通过对某佛塔基础底板大体积混凝土施工难点进行分析,对浇筑前混凝土中的温度峰值、温度应力进行了模拟计算。深入研究了三种裂缝控制新技术,结果表明:加入相变材料的大体积混凝土的升、降温速率明显变得缓慢,在一定程度上减少了混凝土温度裂缝产生的概率;设置滑动支座改善约束条件,对防止大体积混凝土的开裂起到了明显的作用;充分利用混凝土自身的徐变、应力松驰特性,以时间控制裂缝,是一种消耗资源最少的方法。 By analyzing the construction difficulty of mass concrete in the foundation of a stupa, the temperature peak and temperature stress in concrete before pouring are simulated. Three kinds of new technology of crack control are studied in depth. The results show that the rising and falling rate of mass concrete with phase change material obviously becomes slow, which reduces the probability of concrete temperature crack to a certain extent. Conditions, to prevent the cracking of large-volume concrete played a significant role; make full use of concrete creep, stress relaxation characteristics, control of cracks in time, is a way to consume the least resources.