钢管混凝土刚构式柔性系杆拱桥的施工控制  

Construction control of a concrete-filled tubular frame arch bridge with flexible bars

作　　者：周世军[1] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《兰州理工大学学报》2005年第6期119-122,共4页Journal of Lanzhou University of Technology

基　　金：甘肃省自然科学基金(ZS981-A22-029-G);教育部高等学校骨干教师资助计划项目(教技司2000-65)

摘　　要：针对钢管混凝土刚构式柔性系杆拱桥的特点,提出了动态有限元的概念和以仿真分析为基础,以准确控制系杆索力和墩顶位移为主要控制目标的施工监控总思路,给出了钢管混凝土拱桥拱肋混凝土收缩、徐变计算的系数取值范围及对温度影响处理的技巧.实测结果和实桥控制效果表明了本文方法的有效性.According to the characteristics of concrete-filled tubular frame arch bridges with flexible bars, a conception of dynamic finite element method and general strategy of construction control, which is based on dynamic imitation analysis, was proposed. In the strategy, accurate tension of cable forces of flexible bars and control of top displacement of piers are two main construction control objections. In addition, a method for dealing with the temperature influence and a skill of assignment of the factor for calculating shrink and creep of structures was given out. It is shown by the experimental results that the proposed method and technique is valid.

关 键 词：剐构式柔性系杆拱桥 动态仿真 施工控制 

分 类 号：U445[建筑科学—桥梁与隧道工程]