Cable restraint pier anti-seismic structure

Abstract

The invention discloses a cable restraint pier anti-seismic structure, which comprises at least one pier which is longitudinally arranged, a left bridge abutment and a right bridge abutment at the left end and the right end and a superstructure which is supported on the piers and the left and right bridge abutments, a first cable is connected between two adjacent piers, the left and right bridge abutments and the piers close to the left and right bridge abutments are all fixed by a second cable, and connecting ends of the first cable and the second cable are both connected in the upper part of the piers. The cable restraint pier anti-seismic structure has simple and novel structure and can solve the problems that the piers generate too large displacement under earthquakes which leads to the damage of the superstructure, the piers generate too large internal force at the bottom of the piers to be damaged under earthquakes, and a foundation generates too large interface force to be damaged under earthquakes.

Description

technical field [0001] The invention relates to a bridge structure, in particular to an anti-seismic structure of a cable-constrained bridge pier. Background technique [0002] China is located between two major seismic belts in the world—the circum-Pacific seismic belt and the Eurasian seismic belt. It is squeezed by the Pacific plate, the Indian plate and the Philippine Sea plate, and the seismic fault zone is very developed. China is a country severely affected by earthquakes with high frequency, high intensity, shallow focus and wide distribution. The Tangshan earthquake on July 28, 1976 and the Wenchuan earthquake on May 12, 2008 caused huge casualties and economic losses to our country. Bridge engineering is the throat of traffic lifeline, but it is also the highway building most prone to earthquake damage. In order to improve the seismic performance of bridges, researchers in the engineering field have been working hard for various research work for many years. [0...

AI Technical Summary

Problems solved by technology

Disadvantages of this method: As the demand for earthquakes increases, it is necessary to continuously increase the cross-sectional area and reinforcement of the piers and foundations, especially for pile foundations, sometimes it is difficult to design to meet the requirements

When subjected to a large earthquake, the bridge pier may be in a plastic state, which will inevitably cause excessive displacement of the pier top, and there may be a possibility of falling beam damage

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