A self-resetting energy dissipation structure suitable for bridges

Abstract

The invention belongs to the technical field of bridge structure energy dissipation and seismic absorption, and discloses a self-resetting energy dissipation structure suitable for a bridge, which comprises an isolation bearing connecting a bridge span and a cover beam; An energy dissipation damper connecting a bridge span and a cover beam; And a reset assembly comprising a prestressed tendon passing through a gap between the bridge span and the cover beam, a first movable stop and a second movable stop respectively arranged at both ends of the prestressed tendon and abutting against the coverbeam and the bridge span, and an anchor arranged on the prestressed tendon and used for anchoring the first movable stop and the second movable stop. Beneficial effects of the invention include: thelateral displacement of the bridge is limited by the flexible combination of the stopper and the prestressed reinforcement, At that same time, the invention can allow the bridge span to slide betweena cover beam, reduce the seismic force transmitted to the pier and the pile foundation by the bridge span, reduce the damage to the bridge caused by the earthquake, provide the restoring force by theprestress reinforcement, have the self-resetting function, and reduce the repair cost and cycle.

Description

technical field [0001] The invention relates to the technical field of energy dissipation and shock absorption of bridge structures, in particular to a self-resetting energy dissipation structure suitable for bridges. Background technique [0002] my country is an earthquake-prone area, located in the subduction zone between the Pacific plate and the Eurasian plate, and the collision zone between the Indian plate and the Eurasian plate, where the crustal movement is active. The destructive intensity of the earthquake was extremely great, which brought huge loss of life and economy to our country. As an important part of the lifeline project, the bridge is responsible for the transportation hub and important node, and it is also the most easily damaged and most difficult to repair in the earthquake, which is related to the smooth progress of the earthquake relief. The rapid recovery after the earthquake is highly valued. [0003] The continuous girder bridge includes a brid...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, propose a self-resetting energy-dissipating structure suitable for bridges, and solve the technical problem in the prior art that effectively constrains the lateral displacement of bridge spans

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