【摘要】 本文根据实际施工进度及实际测得的相关热力学参数,对碾压混凝土拱坝进行三维有限元仿真分析,综合考虑了气温、水温、自重、水压、水化热、徐变等的共同作用,计算得到了坝体从施工到运行共650d的温度场及应力场分布情况,表明在坝体施工阶段32m坝高附近会产生较大的拉应力,导致坝体出现裂缝,计算结果和实际情况比较吻合。更多还原

【Abstract】 The three-dimensional finite element simulation analysis of roller compacted concrete arch dam is conducted according to construction schedule and actual measurement thermodynamic parameters.The temperature field of dam in 650 days from the construction to the obtained and the distribution of stress field are obtained under the comprehensive action of air temperature,water temperature,dead weight,water pressure,hydration heat and creep.The result indicates that considerable tensile stress is produced close to 32 m of dam height in the construction of dam,it leads to the fissure of dam.The calculation result accords with the actual situation.更多还原