斜拉桥无应力状态控制法闭合条件  

Study on Closed Condition of Stress-free Status Control Method for Cable-stayed Bridge

作　　者：廖原[1] 范中林[1] 

机构地区：[1]湖北省交通规划设计院,武汉430051

出　　处：《交通科技》2014年第4期35-38,共4页Transportation Science & Technology

摘　　要：运用无应力状态控制法基本原理对大跨度斜拉桥施工控制计算中影响其计算结果闭合的因素进行分析,重点讨论了合龙、支座安装、临时支撑安装和拆除引起的状态不闭合,以及非线性和混凝土收缩徐变影响引起的计算不闭合。并在此基础上总结出斜拉桥无应力控制法闭合条件,以及实现闭合的计算流程。The influence factors on closed conditions of construction control in large span cable-stayed bridge is analyzed in this paper. The unclosed conditions factors in status are caused by bridge closed, bearing installation, temporary support installation and removal. The unclosed conditions factors in calculation are caused by nonlinearity and concrete shrinkage and creep. On this basis, the calculation process of closing conditions by free stress status control method for cable stayed bridge is summed up.

关 键 词：无应力状态控制法 闭合条件 斜拉桥 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]