高温多雨条件下碾压混凝土温控防裂研究

On the Temperature Control and Crack Prevention of Roller Compacted Concrete under Hot and Rainy Conditions

为解决高温多雨地区碾压混凝土温控防裂问题,以某高碾压混凝土重力坝为例,采用三维有限元温度及温度应力仿真,考虑高温多雨条件,对碾压混凝土的施工期温度场及应力场进行了分析,提出了高温多雨地区碾压混凝土施工的温控防裂措施,为确保高温多雨地区碾压混凝土坝全年连续快速施工提供了质量保障。

The temperature control and crack prevention of roller compacted concrete（ RCC） under hot and rainy conditions are analyzed. Using the three-dimensional finite element method,the temperature and stress fields of a high RCC gravity dam under hot and rainy conditions are calculated. Then,temperature control and crack prevention measures are proposed and implemented. It guarantees the quality of the continuous and rapid construction of RCC dams in high temperature and rainy areas.