Bridge expansion joint device with ability of vertical deflection

Abstract

The invention discloses a bridge expansion joint device with the ability of vertical deflection, comprising a transverse joint plate (3) over the bridge expansion joint. At least one downwardly-protruding support arm (32) is arranged at the bottom of the second end of the transverse joint plate (3); the tail end surface (32a) of each support arm (32) is an arc surface corresponding to each support arm (32); corresponding holders (4) are fixed on the bridge body; each holder (4) is provided with a pit (41) the bottom of which is matched with the tail end surface (32a) of the support arm (32); the pit (41) is slightly larger than the corresponding support arm (32); and the tail end of each support arm (32) is supported in the corresponding pit (41). Compared with the prior art, the invention ensures that the support arm at the bottom of the transverse joint plate can rotate freely in the pit of the holder along the second end of the transverse joint plate relative to the rotating direction of the bridge body during vertical corner deflection of the bridge body so that the surface of the transverse joint plate maintains smooth all the time for vehicles to pass successfully; besides, as the holder has a relatively small thickness, therey the invention is particularly suitable for the application environment with a thinner bridge deck pavement layer.

Description

Technical field [0001] The invention relates to the technical field of bridge expansion joints, in particular to a bridge expansion joint device with vertical displacement capability. Background technique [0002] Among the existing bridge expansion joints, the comb type expansion joint with fixed comb plate and movable comb plate is a better one, especially in super large bridge expansion joints with expansion and contraction of more than 300 mm. This is the case for the Chinese invention patent "A super-large flexural comb-type bridge expansion joint device" proposed earlier with the patent number ZL200410049491.5 (publication number CN1333137C). The bridge expansion joint device includes two bridge expansion joints. The fixed comb plate and the movable comb plate on the side beam body, wherein the first end of the movable comb plate is provided with comb teeth and intersected and spaced with the comb teeth of the fixed comb plate, and the bottom of the second end of the movabl...

AI Technical Summary

Problems solved by technology

[0003] In this solution, the bottom of the movable comb plate needs to be equipped with a rotating shaft that is consistent with the width of the movable comb plate, and several axle seats need to be fixed on the surface of the beam body. The top and bottom must have a certain thickness, and after installation, the surface of the movable comb board needs to be flush with the road surface. In the environment where the bridge deck pavement layer on the surface of the beam body is thin, the shaft seat at the bottom of the movable comb board cannot meet the requirements. thickness, therefore, the implementation of this solution is not very suitable in this environment

Moreover, the implementation structure of this solution is more complicated, and the installation matching is also more particular

Images