非对称独塔斜拉桥成桥索力优化研究

Research on optimization of cable tensions of dead load state for asymmetric single pylon cable-stayed bridge

以广东省内某非对称独塔斜拉桥为工程背景,借助有限元程序和Matlab里的优化模块来获取索力,并根据内力和位移响应对索力进行局部微调,得到合理成桥索力,通过计算表明,斜拉桥在成桥阶段线形平顺,结构受力合理。

Based on a asymmetric single pylon cable-stayed bridge in Guangdong Province,with the help of finite element software and optimization module in Matlab,the cable tensions can be obtained,then according to internal force and displacement response of the bridge,the reasonable finished cable tensions can be got by adjusting some local cable tensions. The calculated results show the line shape of the main girder is smooth and the bridge structure force is reasonable at the stage of the completion.