Abstract

A top-down construction type assembly construction method for paved road surface, including the following steps: step I, manufacturing prefabricating slabs: using a top-down method to manufacture the prefabricating slabs, and providing bolt sleeves, inside the prefabricating slabs, which are evenly arranged in the prefabricating slabs; step II, mounting the prefabricating slabs: on a lower bearing plate, placing the prefabricating slabs in one step, performing a fine tuning on a position and an altitude of the prefabricating slabs, performing a grouting construction, finally forming the paved road surface; the prefabricating slabs are manufactured by laying bricks and pouring concrete, the prefabricating slabs are rolled over and mounted, thus eliminating on-site concrete bonding between bricks and the lower bearing plate, improving overall stability of the bricks and the prefabricating slabs after being mounted, assembled mounting for a paved road surface is implemented, and the construction period is shortened.

IPC Classes  ?

• E01C 5/00 - Pavings made of prefabricated single units
• E01C 5/22 - Pavings made of prefabricated single units made of units composed of a mixture of materials covered by two or more of groups
• E01C 19/52 - Apparatus for laying individual preformed surface elements, e.g. kerbs
• B28B 23/00 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material

Abstract

An anchorage system for the horizontal rotation of a cable, and a construction method. The anchorage system comprises an anchorage structure, transfer cable saddles, a main cable saddle and diverting cable saddles, wherein a cable rotation channel is provided in the anchorage structure; and the main cable saddle is arranged at the central axis of the top of the cable rotation channel, and the diverting cable saddles are fixedly arranged at the top of the cable rotation channel and are symmetrically distributed along the main cable saddle. The main cable saddle comprises a first main cable saddle and a second main cable saddle, the first main cable saddle and the second main cable saddle being axially connected by means of a force transmission mechanism; each diverting cable saddle comprises a cable saddle body; and a cable comprises a first cable and a second cable, wherein the first main cable saddle is used for inverted-U-shaped rotation of the first cable at the top of the cable rotation channel, and the second main cable saddle and the diverting cable saddles are used for M-shaped rotation of the second cable at the top of the cable rotation channel. By means of these configurations, stress at the central axis of the top of the anchorage structure can be dispersed to two sides of the top of the anchorage structure, thus avoiding stress concentration of the anchorage structure.

IPC Classes  ?

• E01D 19/14 - TowersAnchorsSaddle supports
• E01D 19/16 - Suspension cablesCable clamps for suspension cables
• E01D 21/00 - Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

A top-down construction type assembly construction method for a paved road surface, the method comprising: step I, manufacturing a prefabricated slab: using a top-down construction method to manufacture the prefabricated slab, wherein vertically penetrating bolt sleeves are arranged in the prefabricated slab, and the bolt sleeves are evenly arranged in the prefabricated slab; and step II, mounting the prefabricated slab: on a clean lower bearing plate, placing the prefabricated slab in one step according to the mounting sequence of a mounting section, then finely adjusting the position and elevation of the prefabricated slab, performing grouting construction after the adjustment is completed, and finally forming a complete paved road surface. The prefabricated slab is manufactured by means of firstly laying bricks and then pouring concrete, and finally the prefabricated slab is rolled over and mounted, thus eliminating on-site concrete bonding between the bricks and the lower bearing plate, improving the overall stability of the bricks and the prefabricated slab after being mounted, and greatly reducing the separation of the bricks from a road during operation. Thus, assembled mounting for a paved road surface is implemented, the engineering cost is saved, and the construction period is shortened.

IPC Classes  ?

• E01C 5/06 - Pavings made of prefabricated single units made of units with cement or like binders
• E01C 5/00 - Pavings made of prefabricated single units
• E01C 9/00 - Special pavingsPavings for special parts of roads or airfields
• B28B 23/02 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material wherein the elements are reinforcing members

