Novel super-large transverse displacement modular multi-directional displacement expansion joint

Abstract

The invention relates to a novel super-large transverse displacement modular multi-directional displacement expansion joint, which comprises a main toothed plate, an auxiliary toothed plate, a first bridge beam body and a second bridge beam body, wherein the bottom surface of the main toothed plate which is arranged on the first bridge beam body is fixedly connected with one part of the top surface of a transverse displacement plate; the other part of the top surface of the transverse displacement plate and the main teeth are respectively connected with one end of a displacement plate cover plate in a matching way; the other end of the displacement plate cover plate is fixedly connected with the first bridge beam body; a chute is formed in another portion of the top surface of the transverse displacement plate; the side of the main toothed plate that cooperates with the displacement plate cover is a first oblique side; the two sides of the chute that cooperate with the displacement plate cover are second oblique sides; the angle between the first oblique side and the vertical plane is smaller than the angle between each second oblique side and the vertical plane; the outer periphery of the transverse displacement plate is provided with a fixed base that is coupled to and fixed to the first bridge beam body. The novel super-large transverse displacement modular multi-directionaldisplacement expansion joint can achieve that the transverse displacement variation is at least+/-500mm under the extreme condition.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a novel ultra-large transverse displacement modular multi-directional displacement expansion joint. Background technique [0002] In order to meet the needs of bridge girder deformation, bridge expansion joints are generally installed between the two girder ends of the bridge, between the girder end and the abutment, or at the hinge position of the bridge. With the development of road transportation, road traffic volume and The load of automobiles is getting bigger and bigger, and the performance requirements for the expansion and contraction of highway bridges are constantly improving. [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 bridg...

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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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