箱形桥梁内外温差空间效应分析  

Spatial Effect Analysis of Internal and External Temperature Differences of Box Girder Bridge

作　　者：田浩[1] 李国平[1] 李方元[1] 孔海霞[2] 

机构地区：[1]同济大学,上海200092 [2]中交公路规划设计院,北京100010

出　　处：《桥梁建设》2006年第6期21-24,共4页Bridge Construction

基　　金：江苏省交通科学研究计划项目(04Y036)

摘　　要：为研究箱梁内外温差对其抗裂性影响的程度,以苏通大桥辅桥(140+268+140)m大跨径连续刚构桥为对象,采用结构空间分析有限元软件,建立空间整体分析模型,针对箱梁内外温差对抗裂性的影响进行分析,并与相同条件的结构平面杆系有限元分析软件计算结果进行比较。To study the degree of influences of the internal and external temperature differences of the box girder on its cracking resistance properties, the auxiliary bridge of Sutong Bridge, a long span continuous rigid-frame box girder bridge with span arrangement （140＋ 268＋ 140） m, is taken as the research object and the structural spatial finite element analysis software is used to establish a spatial global structure analysis model to analyze the influences of the internal and external temperature differences on the cracking resistance properties of the girder, and the results of the analysis are also compared to those of the calculation by structural plane link finite element analysis software under similar conditions.

关 键 词：箱形梁 温度 空间效应 有限元法 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]