现浇异型板桥的桥面开裂事故分析  

Analysis of Cracking Accident for Cast-in-Situ Special Slab

作　　者：何庆明[1] 

机构地区：[1]国家林业局昆明勘察设计院,云南昆明650216

出　　处：《昆明理工大学学报（自然科学版）》2011年第4期29-32,56,共5页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金(51068012);云南省自然科学基金(2009CD034)

摘　　要：由于现浇异型板具有对道路线形的良好适应性,因此在城市立交桥中得到广泛的使用.针对某一现浇异型板立交桥出现的大量裂缝问题,进行了计算和分析.计算时考虑了温度梯度效应和支座变位效应.分析表明,调整支座的约束可以有效降低温度应力.通过理论计算和实测数据对比,分析了该桥设计中存在的问题并提出解决方法.Due to its easy adaption to road bridges. One cast-in-situ special slab bridge alignment, cast-in-situ special slab is widely used in interchange is calculated and analyzed for its cracking accident. Temperature grade effect and displacement of the support effect is considered in the due process. It is useful to decrease temperature stress by changing bearing restraint. By comparing measured data and calculated data, the existing design problem is analyzed and solutions are finally proposed.

关 键 词：异型板 立交桥 开裂 温度梯度 支座变位 

分 类 号：U445.71[建筑科学—桥梁与隧道工程]