CN-118148012-B - Bridge seamless expansion joint chute device

CN118148012BCN 118148012 BCN118148012 BCN 118148012BCN-118148012-B

Abstract

The invention relates to the technical field of bridges, and particularly discloses a bridge seamless expansion joint sliding chute device which comprises a chute base, a spring assembly, a chute cushion block, an anchoring sliding support and an embedded steel plate. The upper surface of the strip-shaped chute base is provided with a strip-shaped arc-shaped groove. The spring assembly is a strip-shaped arc structure formed by sequentially connecting a plurality of sections of arc springs in parallel end to end, and the strip-shaped arc structure is placed in the arc groove along the length direction of the arc groove. The two chute cushion blocks are symmetrically arranged on two sides of the spring assembly. The upper end of the chute cushion block is abutted against the lower surface of the stop block in the upper end opening of the arc-shaped chute. The lower end of the anchor slide is provided with a ball which is supported on the spring assembly. The upper end of the anchoring sliding support is connected with the embedded steel plate. The bridge seamless expansion joint sliding chute device can well limit the vertical displacement of the elastic expansion body in the seamless expansion joint, prevent the expansion of the elastic expansion body from being higher than the road surface, and is easy to maintain in the later period.

Inventors

XIE LEI
LIU JINCHENG
JING GUOJIAN
Han Lebing
NIU TENG
XU XINGWEI
XU CHUANCHANG
WANG YANGCHUN
LIU SONG
WANG YUKUI
MEI YANKUN
LI WEN
ZHOU XIMAO

Assignees

山东高速工程检测有限公司

Dates

Publication Date: 20260505
Application Date: 20240422
Priority Date: 20240402

Claims (10)

1. A bridge seamless expansion joint chute device, comprising: The upper surface of the strip-shaped chute base is provided with a strip-shaped arc-shaped groove, and the inner side of an opening at the upper end of the arc-shaped groove is provided with a protruding stop block; The spring assembly is a strip-shaped arc-shaped structure formed by sequentially connecting the ends of a plurality of arc springs arranged in parallel, and the spring assembly is placed on the inner bottom surface of the arc-shaped groove along the length direction of the arc-shaped groove; The sliding groove cushion blocks are strip-shaped arc plates, the two sliding groove cushion blocks are symmetrically arranged on two sides of the spring assembly, the outer side wall of each sliding groove cushion block is attached to the inner side wall of each arc groove, and the lower end face of each sliding groove cushion block is abutted to the side wall of the spring assembly; The lower end of the anchoring sliding support is provided with a ball which is restrained between the two chute cushion blocks and is supported on the spring assembly, and the embedded steel plate is perpendicular to the chute base to form a cross shape, and the upper end of the anchoring sliding support penetrates through the upper end opening of the arc-shaped groove and then is connected with the embedded steel plate which is horizontally arranged.
2. The bridge seamless expansion joint runner apparatus according to claim 1, wherein said arcuate slot extends through the end faces of the runner base.
3. The bridge seamless expansion joint sliding chute device according to claim 1, wherein the upper part of the outer side wall of the sliding chute cushion block is provided with an inward boss which is abutted against the lower surface of the stop block, and the upper end of the sliding chute cushion block is flush with the upper port of the arc-shaped groove.
4. The bridge seamless expansion joint chute device according to claim 1, wherein said pre-buried steel plate is attached to the upper surface of the chute base.
5. The bridge seamless expansion joint sliding chute device according to claim 4, wherein the upper surface of the embedded steel plate is fixedly provided with an elastic telescopic body, or the upper end of the anchoring sliding support penetrates through the embedded steel plate and is fixedly connected with the bottom surface of the elastic telescopic body.
6. The bridge seamless expansion joint sliding chute device according to claim 5, wherein the upper end of the anchoring slip bracket is connected with the nut after passing through the elastic telescopic body, the elastic telescopic body is fastened and connected on the embedded steel plate, and a groove is formed on the upper surface of the elastic telescopic body for accommodating the nut.
7. The bridge seamless expansion joint sliding chute device according to claim 5, wherein each pre-buried steel plate is at least connected with two anchoring sliding brackets at intervals, each anchoring sliding bracket corresponds to one sliding chute base, and the sliding chute bases are parallel to each other.
8. The bridge seamless expansion joint sliding chute device according to claim 7, wherein a plurality of embedded steel plates are arranged in each sliding chute base, and each embedded steel plate corresponds to one anchoring sliding bracket.
9. The bridge seamless expansion joint sliding chute device according to claim 8, wherein the anchoring sliding support comprises a long cylindrical body and a plurality of rod bodies, the rod bodies are vertically fixed on the outer side wall of the cylindrical body in a state of being distributed at intervals, the cylindrical body is horizontally arranged between two sliding chute cushion blocks in the arc-shaped groove, the outer side wall of the cylindrical body is attached to the inner side wall of the sliding chute cushion blocks, the upper part of the arc-shaped groove forms constraint on the cylindrical body, the cylindrical body is supported on the spring assembly, and the upper end of the rod body penetrates out of an upper end opening of the arc-shaped groove and then is connected with the embedded steel plate.
10. A bridge seamless expansion joint chute device according to any of claims 1-9 wherein the arcuate slot is a semi-circular slot and the stop is integrally connected to the arcuate slot.

