Double-hinge system bridge expansion device

Abstract

The invention relates to a bridge expansion joint, and provides a double-hinge system bridge expansion device. The double-hinge system bridge expansion device comprises at least two supporting beam assemblies and a joint striding beam located between two adjacent supporting beam assemblies; and the supporting beam assemblies are sequentially distributed at intervals in the direction vertical to the length direction of a structural joint, each end of the joint striding beam is hinged to the adjacent supporting beam assembly, a hinge shaft is parallel to the length direction of the structural joint, and the other adjacent supporting beam assemblies are connected through expansion structures. According to the bridge expansion joint, the joint striding beam and the two adjacent supporting beam assemblies are connected in a hinge manner, and therefore the overall expansion device forms a double-hinge system structure, and the bearing beam assemblies and the joint striding beam are located in one plane system. By means of the double-hinge structure system, the joint striding beam can adapt to the rotating angle of the two adjacent supporting beam assemblies, upwarping of parts of structures of the expansion device due to the fact that a beam body is under various conditions can be further avoided, and the multi-direction deflection requirement of the beam body is met.

Description

technical field [0001] The invention relates to bridge expansion joints, in particular to a double hinge system bridge expansion device. Background technique [0002] The telescopic device is a key part of the bridge components and plays an important role in realizing the bridge function. Common bridge expansion devices include plate rubber expansion devices, steel modular expansion devices, and comb-tooth plate expansion devices. [0003] During the construction and operation of the bridge, it will be subjected to vehicle loads, shrinkage and creep of the bridge's own materials, foundation settlement, wind load, etc., causing deformation of the bridge beam end. There are different degrees of spatial movement in the six degrees of freedom of the bridge expansion joints (displacement and torsion in the three directions of XYZ), which will cause extrusion, stretching, torsion, dislocation, settlement and other spaces for the expansion device installed at the end of the bridge...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a double-hinge system bridge telescopic device, which aims to solve the problem of the existing telescopic devices, especially the comb-tooth bridge telescopic device, which easily affects the driving when the beam body sinks under the load and the beam end upturns and turns. safety issue

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