北京市昌平区南环大桥施工过程仿真分析  

Simulation on Construction Process of Beijing Changping Nanhuan Bridge

作　　者：李浩[1] 

机构地区：[1]唐山市交通运输局公路管理站,河北唐山063300

出　　处：《交通标准化》2010年第13期57-60,共4页Communications Standardization

摘　　要：北京市昌平区南环大桥为跨径达175m的大跨径钢箱梁自锚式悬索桥,通过对其施工过程进行仿真分析,提出从成桥状态识别主缆无应力长度,进而确定主缆空缆线形及主索鞍塔顶预偏值的方法,以及合理确定吊杆张拉方案的原则,可供桥梁工程技术人员参考。Beijing Changping Nanhuan Bridge is a 175m-span steel box girder self-anchored suspension bridge. A simulation analysis of the construction process of this bridge is demonstrated. Then a method for identifying the non-stress length of the main cable from the bridge-completion state,and further determining the shape of main cable and the pre-deviation of the main cable saddle tower is put forward. A proper procedure for hanger tension is proposed,which could serve as a reference for bridge engineers.

关 键 词：自锚式悬索桥 施工过程 仿真分析 悬链线索单元 无应力长度 

分 类 号：U445[建筑科学—桥梁与隧道工程]