上海长江大桥组合索塔锚固区受力数值计算

Numerical Calculation of Stress Conditions of Anchorage Zone in Composite Pylon of Shanghai Changjiang River Bridge

结合上海长江大桥具体工程,采用空间有限元模型详细模拟索塔中各部分构件,考虑钢锚箱与混凝土间的相互作用,计算索塔中钢锚箱板件的应力和混凝土的应力,分析斜拉索索力在索塔锚固区的传递分配关系。

With reference to the practical construction of Shanghai Changjiang River Bridge, the 3-dimensional finite element model is used to simulate in details each component part of the pylon of cable-stayed bridge, in which the interaction between the steel anchor housing and concrete of the pylon is considered. The stress of plates for the steel anchor housing and stress of the concrete are calculated, and the transmission and distribution relations of stay cable forces in the anchorage zone of the pylon are analyzed as well.