砼温度应力计算理论在地下室裂缝控制中的应用

Application of Concrete Temperature Stress Method in the Control of Basement Crack

结合工程实际,运用砼温度应力计算理论,对大体积浇筑地下室底板砼,在凝结养护过程中所产生的温度收缩应力的计算。估量砼浇筑后可能产生的最大温度收缩应力,及自然养护条件下7天时的温度收缩应力,并采取有效措施,控制温度收缩应力对地下室底板砼裂缝的影响。

This paper, based on practices, using concrete temperature stress method, calculates the temperature stress of the bottom slab of mass-mixed basement during the curing period, and estimates maximum shrink stress of freshly-mixed concrete caused by temperature and the shrink stress 7-day-cured under the natural condition. Effective measures are taken to control the influence of temperature stress on basement bottom slab.