Independent precast anti-collision wall structure on a structural slab and installation method

Abstract

The present invention discloses an independent precast anti-collision wall structure on a structural slab and an installation method, which includes a plurality of precast anti-collision wall segments; each precast anti-collision wall segment is fixed through the connection between a foot boot and a pre-embedded groove arranged at a corresponding position on the structural slab; at the bottom of each foot boot, and on the side surface facing the road, pre-embedded steel plates are provided, and the bottoms are all inclined; each pre-embedded groove is an integral groove and is fixed to the structural slab through first anchor bars; a rubber pad is provided between every two adjacent precast anti-collision wall segments; at the joint formed after splicing every two adjacent precast anti-collision wall segments, the part located outside the corresponding rubber pad is coated with polysulfide sealant for sealing. During installation, by applying pressure to the top of each precast anti-collision wall segment, the foot boot is inserted into the pre-embedded groove; then, the gap between every two precast anti-collision wall segments is adjusted by adjusting the thickness of the rubber pad. The present invention can not only accurately install the anti-collision wall, but also optimize the wet operation and improve the construction operation environment.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-collision wall construction, and particularly to an independent precast anti-collision wall structure on a structural slab and an installation method thereof. Background Art

[0002] In the construction of anti-collision walls on existing structural slabs such as elevated bridges and tunnels according to design requirements, the precast anti-collision walls of bridges can be precast integrally with reinforced concrete beams, or can be precast independently and then connected to the bridges. Integral precasting often increases the hoisting quality of the bridge and brings inconvenience to installation.

[0003] In the prior art, the connection of independently precast anti-collision walls usually adopts the grouting sleeve method, which requires high connection precision, and there is often a situation where installation cannot be carried out in place due to the embedding error of the sleeve.

[0004] Especially in tunnel projects, the anti-collision wall is usually cast-in-place later, and there are also precast and assembled anti-collision walls, which usually also adopt grouting sleeve connections, and there is also a situation where installation cannot be carried out in place due to the embedding error of the sleeve.

[0005] In addition, the grouting sleeve connection still has a certain amount of wet work, and the transportation of bulk materials and the mixing of mortar affect the construction environment.

[0006] Therefore, how to widely apply precast technology to anti-collision walls of bridges and tunnels, on the basis of ensuring reliable connection, not only can the anti-collision be accurately installed, but also the wet work can be optimized and the construction operation environment can be improved has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0007] In view of the above-mentioned defects of the prior art, the present invention provides an independent precast anti-collision wall structure on a structural slab and an installation method thereof, and the achieved purpose is to accurately install the anti-collision on the basis of ensuring reliable connection, and at the same time optimize the wet work and improve the construction operation environment.

[0008] To achieve the above purpose, the present invention discloses an independent precast anti-collision wall structure on a structural slab, including a plurality of anti-collision wall precast segments sequentially connected on the structural slab.

[0009] Wherein, a plurality of foot boots are provided under each of the anti-collision wall precast segments, and the fixation is realized through the connection between each foot boot and the embedded groove arranged at the corresponding position on the structural slab;

[0010] Embedded steel plates are provided at the bottom of each foot boot and on the side surface facing the road;

[0011] The bottom of each embedded groove is inclined, and the height on the side facing the road is lower than the height on the side facing away from the road;

[0012] Each of the embedded grooves is an integral groove made of metal material, and the side walls are provided with first anchor bars extending in all directions, and are fixed to the structural plate through the first anchor bars;

[0013] A rubber pad is provided between every two adjacent prefabricated sections of the anti-collision wall;

[0014] The outer dimensions of each of the rubber pads are smaller than the end surface of the corresponding prefabricated segment of the anti-collision wall;

[0015] At the joints formed after every two adjacent prefabricated segments of the crash barrier are spliced, the portions located outside the corresponding rubber pads are coated with polysulfide sealant for sealing.

[0016] Preferably, each of the embedded steel plates is provided with a second anchor bar on one side facing the corresponding foot boot, and is fixed to the corresponding foot boot via the second anchor bar.

[0017] Preferably, each of the embedded grooves is made of a plurality of steel plates through welding.

[0018] Preferably, each of the prefabricated segments of the anti-collision wall includes four of the foot boots, and four of the embedded grooves are correspondingly provided at corresponding positions on the structural plate.

[0019] Preferably, the plane size of each embedded groove is 10 mm ± 10% larger than that of the corresponding foot boot.

