独塔混合梁斜拉桥施工控制仿真分析

Simulation analysis of construction control for hybrid girder cable-stayed bridge with single tower

以某独塔混合梁斜拉桥采用满堂支架法施工为例,介绍了其结构形式,进行了施工过程的仿真分析,结果表明,全部拉索张拉后钢箱梁截面最大应力沿纵向呈"S"形,但在施加桥面铺装后,钢箱梁受力变得均匀,索塔和主梁在施工过程中应力满足规范要求。

The structure configuration and for hybrid girder cable-stayed bridge with single tower were introduced,which was constructed using full framing cast-in-place method. The indices for construction control were calculated. The results show that the maximum stress of steel box girder along the longitudinal section is＂S＂type after all the cable tensioning. However,stress becomes uniform when the deck pavement is applied.The stress of cable tower and main girder in the construction procedures meet with the prescriptions of design code.