大跨度PC斜拉桥施工控制中温度效应分析  

Analysis of Temperature Influence on Long-span Prestress Concret Cable-stayed Bridge Construction Control

作　　者：陈常松[1,2] 颜东煌[1] 程海潜 涂光亚[1] 刘乐天[1] 

机构地区：[1]长沙交通学院,湖南长沙410076 [2]中南大学铁道学院,湖南长沙410075 [3]湖北省路桥公司

出　　处：《公路交通科技》2002年第6期84-87,共4页Journal of Highway and Transportation Research and Development

摘　　要：从温度变化引起杆系结构的变形和受力特点出发 ,提出采用不同的多项式函数分区拟合结构温度场 ,并将温度变化等效成荷载计算温度变形的方法 ,经过实桥测试验证并与其它方法比较 ,本方法能够准确地计算施工控制中的温度影响 ,具有足够的工程精度。In this paper, a method of eliminating the temperature influence is developed. Diverse polynominal functions are adopted to simulate the temperature change distribution in the girder with π shape cross section of Pc cable-stayed bridge. Based on the classical structure mechanics, the temperature deformation is transformed into equivalent load to calculate the structure reaction. By the verification of construction control in an actual bridge, the majority of temperature influence can be estimated and removed away with adequate precision.

关 键 词：斜拉桥 施工控制 温度影响 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]