拉萨河特大桥主桥施工方案设计  

Construction Scheme Design for Main Bridge of Lhasa River Bridge

作　　者：李凤芹[1] 王祯[1] 

机构地区：[1]铁道第三勘察设计院桥梁处,天津300142

出　　处：《桥梁建设》2005年第5期24-27,33,共5页Bridge Construction

摘　　要：介绍了拉萨河特大桥总体施工方案的设计情况,主桥施工采用的先梁后拱法、连续梁系杆分段现浇、预应力的布置方法,以及体系转换前对吊杆预施较小的初张力等施工方法,对设计和施工具有较高的参考价值。The design of the overall construction scheme for Lhasa River Bridge is presented. The construction methods adopted for the main bridge of the Bridg in the construction scheme, such as erection of the continuous girder prior to that of the arches, casting of the girder tie beam in segments, layout of prestressing systems and applying of slight initial tensioning force to the hangers prior to the whole structure system transformation, are of considerable reference to the design and construction of similar bridges.

关 键 词：连续梁 钢管混凝土拱 组合结构 施工方案 

分 类 号：U448.22[建筑科学—桥梁与隧道工程] U448.215[交通运输工程—道路与铁道工程]