and then releasing an impulse or burst of air into the soil mass, thereby forming a densified region in the soil mass via the forces of the air impulse.
A soil densification system and method is disclosed. The presently disclosed soil densification system includes an air delivery probe or pipe that can be driven or otherwise installed into a soil mass. An inlet of the air delivery probe is supplied by an air compressor and an air storage tank, which are used for the rapid delivery of air impulses or bursts into the air delivery probe, whereas the air impulses or bursts are expelled out of an outlet of the air delivery probe and into the soil mass. The method of using the presently disclosed soil densification system includes the steps of inserting the end of the air delivery probe into the soil mass to any desired depth and then releasing an impulse or burst of air into the soil mass, thereby forming a densified region in the soil mass via the forces of the air impulse.
A soil densification system and method is disclosed. The presently disclosed soil densification system includes an air delivery probe or pipe that can be driven or otherwise installed into a soil mass. An inlet of the air delivery probe is supplied by an air compressor and an air storage tank, which are used for the rapid delivery of air impulses or bursts into the air delivery probe, whereas the air impulses or bursts are expelled out of an outlet of the air delivery probe and into the soil mass. The method of using the presently disclosed soil densification system includes the steps of inserting the end of the air delivery probe into the soil mass to any desired depth and then releasing an impulse or burst of air into the soil mass, thereby forming a densified region in the soil mass via the forces of the air impulse.
A primary earth penetrating mandrel formed of a hollow shell steel plate has an upper end and an open lower end joined by an upwardly and outwardly tapered wall. The mandrel is driven downwardly in the earth to simultaneously form a vertical cavity while compacting the sidewall of the cavity to provide structural integrity. The mandrel is then moved upwardly from the bottom of the cavity and aggregate is deposited in the bottom of the cavity following which the mandrel is lowered so that its lower end engages the deposited aggregate and densifies the aggregate by vertical vibratory action and static force with these steps being repeated until the pier top is near the surface of the earth. A second embodiment includes a conduit in the primary mandrel for injecting concrete or grout into aggregate previously deposited in the cavity.
A soil reinforcement system including angled soil reinforcement elements to resist seismic shear forces and methods of making same are disclosed. For example, the soil reinforcement system includes an array or grid of angled soil reinforcement elements installed within the ground, wherein the angled reinforcement elements are designed to absorb and/or resist earthquake-induced seismic shear forces by transferring the applied shear forces into axial compressive and tensile forces within each of the angled reinforcement elements.
A soil reinforcement system including angled soil reinforcement elements to resist seismic shear forces and methods of making same are disclosed. For example, the soil reinforcement system includes an array or grid of angled soil reinforcement elements installed within the ground, wherein the angled reinforcement elements are designed to absorb and/or resist earthquake-induced seismic shear forces by transferring the applied shear forces into axial compressive and tensile forces within each of the angled reinforcement elements.
A soil reinforcement system including angled soil reinforcement elements to resist seismic shear forces and methods of making same are disclosed. For example, the soil reinforcement system includes an array or grid of angled soil reinforcement elements installed within the ground, wherein the angled reinforcement elements are designed to absorb and/or resist earthquake-induced seismic shear forces by transferring the applied shear forces into axial compressive and tensile forces within each of the angled reinforcement elements.
Extensible shells and related methods for constructing a support pier are disclosed. A shell can define an interior for holding granular construction material and define an opening for receiving the granular construction material into the interior. The shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the shell to form a support pier.
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
engineering construction services, namely, soil and subsurface improvement, reinforcement, and stabilization engineering design services, namely, soil and subsurface improvement, reinforcement, and stabilization
A system and method of determining lift deflection during construction of aggregate columns allows for real time monitoring of construction to ensure meeting defined parameters. The amount of deflection of a tamper head during tamping is determined multiple times for each lift. When the amount of deflection matches a predetermined value, tamping is stopped.
G01C 9/00 - Mesure de l'inclinaison, p. ex. par clinomètres, par niveaux
G06F 19/00 - Équipement ou méthodes de traitement de données ou de calcul numérique, spécialement adaptés à des applications spécifiques (spécialement adaptés à des fonctions spécifiques G06F 17/00;systèmes ou méthodes de traitement de données spécialement adaptés à des fins administratives, commerciales, financières, de gestion, de surveillance ou de prévision G06Q;informatique médicale G16H)
An apparatus and method for ground improvement includes a device having a plurality of tines extending downwardly from a top plate in a manner to achieve displacement of ground material downward and radially outward. The device is mechanically driven into the ground to achieve predetermined depths of penetration by the tines. The device is retracted and driven repeatedly to achieve densification. Optionally, voids made by the device can be filled with a flowable media.
