钢桁斜拉桥单悬臂拼装墩顶起顶量分析

Analysis on lifting amount of steel truss beam cable-stayed bridge single cantilever girder pier

以贵广铁路思贤窖特大桥工程为例,对钢桁斜拉桥单悬臂拼装墩顶起顶量进行了分析,指出在单悬臂施工过程中,为保证钢桁梁的线形要求,每个临时墩墩顶标高都要预先设定,且在施工中需要在相应墩顶起顶来保证钢桁梁能顺利过临时墩。

Taking the Sixianjiao extra large bridge project in Gui-Guang railway as an example, this paper analyzed the lifting amount of steel truss beam cable-stayed bridge single cantilever girder pier, pointed out that in the construction process of single cantilever, in order to ensure the linear requirements of steel truss beam, each temporary pier top level should be set in advance, and in the construction process need lifting ac- cordingly at the pier top to ensure that the steel truss girders could smoothly through the temporary pier.