招徕河薄碾压混凝土双曲拱坝温控防裂措施分析

Research on Temperature Control Measures for the Zhaolaihe River Thin RCC Double-curvature Arch Dam

根据招徕河薄碾压混凝土双曲拱坝的施工安排,采用三维有限元仿真计算方法,对比分析了拱坝在无温控措施、有预冷措施、有预冷+一期通水冷却措施、预冷+一期通水冷却+保温板措施等四种工况下的温度场和应力场的变化情况,其计算分析成果,可供薄碾压混凝土拱坝温控设计参考。

Based on the scheduled construction of the Zhaolaihe river thin RCC double - curvature arch dam, the 3D FEM is used to simulate and calculate the temperature field and stress field during construction. A comparison is made among the measures of dam concrete placement temperature control under 4 working conditions, i. e. without temperature control, with pre - cooling, with pre - cooling ＋ cooling water pipes, and with cooling water pipes ＋ insulating polystyrene plates. The calculation and analysis results can serve as a reference for temperature control design of a RCC arch dam.