基于推倒分析的典型大跨连续刚构桥易损性研究  

The Research on the Vulnerability of Typical Large Span Continuous Rigid Frame Bridge Based on Pushover Analysis

作　　者：张志恒 

机构地区：[1]山西长治公路勘察设计院,山西长治046000

出　　处：《山西交通科技》2014年第3期84-88,共5页Shanxi Science & Technology of Transportation

摘　　要：为研究地震作用下典型大跨连续刚构桥的易损特征,采用大型有限元通用程序midas/civil,对一座典型大跨连续刚构桥梁进行了全桥模式的非线性推倒分析研究。根据纵桥向的推倒加载模式,进行了推倒分析计算,分析了结构总推倒分析曲线,计算了全桥的薄弱环节,确定了可能的塑性铰位置和出铰顺序。研究结果对于预测地震时全桥易损结构部位有重要的理论意义,可供类似大跨连续刚构桥抗震分析参考。In order to study the vulnerability characteristics of the typical large span continuous rigid frame bridge under the seismic effect, this paper used a large-scale finite element general program midas/civil to study the nonlinear pushover analysis of the full bridge mode on a typical large span continuous rigid frame bridge. The research results had important theoretical significance of the full bridge vulnerable structure parts for predicting the earthquake, which provided reference for seismic analysis of the similar large span continuous rigid frame bridge.

关 键 词：桥梁工程 大跨连续刚构桥 推倒分析 推倒曲线 易损性 塑性铰 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]