A tamper device including a shaft for driving a tamper head, and a shield. A tamper head is attached to the end of the shaft for tamping a lift of aggregate in a cavity formed in a ground surface. A shield attached to the tamper device and spaced a predetermined distance above a top surface of the tamper head, the shield having a predetermined length extending upwardly above the tamper head sufficient to prevent sidewalls of a cavity in soft soil in which the tamper device is used from failing and collapsing into the cavity. Methods of constructing aggregate columns with thicker lifts are also disclosed.
37 - Services de construction; extraction minière; installation et réparation
Produits et services
construction of civil engineering structures, namely, soil and subsurface improvement structures in the nature of densely compacted support columns for foundation support of buildings and other commercial, industrial, residential, and transportation-related structures
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Construction of civil engineering structures, namely, soil and subsurface improvement structures in the nature of densely compacted support columns for foundation support of buildings and other commercial, industrial, residential, and transportation-related structures
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Civil engineering construction services, namely, soil and subsurface improvement, reinforcement, and stabilization for the support of buildings and other commercial, industrial, residential, and transportation-related structures
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Civil engineering construction services, namely, soil and subsurface improvement, reinforcement, and stabilization for the support of buildings and other commercial, industrial, residential, and transportation-related structures
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Construction of civil engineering structures, namely, soil and subsurface improvement structures in the nature of densely compacted support columns for foundation support of buildings and other commercial, industrial, residential, and transportation-related structures
37 - Services de construction; extraction minière; installation et réparation
Produits et services
construction of civil engineering structures, namely, soil and subsurface improvement structures in the nature of densely compacted support columns for foundation support of buildings and other commercial, industrial, residential, and transportation-related structures
37 - Services de construction; extraction minière; installation et réparation
Produits et services
construction of civil engineering structures, namely, soil and subsurface improvement structures in the nature of densely compacted support columns for foundation support of buildings and other commercial, industrial, residential, and transportation-related structures
A primary earth penetrating mandrel formed of a hollow shell steel plate octagonal in cross-section has an upper end and a blunt lower end joined by an upwardly and outwardly tapered wall. The mandrel is driven down in the earth to simultaneously form a vertical tapered cavity while compacting the sidewall of the cavity to provide structural integrity. The mandrel is then moved upwardly from the bottom of the cavity and aggregate is deposited in the bottom of the cavity then the mandrel is lowered so that its blunt lower end densifies the aggregate by vertical vibratory action and static force and repeating these until the pier top is near the surface of the earth at which time the upper aggregate portions are densified by the primary mandrel or a secondary mandrel having a substantially larger lower end surface than the lower end surface of the primary mandrel.
Extensible shells and related methods for constructing a support pier are disclosed. A shell can define an interior for holding granular construction material and define an opening for receiving the granular construction material into the interior. The shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the shell to form a support pier.
Extensible shells and related methods for constructing a support pier are disclosed. A shell can define an interior for holding granular construction material and define an opening for receiving the granular construction material into the interior. The shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the shell to form a support pier.
A system for constructing a support column includes a mandrel with an upper portion and a tamper head. A feed tube extends through the mandrel for feeding flowable material to the head. The tamper head includes a lower enlarged chamber with a reducing surface at an upper portion for compacting material and restricting upward flow of aggregate. The tamper head is of a size providing an enclosed region for allowing cementitious materials to be placed therein. The system allows a support column including a cementitious inclusion on top of an expanded base to be built.
A system for constructing a support column includes a mandrel with an upper portion and a tamper head. A feed tube extends through the mandrel for feeding flowable material to the head. The tamper head includes a lower enlarged chamber with a reducing surface at an upper portion for compacting material and restricting upward flow of aggregate. The tamper head is of a size providing an enclosed region for allowing cementitious materials to be placed therein. The system allows a support column including a cementitious inclusion on top of an expanded base to be built.
A system and method of determining lift deflection during construction of aggregate columns allows for real time monitoring of construction to ensure meeting defined parameters. The amount of deflection of a tamper head during tamping is determined multiple times for each lift. When the amount of deflection matches a predetermined value, tamping is stopped.
A primary earth penetrating mandrel formed of a hollow shell steel plate octagonal in cross-section has an upper end and a blunt lower end joined by an upwardly and outwardly tapered wall. The mandrel is driven downwardly in the earth to simultaneously form a vertical tapered cavity while compacting the sidewall of the cavity to provide structural integrity. The mandrel is then moved upwardly from the bottom of the cavity and aggregate is deposited in the bottom of the cavity following which the mandrel is lowered so that its blunt lower end engages the deposited aggregate and densifies the aggregate by vertical vibratory action and static force with these steps being repeated until the pier top is near the surface of the earth at which time the upper aggregate portions are densified by either the primary mandrel or a secondary mandrel having a substantially larger lower end surface than the lower end surface of the primary mandrel. A second embodiment includes a conduit in the primary mandrel for injecting concrete or grout into aggregate previously deposited in the cavity.
