确定斜拉桥施工索力的影响矩阵法!  

The Influence Matrix Method to Determine the Initial Cable Force of the Cable-stayed Bridges

作　　者：冯仲仁[1] 苗永慧[1] 王雄江[1] 

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070

出　　处：《武汉理工大学学报》2012年第2期85-90,共6页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50908184);武汉理工大学自主创新基金(2010-ZY-TJ-038;2010-IV-012)

摘　　要：基于线性影响矩阵的理论基础上,从施工临时荷载、现浇梁段自重、张拉斜拉索和解除临时约束4种工况来考虑,通过正装分析方法模拟斜拉桥的施工过程对初张拉力的影响,导出根据设计成桥索力准确计算施工初张拉力的方法,并结合江苏泗阳大桥工程实例验证此方法的准确性。此方法能根据设计成桥索力准确地计算施工初张拉力,对斜拉桥索力施工具有一定指导意义。The influence matrix method was applied to determine the initial cable forces of the cable-stayed bridges,considering the four factors during each construction phase——the initial cable forces,the dead loads of segment beams,the temporary loads and the removing of temporary restrains.Moreover,the accuracy of this method is verified by the example of Si-yang bridge.Results shown that this method is applicable for the construction control of similar bridges.

关 键 词：影响矩阵 斜拉桥 施工张拉力 有限元 

分 类 号：TU279[建筑科学—建筑设计及理论]