同泽大桥拉索横梁成桥阶段静力分析

Static Analysis for Cross Diaphragm of Tongze Brideg in Finished Stage

斜拉桥拉索横梁除承受多个方向的荷载作用以外,还需传递斜拉索拉力,其剪力传递路径非常复杂。以同泽大桥工程为背景,采用MIDAS/FEA有限元分析软件建立拉索横梁模型,对拉索横梁成桥阶段的受力特性进行分析,重点研究了拉索横梁横向受力特性,探究其拉应力产生的原因。

In addition to bearing the loads in multiple directions,the cross diaphragm of cable-stayed bridge has to transfer the stress of stay cables. The transfer path of shear forces is complicated. This paper takes the engineering of Tongze bridge as an example,analyzing the mechanical behavior of cross diaphragm in finished stage.The Tongze bridge is a kind of prestressed concrete cable-stayed bridge with single arched and inclined tower. The model of cross diaphragm is established by the finite element analysis software Midas/FEA. This paper focuses on the mechanical behavior of transverse tension stress of cross diaphragm,and explores the causes.