无支座连续刚构桥地震易损性分析

无支座连续刚构桥是最近新发展起来的一种新型结构，已在广州、长沙、福州等城市的轨道交通结构中 得到大量应用，但目前对于无支座连续刚构桥的抗震性能研究较少。以典型无支座连续刚构桥为背景，首先应用 增量动力分析方法，揭示无支座连续刚构桥的地震损伤、破坏过程；在此基础上基于地震易损性分析方法，给出 无支座连续刚构桥桥墩典型地震易损性曲线，探讨无支座连续刚构桥地震损伤破坏风险。

Seismic Vulnerability Analysis of Continuous Rigid-frame Bridge Without Support

The continuous rigid-frame bridge without support is a new type of structure developed recently, extensively used in the rail transit structures of Guangzhou, Changsha, Fuzhou, and in other cities. However, research on the seismic performance of the continuous, rigid-frame bridge without supports has been limited. Based on the typical, continuous rigid-frame bridge without support, the paper analyzes the failure process and seismic damage risk of the continuous rigid frame bridge without support in the presence of an earthquake. On this basis, based on the seismic vulnerability analysis method, the typical seismic vulnerability curves of piers of continuous rigid frame bridge without support are given, and the seismic damage risk of continuous rigid-frame bridge without support is discussed.