Abrégé

The present invention relates to a ground improvement method for an organic soil stratum, in which organic soil inside a first drilled hole formed in an organic soil stratum located at the upper portion of the ground is removed, and then a point foundation, which includes a tail section formed in a lower silt stratum and a head section having an expanded diameter in an upper portion of the organic soil stratum, is constructed, thus making it possible to achieve sufficient consolidation strength in the point foundation and sufficient bearing capacity in the head section, and allowing the amount of settlement to be controlled by the tail section. The ground improvement method for an organic soil stratum of the present invention is for improving poor ground in which the organic soil stratum is formed above a lower silt stratum, the method being characterized by comprising: (a) a step for drilling the organic soil stratum to form a first drilled hole, and discharging to the outside and removing a portion of the organic soil stratum inside the first drilled hole; and (b) a step for injecting a solidification agent into a second drilled hole, which is formed by drilling a portion below the first drilled hole, and mixing the solidification agent with silt to form a tail section, and injecting a solidification agent into a third drilled hole, which is formed by drilling and enlarging part of an upper portion of the first drilled hole and has a larger diameter than the second drilled hole, and mixing the solidification agent with silt to form a head section.

Classes IPC  ?

• E02D 3/12 - Consolidation par mise en place dans le sol de produits solidifiants ou obturant les pores

Abrégé

The present invention relates to a concrete pile structure using a modular pile, and a modular pile manufacturing apparatus and method, which form the modular pile only with a concrete pile main body not having separate shoes or caps attached to both ends thereof, so as to form one standard of the modular piles for manufacturing a PHC pile and the like, such that manufacturing has good efficiency with respect to the supply and management of materials, and thus feasibility can be greatly improved. A concrete pile structure using a modular pile of the present invention is formed by coupling a plurality of modular piles in a longitudinal direction, and the modular pile comprises: a concrete pile main body having a hollow portion formed in the center thereof and having exposed upper and lower ends; a plurality of PC nuts respectively buried at both ends of the concrete pile main body; and a PC steel bar of which both end portions are respectively coupled and fixed to the PC nuts.

Classes IPC  ?

• E02D 5/52 - Pieux constitués d'éléments séparables, p.ex. de tubes télescopiques
• E02D 5/30 - Pieux préfabriqués en béton ou béton armé ou en acier et béton
• B28B 23/04 - Aménagements spécialement adaptés à la fabrication d'objets façonnés avec des éléments complètement ou partiellement enrobés dans le matériau de moulage dans lesquels les éléments enrobés sont des renforcements les éléments enrobés étant sous tension
• B28B 23/20 - Aménagements spécialement adaptés à la fabrication d'objets façonnés avec des éléments complètement ou partiellement enrobés dans le matériau de moulage dans lesquels les éléments enrobés sont des renforcements le façonnage étant effectué par moulage centrifuge ou rotatif
• E02D 5/58 - Pieux en béton précontraint

Abrégé

A hybrid foundation structure includes a first perforation hole formed in the ground, at least one second perforation hole formed adjacent to the first perforation hole on a side surface of the first perforation hole, and a first pile and a second pile formed by mixing and injecting soil and soil solidifying agent into the first perforation hole and the second perforation hole.

Classes IPC  ?

• E02D 3/12 - Consolidation par mise en place dans le sol de produits solidifiants ou obturant les pores
• 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
• E02D 5/48 - Pieux de structure variable le long de leur longueur
• E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p.ex. de pieux de compactage
• E02D 27/16 - Fondations formées de pieux séparés
• E02D 17/02 - Trous de fondation
• E02D 27/32 - Fondations pour des buts particuliers
• E02D 5/28 - Pieux préfabriqués en acier
• E02D 5/30 - Pieux préfabriqués en béton ou béton armé ou en acier et béton
• E02D 5/36 - Pieux en béton ou analogue coulés en place sans utilisation de tubages ou autres coffrages

