混合梁斜拉桥静力有限元模拟

The static finite element simulation of hybrid girder cable-stayed bridge

混合梁斜拉桥是由塔、梁、索三部分构成的结构体系。本文结合甬江左线特大桥的结构特点和荷载情况,利用有限元软件Midas建立了全桥有限元模型,介绍了全桥模型的建立和斜拉索、主梁、索塔的模拟方法,并通过边界条件的模拟与荷载的取值分析了全桥成桥状态下和列车运行状态下全桥主梁和斜拉索的受力特点。

The cable-stayed bridge is a structure system which is composed of three parts： tower, beam and cable. Based on the structure characteristic and load of ＇the Yongjiang super large bridge＇ , using the finite element software Midas, the finite element model of the whole bridge is established. The whole bridge model and simulation method of cable, main girder, pylon are introduced, and the stress characteristics of main girder and stay cables are analyzed through simulation of boundary conditions and loads under completion state and train running state.