下承式拱桥考虑吊杆失效的稳定性分析

Stability Analysis on Through Arch Bridge Considering Suspender Failure

江苏通扬运河大桥为下承式钢管混凝土拱桥,以它为研究对象,采用有限元程序,计算分析拱桥吊杆失效对桥梁空间稳定的影响。计算结果表明,该下承式钢管混凝土拱桥吊杆损伤对桥梁的低阶稳定安全系数影响较小。

Tongyang Canal Bridge in Jiangsu Province is a through concrete-filled steel tube arch bridge.Taking it as research object,the influence of suspender failure of arch bridge on bridge space′s stability is analyzed using finite element program.The result shows that the influence of suspender failure of concrete-filled steel tube arch bridge on assurance factor of low-order stability of bridge.