Abstract

A variable cross-section intelligent bridge making machine, which comprises a hanging beam, the hanging beam being arranged on the end face of an already placed section of a bridge; main beams, two main beams being detachably fixed to ends of C-shaped components, one end of each main beam extending to the placed section, and the other end extending out of an end face of the placed section; an outer mold, the outer mold being arranged at parts of the main beams extending out of the end face of the placed section, and an inner mold is correspondingly arranged in the outer mold; two guide rails, the two guide rails being correspondingly arranged at two sides of the bridge deck, and supporting bases slidably assembled in the guide rails are arranged at the two respective ends of the hanging beam; and counter-force mechanisms, the counter-force mechanisms being correspondingly arranged at the ends of the main beams extending out from the placed section. The variable cross-section intelligent bridge-building machine is arranged on the already placed section of the bridge, and said bridge-building machine is fully supported by means of the hanging beam and the main beams; upon being driven by external force, the hanging beam can slide along the guide rails, thereby implementing automatic movement.

IPC Classes  ?

• E01D 21/00 - Methods or apparatus specially adapted for erecting or assembling bridges
• E01D 21/10 - Cantilevered erection
• E01D 101/24 - Concrete

Abstract

Provided in the present invention is a construction method for an upper surface course made of a steel slag-asphalt mixture. The construction method comprises the following steps: preparation of construction materials, acceptance of a middle surface course, construction of a binding course, mixing of a steel-asphalt mixture, transportation of a steel slag-asphalt mixture, paving of the steel slag-asphalt mixture, rolling of the steel slag-asphalt mixture, arrangement and treatment of construction joints, and inspection and acceptance, wherein the rolling of the steel slag-asphalt mixture comprises preliminary rolling, re-rolling and final rolling, the rolling speeds of preliminary rolling and re-rolling are 4-5 km/h, and the rolling speed of final rolling is 2-3 km/h. The construction method of the present invention has the characteristics of a simple construction process and high construction efficiency; moreover, the binding power and shear strength of the steel slag-asphalt mixture used in the upper surface course and the aging resistance, wear resistance, etc. of an asphalt pavement are improved to a certain extent compared with those of a common gravel mixture, such that the service level of a road can be effectively improved.

IPC Classes  ?

• E01C 7/18 - Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders

Abstract

A construction method for a steel-concrete main girder of a cable-stayed bridge. The steel-concrete main girder is constructed in a multi-segmental manner. The construction method comprises the following steps: step 1, carrying out cast-in-place construction on a segment of concrete side main girder (1) on a main tower (100) and steel-concrete main girders on two sides of the main tower (100) by using a bracket (4); step 2, constructing the remaining midspan cantilever segments of steel-concrete main girders by using a front-pivot guyed form traveler (3); assembling a cantilever form traveler on the steel-concrete main girder, binding a steel bar, hoisting a steel cross beam (2), pouring concrete, applying a tensile prestress after the strength thereof reaches design requirements, and hoisting a bridge deck panel; step 3, moving the cantilever form traveler forward to the next segment, and repeating the construction process in step 2 to construct the next segment; step 4, constructing a side-span cast-in-place segment, using a floor support to construct the side-span cast-in-place segment, wherein the support uses a support scheme of a pile foundation and a Bailey beam; step 5, joining the side span; and step 6, joining the midspan. The construction method can ensure that the steel-concrete main girder has sufficient integrity and robustness, and can save construction time.

IPC Classes  ?

• E01D 21/00 - Methods or apparatus specially adapted for erecting or assembling bridges
• E01D 21/06 - Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
• E01D 21/10 - Cantilevered erection

Abstract

A descending type double-span movable scaffolding system and a construction method. The scaffolding system comprises main beams (1), main nose beams (2), corbels (3), propelling flatcars (4), cross beams (5), an outer formwork (6), a front hanging beam (7), and a rear hanging beam (8), the number of the main beams (1) is two, the main beams (1) are connected by means of a plurality of pairs of cross beams (5), every two cross beams (5) form a group, and the bottom ends of the cross beams are connected by means of bolts; the main nose beams (2) are fixedly connected to the two ends of each main beam (1), the three pairs of corbels (3) are respectively located at the bottom of each main beam (1) and the bottoms of the main nose beams (2) at the two ends of each main beam (1) and used for supporting the main beams (1) and the main nose beams (2), each pair of corbels (3) are connected by means of a connecting plate, and each propelling flatcar (4) is slidably connected to the tops of the corbels (3). According to the scaffolding system, through the arrangement of an attached connecting device (9), after a hydraulic device on each propelling flatcar (4) enables two parts of the outer formwork (6) to be closed, the two beams (5) in the same pair can be fixed at the same time, the top of the attached connecting device (9) is embedded into the connecting position of the outer formwork (6), and a gap at the connecting position cannot be vertically through, such that the situation of continuous leakage is prevented, and the safety is improved.

