转体施工独塔斜拉桥设计探讨  

Discussion on Design of Single Pylon Cable Stayed Bridge with Swivel Construction Technique

作　　者：王小兵[1] 许志艳[1] 

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《高速铁路技术》2015年第1期81-84,共4页High Speed Railway Technology

摘　　要：随着高速铁路网的不断建设,邻近、跨越既有高速铁路的工程建设是不可避免的。转体桥对既有铁路运营干扰少,其应用越来越广泛;而斜拉桥具有造型美观,跨越能力强,跨径布置灵活的特点。因此采用转体施工的斜拉桥具有很高的研究价值。沪昆客运专线长沙枢纽联络线以21°交角跨越武广高速铁路,桥梁结构采用(32+80+112)m非对称独塔双索面斜拉桥,采用转体施工方法。笔者采用有限元分析程序对该桥梁结构进行了详细分析,从转体施工的关键技术到桥梁结构关键受力部位、安全保障措施,均进行了深入的探讨和研究,提出了优化意见,确保了本桥得以顺利实施,有效减少了施工干扰,降低了安全风险,为类似工程提供了借鉴和参考。With the continuous construction of high-speed railway network, the engineering constructions near or across the existing high speed railways cannot be avoided . The swivel bridges will be used more widely in future because it brings less interruption on operation of existing railway. Meanwhile, the cable-stayed bridge has many advantages such as beautiful appearance, large spanning ability and flexible span arrangement and so on. Therefore, the cable-stayed bridges built with swivel construction method has very high research value. Changsha hub connecting line of Shanghai-Kunming passenger dedicated line crosses Wuhan-Guangzhou passenger dedicated line with 21° angle, and 32 ＋80 ＋112 m unsymmetric cable-stayed bridge with single pylon and double cable plane is adopted for the bridge structure with swivel construction technique. The author analyzes the bridge structure detailedly using the finite element analysis pro-gram and studies deeply the key technology of the swivel construction, key stress part and safety measures of the bridge structure, puts forward some optimization suggestions to smooth construction of this bridge, decrease the construction in-terruption, reduce the safety risk and provide reference to the similar bridge projects.

关 键 词：高速铁路 转体施工 斜拉桥 设计探讨 

分 类 号：U445.465[建筑科学—桥梁与隧道工程]