自锚式悬索桥体系转换过程的无应力状态控制法  

Control Method of Stress-Free Status in Transition Process of Structural System for Self-Anchored Suspension Bridge

作　　者：牛登辉 周志祥[1] 吴海军[1] 王邵锐[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2014年第1期21-24,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：交通运输行业联合科技攻关项目(2010-353-341-230)

摘　　要：以满足自锚式悬索桥目标成桥状态为前提,针对如何确定自锚式悬索桥体系转换过程中吊索张拉力及张拉程序的问题,提出了自锚式悬索桥体系转换过程的吊索张拉计算方法:调整吊索无应力长度的降温法。由于倒退分析法和传统无应力状态控制法在计算自锚式悬索桥体系转换过程中存在缺陷,在传统无应力状态控制法的基础上,提出了调整吊索无应力长度的降温法。该方法可用于计算自锚式悬索桥且计算方法简单,计算精度高。In order to determine the tension and tensioning procedure in the transition process for self-anchored suspension bridge, a calculation method for the hanger tensile force in this process was proposed. It is the cooling method of adjusting the hanger stress-free length. Since there are some disadvantages in the regressive analysis method and traditional unstressed state control method, the cooling method of adjusting hanger stress-free length was presented based on traditional unstressed state control method. It is simple and has a high accuracy in the calculation of the hanger tensile force for self-anchored sus- pension bridge.

关 键 词：自锚式悬索桥 吊索张拉 结构体系转换 无应力状态控制法 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]