超大跨径钢斜拉桥的温度荷载调研与温度效应分析  

Investigation and Analysis of Temperature Acts on Long-span Steel Cable-stayed Bridges

作　　者：邓小伟[1] 石雪飞[1] 阮欣[1] 

机构地区：[1]同济大学桥梁工程系,上海200092

出　　处：《石家庄铁道大学学报（自然科学版）》2010年第3期57-62,共6页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

基　　金：国家科技支撑计划项目(2006BAG04B00)

摘　　要：以苏通大桥为背景,调研各国规范对斜拉桥温度作用的相关规定,进而研究超大跨径钢斜拉桥的温度静力响应。研究将斜拉桥的温度作用分为体系温差、索梁(塔)温差、主梁温度梯度、主塔温度梯度四个方面分别讨论,利用考虑几何非线性影响的有限元软件ANSYS计算分析斜拉桥的温度效应及各构件对温度的敏感性。分析结果可以为今后同类桥梁的设计或计算提供参考和依据。Based on the background of Sutong Bridge, this paper investigates several codes of the temperature acts on cable-stayed bridges, and studies the static response to temperature acts of long span steel cablestayed bridges. The temperature loads consist of four parts as follows ： uniform temperature component, tempera- ture differences between cables and deck （or tower） , temperature differences for bridge decks, and temperature differences for bridge towers. ANSYS, the finite-element software considering the geometric non-linear effect, is applied to analyze the temperature effects on cable-stayed bridges and the sensitivity of each structural member. The results can be referenced for the design or calculation of similar bridges.

关 键 词：超大跨径钢斜拉桥 温度作用 几何非线性 温度效应 敏感性 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]