[0020] Preferably, each of the rubber pads is a neoprene rubber pad.

[0021] Preferably, the length of each prefabricated segment of the crash barrier is 4 meters, and the ridges of the side corresponding to the trapezoidal cross-section are provided with 5*5mm chamfers; the distance between every two adjacent foot boots is 1 meter.

[0022] The present invention also provides an installation method for an independent prefabricated crash barrier structure on a structural plate, wherein each prefabricated crash barrier segment is lifted into place in turn by a forklift at a position where a corresponding embedded groove is provided on the structural plate; then, the corresponding foot boot is inserted into the corresponding embedded groove by applying pressure on the top of each prefabricated crash barrier segment; and the gap between each two adjacent prefabricated crash barrier segments is adjusted by adjusting the thickness of each rubber pad.

[0023] Preferably, after all the prefabricated segments of the crash barrier are positioned on the structural plate, other ancillary works such as the paving layer are constructed.

[0024] Beneficial effects of the present invention:

[0025] Compared with the prior art, the present invention provides an integral embedded groove and a foot boot connection structure that can not only enable the crash barrier to be accurately installed, but also optimize wet operations and improve the construction environment.

[0026] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the side structure of a prefabricated segment of a crash wall in one embodiment of the present invention is shown.

[0028] Figure 2 A schematic structural diagram of a rubber pad in an embodiment of the present invention is shown.

[0029] Figure 3 A schematic cross-sectional structure diagram showing a foot boot inserted into a corresponding embedded groove in an embodiment of the present invention.

[0030] Figure 4 A schematic structural diagram of a joint seam formed after every two adjacent prefabricated anti-collision wall segments are spliced ​​in one embodiment of the present invention is shown.

[0031] Figure 5 A schematic diagram of the longitudinal cross-sectional structure of a structural plate provided with four embedded grooves in one embodiment of the present invention is shown.

[0032] Figure 6 A plan view showing a structural plate having four embedded grooves in one embodiment of the present invention.

[0033] Figure 7 A schematic diagram showing the structure of a prefabricated anti-collision wall segment with a foot boot at the bottom in one embodiment of the present invention.

[0034] Figure 8 A schematic diagram of the three-dimensional structure of two prefabricated anti-collision wall segments in one embodiment of the present invention is shown. DETAILED DESCRIPTION

[0035] Example

[0036] like Figures 1 to 8 As shown, the independent prefabricated crash wall structure on the structural plate comprises a plurality of prefabricated crash wall segments 2 which are arranged on the structural plate 1 and connected in sequence.

[0037] Wherein, a plurality of foot boots 3 are arranged under each prefabricated segment 2 of the anti-collision wall, and the fixing is achieved by connecting each foot boot 3 with the embedded groove 4 arranged at the corresponding position on the structural plate 1;

[0038] The bottom of each boot 3 and the side facing the road are provided with embedded steel plates 5;

[0039] The bottom of each embedded groove 4 is inclined, and the height of the side facing the road is lower than the height of the side facing away from the road;

[0040] Each embedded slot 4 is an integral slot made of metal material, and the side walls are provided with first anchor bars 6 extending in all directions, and are fixed to the structural plate 1 through the first anchor bars 6;

[0041] A rubber pad 7 is provided between every two adjacent prefabricated anti-collision wall segments 2;

[0042] The outer dimensions of each rubber pad 7 are smaller than the end surface of the corresponding prefabricated anti-collision wall segment 2;

[0043] At the joints formed after every two adjacent prefabricated anti-collision wall segments 2 are spliced, the portions located outside the corresponding rubber pads 7 are coated with polysulfide sealant 8 for sealing.

[0044] The present invention adopts a prefabricated assembly process, and the angled foot boots 3 are adaptively stable. When subjected to an impact, the anti-collision wall can be prevented from tipping over. The embedded grooves 4 are integral grooves, corresponding to the foot boots 3 of each prefabricated segment 2 of the anti-collision wall. The foot boots 3 are not difficult to install, and the errors caused by the poor positioning of the embedded grooves 4 can also be eliminated by the rubber pads 7. Compared with the prior art, the cast-in-place maintenance time can be reduced, the construction environment is optimized, and it is safer and more reliable.

[0045] In some embodiments, a second anchor bar is provided on one side of each embedded steel plate 5 facing the corresponding foot boot 3 , and the embedded steel plate 5 is fixed to the corresponding foot boot 3 via the second anchor bar.

[0046] In some embodiments, each embedded slot 4 is made of a plurality of steel plates welded together.