IPC Classes  ?

• E01D 21/00 - Methods or apparatus specially adapted for erecting or assembling bridges
• E01D 2/04 - Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type

Abstract

A paving and mounting structure for ultra-low adhesion coefficient road glass bricks of a vehicle proving field, comprising a grid-shaped mounting frame (1), and glass bricks (2) embedded and mounted into mesh holes of the mounting frame (1); the mounting frame (1) consists of a plurality of transvers beams (11), a plurality of longitudinal beams (12), and a plurality of cross-shaped fastening rubber pads (13), the transverse beams (11) and the longitudinal beams (12) being vertically arranged steel bar structures; upper insertion notches (14) on the transverse beams (11) and the corresponding lower insertion notches (14') on the longitudinal beams (12) are mutually engaged and fixed to form a grid-shaped structure; each cross-shaped fastening rubber pad (13) is snap-fitted on each cross-shaped intersection of the grid-shaped structure by means of a cross-shaped positioning and mounting notch (133) to form the stable mounting frame (1); and the glass bricks (2) have bottom surfaces supported in the mounting frame (1) and side surfaces snap-fitted with the cross-shaped fastening rubber pads (13) of the mounting frame (1), thereby forming an embedded fixing structure. The paving and mounting structure can form a stable integral road, and has low construction and maintenance costs.

IPC Classes  ?

• E01C 9/00 - Special pavingsPavings for special parts of roads or airfields
• E01C 5/00 - Pavings made of prefabricated single units
• E01C 5/04 - Pavings made of prefabricated single units made of bricks

Abstract

An installation method for a prefabricated capping beam of a viaduct, the installation method comprising the following steps: S1. sticking observation labels, involving sticking the observation labels to the end of a prefabricated capping beam, the central point of a side surface of the prefabricated capping beam and the central point of an upright post; S2. pre-assembling, involving hoisting the prefabricated capping beam to the upper end of the upright post, observing the observation labels to adjust the position of the prefabricated capping beam on the upright post, and marking the position of the prefabricated capping beam after adjusting to a desired position; and S3. performing formal assembly, involving hoisting the marked prefabricated capping beam, grouting from the top of the upright post, hoisting the capping beam to the top of the upright post after grouting, correcting according to the observation labels and the marks, and then performing formal assembly of the prefabricated capping beam to the upright post. According to the method, multiple observation labels are provided on the prefabricated capping beam and the upright post, both pre-assembly and formal assembly are performed for the prefabricated capping beam, and during the assembly process, the pre-positioning and re-checking of the verticality, flatness and elevation of the capping beam are performed by means of observing the marks, thereby greatly improving the assembly precision.

IPC Classes  ?

• E01D 21/00 - Methods or apparatus specially adapted for erecting or assembling bridges
• E01D 19/00 - Details of bridges

Abstract

A pavement flatness measurement method and system. The measurement method comprises: acquiring three-dimensional point cloud data of a pavement; performing reverse modeling by using the point cloud data to obtain a pavement entity model; building an eight-wheel flatness measuring instrument model in equal proportion, and constraining the connection relationship of all parts; enabling the eight-wheel flatness measuring instrument model to move on a specified characteristic line of the pavement entity model by using a motion simulation technology, to obtain a pavement irregularity deviation value of each pavement measurement interval; and calculating the flatness value of the pavement according to the pavement irregularity deviation value. The system comprises an acquisition module (10), a pavement entity model building module (20), a flatness measuring instrument model building module (30), a pavement irregularity deviation value calculation module (40), and a flatness calculation module (50). The measurement method and system can be applied to curved pavements and large-slope pavements, and has strong feasibility and practicability.

IPC Classes  ?

• E01C 23/01 - Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed supportsApplications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs