边支座纵向弹性约束对大跨度连续刚构桥地震反应的影响

Influences of longitudinal elastic restraint of side-bearings on seismic response of long span continuous rigid frame bridge

本文以某公路大桥为工程背景，采用有限位移理论对考虑约束扭转、基础和上的相互作用的大跨度连续刚构桥进行地震反应特性分析，并主要探讨了边支座采用不同的纵向弹性约束对结构地震反应所产生的影响。通过计算分析，得出了一些对实际工程有意义的结论。

This paper uses the finite displacement theory to analyze the seismic response characteristics of the long span continuous rigid frame bridge, considering the restrained torsion and the interaction of the foundation and earth. At the same time, the influence of longitudina1 elastic restraint of side-bearings on seismic response of the bridge structures is discussed. Some useful conclusions are obtained by analyzing the results of the calculation.