[0047] In some embodiments, each prefabricated anti-collision wall segment 2 includes four foot boots 3 , and four embedded grooves 4 are correspondingly provided at corresponding positions on the structural plate 1 .

[0048] In some embodiments, the plane size of each embedded groove 4 is 10 mm±10% larger than that of the corresponding foot boot 3 .

[0049] In practical applications, the size of the embedded groove 4 is slightly larger than the corresponding foot boot 3 by 10 mm, which can be used to adjust the installation error.

[0050] In some embodiments, each rubber pad 7 is a neoprene rubber pad.

[0051] In some embodiments, the length of each prefabricated segment 2 of the crash barrier is 4 meters, and the ridgeline position of the side corresponding to the trapezoidal cross section is provided with a 5*5mm chamfer 9; the distance between every two adjacent foot boots 3 is 1 meter.

[0052] In practical applications, the chamfer setting can prevent blocks from falling off during transportation and installation.

[0053] The present invention also provides an installation method for the freestanding precast anti-collision wall structure on the structural slab. At the positions where the corresponding embedded grooves 4 are provided on the structural slab 1, each anti-collision wall precast segment 2 is successively lifted into place by a forklift; then, by applying pressure to the top of each anti-collision wall precast segment 2, the corresponding foot boots 3 are inserted into the corresponding embedded grooves 4; and then, the thickness of each rubber pad 7 is adjusted to adjust the gap between every two adjacent anti-collision wall precast segments 2.

[0054] In some embodiments, after all the anti-collision wall precast segments 2 are positioned on the structural slab 1, other ancillary works such as the paving layer 10 are constructed.

[0055] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. The independent precast anti-collision wall structure on the structural slab, comprising a plurality of anti-collision wall precast segments (2) sequentially connected on the structural slab (1); It is characterized in that: A plurality of foot boots (3) are provided under each of the anti-collision wall precast segments (2), and the fixation is achieved through the connection between each of the foot boots (3) and the embedded groove (4) arranged at the corresponding position on the structural slab (1); Embedded steel plates (5) are provided at the bottom of each of the foot boots (3) and on the side surface facing the road; The bottom of each of the embedded grooves (4) is inclined, and the height on the side facing the road is lower than the height on the side facing away from the road; Each of the embedded grooves (4) is an integral groove made of metal material, and first anchor bars (6) extending around are provided on the side walls, and are fixed to the structural slab (1) through the first anchor bars (6); A rubber pad (7) is provided between every two adjacent anti-collision wall precast segments (2); The external dimension of each of the rubber pads (7) is smaller than the end face of the corresponding anti-collision wall precast segment (2); At the joint formed after splicing every two adjacent anti-collision wall precast segments (2), the part located outside the corresponding rubber pad (7) is coated with polysulfide sealant (8) for sealing; Second anchor bars are provided on the surface of each of the embedded steel plates (5) facing the corresponding foot boot (3), and are fixed to the corresponding foot boot (3) through the second anchor bars; Each of the embedded grooves (4) is made by welding a plurality of steel plates; Each of the anti-collision wall precast segments (2) includes four of the foot boots (3), and four of the embedded grooves (4) are correspondingly arranged at the corresponding positions on the structural slab (1); The planar dimension of each of the embedded grooves (4) is 10 mm ± 10% larger than the corresponding foot boot (3); Each of the rubber pads (7) is a chloroprene rubber pad; The length of each of the anti-collision wall precast segments (2) is 4 meters, and chamfers (9) of 5*5 mm are provided at the positions of the ridge lines of the trapezoidal cross-section on the side; the distance between every two adjacent foot boots (3) is 1 meter.

2. The installation method of the independent precast anti-collision wall structure on the structural slab according to claim 1, It is characterized in that, At the positions where the corresponding embedded grooves (4) are provided on the structural slab (1), each of the anti-collision wall precast segments (2) is lifted into place by a forklift in sequence; then, by applying pressure to the top of each of the anti-collision wall precast segments (2), the corresponding foot boots (3) are inserted into the corresponding embedded grooves (4); and then the gaps between every two adjacent anti-collision wall precast segments (2) are adjusted by adjusting the thickness of each of the rubber pads (7).

3. The installation method of the independent precast anti-collision wall structure on the structural slab according to claim 2, It is characterized in that, After all the anti-collision wall precast segments (2) are positioned on the structural slab (1), other auxiliary projects of the paving layer (10) are constructed.

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