新型双层抗震挡块抗震性能研究

Study on seismic performance of seismic double-layer stopper

设计了一种新型双层抗震挡块,并研究了其抗震性能。以一座连续梁桥为例,采用非线性时程分析法对比分析了新型双层抗震挡块和传统挡块的地震响应。结果表明:在不显著增大结构内力和位移需求的情况下,新型双层抗震挡块可有效减小主梁与挡块的最大撞击力,降低桥梁因横向碰撞而引起的落梁破坏风险。

The authors designed a new seismic double-layer stopper,and studied its seismic performance. Taking a continuous beam bridge as an example,some comparative analyses were conducted between the seismic response of new seismic double-layer stopper and traditional stopper using nonlinear time history analysis method. The results show that the new double-layer stopper can effectively reduce the maximum impact force and the risk of girder falling due to the collision between girder and stopper with no significantly increase the structural internal force and displacement demands.