Abrégé

The present invention relates to an assembly-type joint for connecting piles and, more particularly, to a joint for connecting concrete piles, the joint comprising: a plate-shaped upper plate coupled to one end of a concrete pile, a first coupling hole being bored in the upper plate so as to correspond to a hole formed in the concrete pile; a plate-shaped lower plate coupled to one end of another concrete pile, a second coupling hole being bored in the lower plate so as to correspond to a hole formed in the other concrete pile; and a hexahedron-shaped support member with open upper and lower surfaces, a third coupling hole being bored in one side surface of the support member so as to correspond to the first coupling hole, the one side surface being coupled to the lower surface of the upper plate such that the first coupling hole and the third coupling hole are on a straight line, a fourth coupling hole being bored in the other side surface of the support member so as to correspond to the second coupling hole, the other side surface being coupled to the upper surface of the lower plate such that the second coupling hole and the fourth coupling hole are on a straight line, wherein the upper plate, the lower plate, and the support member constitute a module, multiple modules are assembled so as to conform to the shape of one end of the concrete piles to be connected, and the two concrete piles are thereby connected to each other. According to the present invention, piles can be easily connected on site using the connecting joint. Particularly, the present invention makes it possible to directly couple a pile to the connecting joint without an additional process, such as welding, thereby reducing the foundation installation period and the installation cost.

Classes IPC  ?

• E02D 5/52 - Pieux constitués d'éléments séparables, p.ex. de tubes télescopiques
• E02D 5/30 - Pieux préfabriqués en béton ou béton armé ou en acier et béton

Abrégé

The present invention relates to a screw pile for ground reinforcement having a front end expanding reinforcement plate coupled thereto and, more particularly, to a pile for ground reinforcement capable of excavating the ground, comprising: a rod-shaped body having a through-hole formed therein so as to serve as a passage of air and a grouting liquid; a screw wing formed in a helical shape along the outer peripheral surface of the body and installed integrally on the body; multiple grouting holes bored on the outer peripheral surface of the body such that a grouting liquid can be sprayed; a front end expanding reinforcement plate having the shape of a circular plate, one end of the body being coupled to the upper surface thereof, an air discharge hole being bored to penetrate the upper and lower surfaces of the front end expanding reinforcement plate such that the same lies on a straight line together with the through-hole; and an excavation bit having one end coupled to one side of the lower surface of the front end expanding reinforcement plate, a cutting blade being formed on the other end thereof, wherein the excavation bit (500) and the screw wing rotate and perforate the ground, and the front end expanding reinforcement plate is then seated on the bottom surface of the bored hole and grouts the same, thereby increasing the front end support force.

Classes IPC  ?

• E02D 5/56 - Pieux à vis
• E02D 5/62 - Tassement du sol à la base ou d'un matériau analogue à travers des tubes

Abrégé

The present invention relates to a screw pile for reinforcing the ground, and in particular, a pile for reinforcing the ground which can dig the ground. The screw pile includes: a bar-shaped body with a pile hole that is a passage of air and grouting solution; a screw that is formed spirally and integrally around the body; one or more grouting holes formed around the body so that grouting solution can be sprayed; a tip expanding-reinforcing plate that has a plate shape, is coupled to one end of the body on its top, and has an air discharge hole formed through the top and the bottom in the same line as the pile hole; and a excavation bit that has one end coupled to a side of the bottom of the tip expanding-reinforcing plate and the other end with a blade, in which when the bit 500 and the screw form a hole in the ground by rotation, the tip expanding-reinforcing plate moves to the bottom of the hole and performs grounding, increasing a tip support force.

Classes IPC  ?

• E02D 5/56 - Pieux à vis
• B23K 31/02 - Procédés relevant de la présente sous-classe, spécialement adaptés à des objets ou des buts particuliers, mais non couverts par un seul des groupes principaux relatifs au brasage ou au soudage
• E02D 13/02 - Accessoires pour la mise en place ou l'enlèvement de pieux ou de rideaux de palplanches spécialement adaptés à la mise en place ou à l'enlèvement des rideaux de palplanches
• E02D 7/22 - Mise en place par vissage
• B23K 101/08 - Tubes à ailettes ou à nervures
• B23K 101/20 - Outils

Abrégé

The present invention relates to a repair and reinforcement material and a repair and reinforcement method using the same which can adhere a repair and reinforcement material of a geotextile solidification mat to a portion to be repaired and reinforced of a concrete structure and increase an adhesion force and constructability while maintaining physical and mechanical characteristics of the repair and reinforcement material of a composition through a spray method, whereby the concrete structure and the repair and reinforcement material are integrated with each other so that adhesion performance is stably ensured, resulting in the enhancement of durability, and constructability for integrating the concrete structure and the repair and reinforcement material can be simplified, thereby reducing working time.