Description

Bridge seamless expansion joint chute device Technical Field The invention relates to the technical field of bridges, in particular to a seamless expansion joint chute device for a bridge. Background The information disclosed in the background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. The bridge is used as an important component of traffic construction, the road surface is smooth, firm and safe, the expansion joint is usually arranged between two beam ends, between the beam ends and the bridge abutment or at the transverse hinge joint of the bridge, the functions of adjusting displacement and connection between upper structures caused by shrinkage creep of concrete, temperature and vehicle load are achieved, the expansion joint can freely stretch and retract in two directions parallel to and perpendicular to the axis of the bridge, the bridge is firm and reliable, the vehicle on the bridge can stably run without sudden jump and noise, rainwater and refuse soil infiltration and blockage can be prevented, and the installation, inspection, maintenance and dirt removal are simple and convenient. The common bridge expansion joints mainly comprise modulus expansion joints, comb plate expansion joints, seamless expansion joints and the like. But traditional expansion joint does not have the function of deformation from top to bottom, and the roof beam end perk when receiving the load effect of bridge beam body, and the expansion joint can't carry out appropriate vertical displacement, leads to expansion joint structural failure, and life reduces to the gap is easily filled by debris, hinders bridge expansion deformation, and the waterstop is fragile leaking, and the durability is poor. Therefore, the seamless expansion joint technology is applied, for example, in patent documents such as CN113585058A, CN 107815963A. The seamless expansion joint is generally composed of an elastic expansion body and two end anchoring devices, the action principle is that the bottom of the elastic expansion body is debonded with a concrete part, the deformation of the elastic expansion body is suitable for bridge gap change, and the two end anchoring devices prevent the elastic expansion body from being separated from a beam end. However, the technical scheme still has the defects that the inventor finds that the lower part of the elastic telescopic body is a concrete beam in the bridge gap compression process when the seamless expansion joint technology is actually applied, downward displacement is limited, upward displacement is free, the elastic telescopic body is arched and is higher than a road surface, the travelling comfort and the safety are influenced, the telescopic body is easy to wear and lose efficacy, and the problem that the telescopic body is difficult to repair and replace after being damaged is further extended. Disclosure of Invention The invention provides a bridge seamless expansion joint sliding chute device which not only can well limit the vertical displacement of an elastic expansion body in a seamless expansion joint and prevent the expansion body from arching higher than a road surface, but also is easy to maintain in the later period, reduces the construction difficulty and improves the construction efficiency. Specifically, the technical scheme of the invention is as follows. A seamless expansion joint sliding chute device for a bridge comprises a sliding chute base, a spring assembly, a sliding chute cushion block, an anchoring sliding support and a pre-buried steel plate. The upper surface of the strip-shaped chute base is provided with a strip-shaped arc-shaped groove, and the inner side of an opening at the upper end of the arc-shaped groove is provided with a protruding stop block. The spring assembly is a strip-shaped arc structure formed by sequentially connecting a plurality of sections of arc springs in parallel end to end, and the strip-shaped arc structure is placed on the bottom surface in the arc groove along the length direction of the arc groove. The chute cushion blocks are strip-shaped arc plates, the two chute cushion blocks are symmetrically arranged on two sides of the spring assembly, the outer side wall of each chute cushion block is attached to the inner side wall of each arc groove, and the lower end face of each chute cushion block is abutted to the side wall of the spring assembly. The upper end of the chute cushion block is abutted against the lower surface of the stop block to form a limit. The lower end of the anchoring slide support is provided with a ball which is restrained between the two chute cushion blocks and is supported on the spring assembly. The upper end of the anchoring sliding support penetrates through the upper end opening of the