Large-displacement modular multidirectional deflection expansion joint

Abstract

The invention discloses a large-displacement modular multi-directional deflection expansion joint. The large-displacement modular multi-directional deflection expansion joint comprises a main toothedplate, an auxiliary toothed plate, a first bridge body and a second bridge body, the bottom face of the main toothed plate arranged on the first bridge body in an overlapped mode is fixedly connectedwith one part of the top face of a transverse deflection plate, the other part of the top face of the transverse deflection plate and main teeth are in matched connection with one end of a deflectionplate cover plate, the deflection plate cover plate transversely slides relative to the transverse deflection plate and the main toothed plate, the other end of the deflection plate cover plate is fixedly connected with the first bridge body, a sliding groove is formed in the other part of the top face of the transverse deflection plate, the side edge of the main toothed plate matched with the deflection plate cover plate and the side edge of the sliding groove are bevel edges, wherein the side edge of the main toothed plate and the side edge of the sliding groove are located on the same side,the other side edge of the sliding groove matched with the deflection plate cover plate is a vertical edge, a fixing plate in matched connection with the transverse deflection plate and fixed to thefirst bridge body is arranged on the lower part of the transverse deflection plate, and the transverse deflection plate slides in the transverse and / or the bridge direction relative to the fixing plate. The large-displacement modular multi-directional deflection expansion joint is simple in structure, and the transverse displacement changing amount can be at least + / -500 mm under the extreme situation.

Description

Technical field [0001] The invention relates to the technical field of bridge construction, in particular to a large-displacement modular multi-directional displacement expansion joint. Background technique [0002] In order to meet the needs of bridge girder body deformation, bridge expansion joints are generally installed between the two girder ends of the bridge, between the girder end and the abutment or the hinged position of the bridge. With the development of road transportation, the amount of road traffic The load of cars is getting heavier, and the requirements for various performances of highway bridge expansion and contraction continue to increase. [0003] At present, similar bridge expansion joints only use the tooth spacing between the comb teeth to realize the change of lateral displacement, but the range of displacement change is small. For some extreme natural phenomena, such as earthquakes, the existing bridge expansion joints cannot meet the requirements. The re...

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Problems solved by technology

[0003] At present, the same kind of bridge expansion joints only use the tooth spacing between the comb teeth to realize the change of lateral displacement. However, the range of displacement change is small. For some extreme natural phenomena, such as earthquakes, the existing bridge expansion joints cannot meet the requirements. The requirement of super large lateral displacement change, the displacement beyond the rated displacement range of the expansion joint will affect the normal operation of the bridge expansion joint and reduce the service life of the bridge expansion joint

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