钢筋混凝土拱桥构件重要性评价及超载导致倒塌破坏模拟  

Component importance evaluation and overload-induced collapse simulation for reinforced concrete arch bridge

作　　者：卢啸[1] 陆新征[1] 叶列平[1] 何水涛[1] 

机构地区：[1]清华大学土木工程系土木工程安全与耐久教育部重点实验室,北京100084

出　　处：《计算机辅助工程》2010年第3期26-30,共5页Computer Aided Engineering

基　　金：国家自然科学基金(50808106);交通运输部西部交通建设科技项目(2008-318-223-43)

摘　　要：针对近年来频频发生的拱桥倒塌事故,以某钢筋混凝土拱桥为例,建立相应的有限元模型,采用基于广义刚度的构件重要性评价方法分析拱桥各构件的重要性,指出保证结构安全的关键部位.利用清华大学开发的TECS程序模拟拱桥因超载导致倒塌的过程,其仿真结果可供拱桥倒塌事故原因分析和抗倒塌能力评定参考.As to the fact that collapse accidents of arch bridges happened frequently in recent years,a finite element model is built for a typical reinforced concrete arch bridge,and the importance of the arch bridge components are evaluated by component importance evaluation method based on generalized structural stiffness,so that the critical regions for arch bridge safety are identified.The process of collapse induced by overloading is simulated using the program of TECS developed by Tsinghua University.The simulation results of overloading collapse can provide references for the cause analysis of arch bridge collapse and collapse resistance capacity evaluation of arch bridge.

关 键 词：拱桥 重要性评价 超载 倒塌 TECS 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]