大跨度分步施工石拱桥仿真分析

Simulation analysis of the long span stone arch bridge of constructing by fractional steps

大跨度分步施工石拱桥 ,由于受到结构组成时序的影响 ,结构各部位的应力与变位随时都在发生变化 ;通过对世界最大跨径石拱桥——丹河大桥的施工仿真研究 ,找到了分步施工石拱桥施工仿真控制及分析方法 。

Because the method of long span fractional steps of constructing the stone arch bridge is affected by the time sequencing of forming the structure,the stress and the displacement among the structure change at any time.In this paper,the construction simulation of Danhe bridge is studied,which is the longest span stone arch bridge in the world,the construction simulation control and method of fractional steps of constructing the stone arch bridge are found,at the same time,the high stress area in arch toe is discovered.