摘要
针对大跨径钢拱桥分析了几何非线性对横向地震响应的影响 ,并着重进行了横撑的横向地震响应分析和其对拱桥地震响应的影响 .结果表明横撑作为连接构件是横向地震作用下的薄弱环节 ,极有可能在拱肋材料进入非线性之前发生破坏 ,从而导致侧向刚度降低 ,削弱拱桥的整体面外稳定性 .
The effect of geometric nonlinearity on lateral seismic response of long span steel arch bridges is analyzed,and the seismic response of lateral bracings and its influence on arch ribs are paid special attention to.The result shows that lateral bracings are the weakness of structure under the lateral excitation,and are most likely to be damaged before the ingoing of nonlinearity of arch ribs,which may decreases the lateral stiffness and therefore reduces the lateral stability of the steel arch bridge.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第7期878-883,共6页
Journal of Tongji University:Natural Science
基金
国家自然科学基金资助项目 ( 5 0 0 780 16)
关键词
钢拱桥
地震响应
几何非线性
横撑
steel arch bridge
seismic response
geometric nonlinear
brace
