论超长地下室大体积筏板基础温度应力分析研究  

Analysis and Research on Temperature stress of Raft Foundation In mass Basement

作　　者：夏璐[1] 朱宝胜[1] XIA Lu;ZHU Baosheng(School of civil Engineering and Architecture,Anhui Technical College of Water Resources and Hydroelec tric power,Hefei 231603,China)

机构地区：[1]安徽水利水电职业技术学院建筑工程学院,安徽合肥231603

出　　处：《安徽建筑大学学报》2020年第3期16-19,共4页Journal of Anhui Jianzhu University

基　　金：安徽省高校省级科学研究项目(KJ2018A0731)。

摘　　要：超长地下室大体积筏板基础由于不设置永久性结构缝,会因为季节温差、混凝土自身收缩当量温差和混凝土徐变的应力松弛的综合作用产生温度应力作用。本文通过对超长地下室大体积筏板基础温度应力分布规律及相关参数取值方法,提出控制温度裂缝的相关方法及措施。以200 m×300 m的地下室筏板基础为例,应用有限元软件Midas Gen程序进行模拟分析,得出温度应力对地下筏板的影响作用,通过温度应力分析结果给出相应的构造措施来实现对裂缝的合理控制,为今后类似工程的施工提供一定的参考。Because there is no permanent structural joint in the raft foundation of mass basement,the temperature stress will be produced due to the combined action of the seasonal temperature difference,the equivalent temperature difference of concrete shrinkage and the stress relaxation of concrete creep. In this paper,the distribution of temperature stress and the method of relative parameter value for the large volume raft foundation of super-long basement are discussed,and the relative methods and measures for controlling temperature cracks are put forward. Taking the raft foundation of 200*300 m basement as an example,the finite element software MIDAS Gen is used for simulation analysis,and finally the temperature stress on the raft of basement is obtained Finally,through the corresponding structural measures to achieve the control of raft foundation cracks,It provides a certain reference for the construction of similar projects in the future.

关 键 词：超长地下室 筏板基础 温度应力分析 

分 类 号：TU470[建筑科学—结构工程]