多种减隔震装置共同作用的斜拉桥抗震分析

Aseismic Analysis of Cable-stayed Bridge under Action of Various Damping and Isolation Devices

摘要:

宝鸡市陈仓渭河特大桥是一座位于高烈度地区的混凝土斜拉桥,该桥抗震采用多种减隔震设计。抗震分析表明该体系减震效果显著,能够有效减小桥梁纵横向位移,改善结构受力。

Abstract:

Weihe River of Chencang in Baoji is a concrete cable-stayed bridge located in high seismic intensity area. By considering the tress characteristics of the cable-stayed bridge, the damping and isolation scheme of friction pendulum ball bearing and viscous damper is adopted. The pile-soil interaction is considered to reasonably establish the spatial finite element model in order to carry out the aseismic analysis and design of cable-stayed bridge. The aseismic analysis shows that the damping effect of this system is obvious, can effectively reduce the vertical and horizontal displacements of the bridge and improve the structural stress.