运梁车过汉江特大桥的结构安全分析

Structural Safety Analysis for the Transporting Girder Vehicle Passing through Hanjiang Bridge

以跨越汉江的武汉西四环线汉江特大桥(主桥为77m+100m+360m+100m+77m五跨一联双塔双索面预应力混凝土斜拉桥)为例,基于通用有限元程序ANSYS12.1,对施工期间运梁车从指定路线通行汉江特大桥进行整体和局部结构验算,同时对比不同运梁路线下的结构应力分布情况。结果表明,在指定路线运梁车荷载作用下,汉江特大桥结构整体和局部受力均满足承载能力要求,结构安全可靠。

Taking Hanjiang Super-major Bridge（77＋100＋360＋100＋100mfive-span twin towers double plane cable stayed bridge）located at Wuhan West Fourth Circle Highway passing through Hanjiang River as an example,based on general finite element program ANSYS 12.1,the overall and local structure checking are conducted during the construction period along the course race passing though Hanjiang Bridge,and the different structure stress distribution under different transporting girder route is compared.The results show that,under the vehicle loads on the specified transporting route,the structure overall and local stress of the Hanjiang Super-major Bridge can satisfy the requirements of bearing capacity,the bridge structure is safe and reliable.