Classes IPC  ?

• C04B 14/06 - Quartz; Sable
• C04B 28/14 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p.ex. contenant des ciments de polycarboxylates contenant des ciments de sulfate de calcium
• C04B 26/02 - Composés macromoléculaires

Abrégé

The present invention relates to a foundation structure vertically installed on the ground, and comprising: an upper support layer 10 formed on the ground in the vertical direction; and a lower support layer 20 formed so as to extend downward from the upper support layer 10 and such that the width thereof is less than that of the upper support layer 10. The disclosed upper support layer 10 and the lower support layer 20 are structures formed from soil solidified by means of feeding and mixing an earth and soil-solidifying agent therein, and therefore are efficient and prevent overload due to boring equipment.

Classes IPC  ?

• E02D 3/12 - Consolidation par mise en place dans le sol de produits solidifiants ou obturant les pores
• 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
• E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p.ex. de pieux de compactage
• E02D 17/02 - Trous de fondation
• E02D 27/16 - Fondations formées de pieux séparés
• E02D 27/32 - Fondations pour des buts particuliers
• E02D 5/48 - Pieux de structure variable le long de leur longueur

Abrégé

The present invention relates to a method capable of simply calculating the physical properties and bearing capacity of ground by converting a tapered section pile to an equivalent round columnar pile. The method of converting the physical properties of ground in which a tapered section pile (configured with a head unit (10), a cone unit (20), and a tail unit (30)) is installed according to the present invention is technically characterized by comprising: (S10) an equivalent pile converting step of dividing the tapered section pile into a plurality of sections along a lengthwise direction thereof, and converting the sections to a plurality of combined round columnar piles or one round columnar pile; and (S20) a physical property converting step of calculating the physical properties (converted in the equivalent pile converting step (S10)) of ground in which the one or more round columnar piles is (are) installed. The method of converting the physical properties of ground in which a tapered section pile is installed and the bearing capacity calculating method using same according to the present invention convert a tapered section pile into a columnar pile of a simple shape to calculate the physical properties and bearing capacity of ground, so as to simplify a complex calculation.

Classes IPC  ?

• E02D 5/48 - Pieux de structure variable le long de leur longueur
• E02D 27/14 - Ensembles de pieux
• E02D 33/00 - Test des fondations

Abrégé

The present invention relates to an end part reinforcing pile and to a method for manufacturing a reinforcing plate thereof. The present invention includes: a pile (110); and a reinforcing plate (120) attached to a cross-sectional part of the pile (110) and forming a circular strip shape with multiple arc-shaped strip plates (120a) so as to be adjacently arranged. Accordingly, the loss of manufactured plates can be reduced so that the end part reinforcing pile can be manufactured in an economical manner.

Classes IPC  ?

• E02D 5/24 - Pieux préfabriqués
• E02D 5/30 - Pieux préfabriqués en béton ou béton armé ou en acier et béton

Abrégé

This invention relates to a pile whereof the head is expandable, wherein a leading end expansion plate having a larger size than the cross section of the pile leading end is installed at the leading end of the pile to improve the leading end bearing force of a hollow pile. More specifically, the invention relates to a pile whereof the head is expandable, wherein the inner hole has an optimal size which is smaller than the cavity of the pile and formed on the surface of a leading end expansion plate. The disclosed pile, whereof the head is expandable and which has a leading end expansion plate including a critical inner hole, is a pile where the leading end expansion plate has a larger size than the cross section diameter of the pile leading end to improve the leading end bearing force of a hollow pile. The leading end expansion plate is shaped like a circular band, wherein a hole smaller than a cavity of pile is formed. Especially, the width (tplate) of the leading end expansion plate is below the range of 40~70% as compared with the radius (Do) of leading end expansion plate.

Classes IPC  ?

• 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