Earthquake-resistant bridge abutment with flexible walls

Abstract

The invention relates to an earthquake-resistant bridge abutment with flexible walls, belonging to the technical field of bridge earthquake resistance. The flexible wall earthquake-resistant bridge abutment comprises a vertical pile, an inclined pile, a pile cap foundation, a support crossbeam, an enlarged bridge deck, reinforced concrete flexible damping walls, an earthquake-resistant joint, a case-type retaining wall and expanded polyvinyl benzene plates; the enlarged bridge deck is formed by extending a thick bridge deck on a bridge spanning structure onto the bridge abutment; the verticalpile and the inclined pile support the pile cap foundation of the bridge abutment; the support crossbeam, a plurality of reinforced concrete flexible damping walls and the case-type retaining wall are fixedly arranged on the pile cap foundation in the cross bridge direction in sequence; the upper parts of the reinforced concrete flexible damping walls are rigidly connected with the enlarged bridge surface plate; the expanded polyvinyl benzene plate is embedded between reinforced concrete flexible damping walls; and the earthquake-resistant joint is formed between the last reinforced concrete flexible damping wall and the case-type retaining wall. Through the elastic deformation of the flexible damping walls, the earthquake-resistant bridge abutment with the flexible walls has the advantages that the displacement of the upper structure of the bridge can be effectively reduced and the integral earthquake resistance of the bridge structure system can be enhanced.

Description

technical field [0001] The invention relates to an abutment in bridge engineering, in particular to a flexible wall anti-seismic abutment applied to a bridge with high requirements for anti-seismic performance or an anti-seismic bridge, belonging to the technical field of anti-seismic bridges. Background technique [0002] The bridge abutment is the joint part of the bridge structure and the highway engineering. Its main function is to support the upper structure of the bridge and maintain the stability of the backfill of the embankment behind the bridge abutment. It is the weak link of the bridge structure in the earthquake. , the abutment was severely damaged in the earthquake. [0003] Common abutments in modern highway bridge engineering include supported abutments and integral or semi-integral abutments. For the supported abutments widely used in modern reinforced concrete bridges, the current bridge design specification is to separate the bridge through expansion joint...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned defects, the present invention provides a flexible wall anti-seismic abutment, which solves the problems of easy collision and beam drop between the bridge superstructure and the abutment under the action of strong earthquakes in engineering.

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