混凝土斜拉桥采用前支点挂篮悬臂浇注施工的中间索力确定方法  

Determination of the Interim Cable Forces of Cable-stayed Bridges with Concrete Girders during the Cantilever Cast-place Construction Using Form Travelers with Fore-fulcra

作　　者：李学文[1] 田仲初[1] 颜东煌[1] 

机构地区：[1]长沙交通学院桥梁与结构工程系,湖南长沙410076

出　　处：《公路交通科技》2002年第5期77-79,共3页Journal of Highway and Transportation Research and Development

基　　金：国家教育部2000年高等学校骨干教师资助计划项目(特大跨度混凝土斜拉桥的设计状态确定与施工控制关键技术研究)

摘　　要：根据前支点挂篮的受力要求和混凝土主梁的受力情况综合确定混凝土斜拉桥的中间索力 ,即先根据前支点挂篮的受力要求确定混凝土斜拉桥中间张拉索力的允许范围 (即上下限 ) ,再利用上下限的平均值代入正装计算过程中进行计算 ,并根据混凝土主梁的受力情况在上下限范围内对中间索力作适当的调整 。The interim cable forces of cable?stayed bridges with concrete girders are determined on the basis of the actual conditions to which form travelers with fore?fulcra and the concrete girders are exposed The allowable scope (viz upper limits and lower limits) of the interim cable forces of cable?stayed bridges is determined on the basis of the actual conditions to which form travelers with fore?fulcra are exposed at first, and then the calculations are started according to the averages of the upper limits and lower limits and the interim cable forces used to adjust among the upper limits and the lower limits depending on the actual conditions to which concrete girders are exposed until the results are satisfactory

关 键 词：斜拉桥 前支点挂篮 中间索力 悬臂现浇施工 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] U445[交通运输工程—道路与铁道工程]