超长地下室顶板混凝土温度应力分析

Temperature Stress Analysis of Overlong Basement Roof Concrete

以连云港市某住宅小区地下室作为研究对象,建立超长地下室结构的温度分析模型并利用相关理论计算混凝土季节温差、混凝土收缩的当量温差。通过有限元软件计算,对超长地下室结构顶板在均匀降温作用下的受力和变形规律进行分析研究。探讨降温温差及后浇带闭合时间对地下室顶板产生的温度效应影响,提出控制温度收缩裂缝的方法和措施。

The basement of a residence community in Lianyungang is taken as the research object, and the temperature analysis model of the super long basement structure is to be established by using the relevant theory to calculate the concrete temperature and concrete shrinkage equivalent to the corresponding temperature difference.Through the finite element software calculation, the roof stress and the deformation law of the overlong basement structure under the effect of uniform cooling is investigated. The cooling temperature difference, the temperature effect of closing time of back on the basement roof, and methods and measures to control the temperature and shrinkage cracks are put forward.