采用三维有限元方法,精细模拟了观音岩碾压混凝土重力坝多坝段的施工过程和导流过程,模拟了施工过程中的温度场和应力场,并分多个工况研究了不同温控措施条件下底板和坝体混凝土的温度应力情况。结果表明,表面流水、控制混凝土内部最高温度等措施是积极有效的。
Based on 3-D finite element method, the construction and diversion processes of several dam sections of Guanyinyan RCC Gravity Dam are elaboratedly simulated; in which both the temperature field and stress field are simulated, and then the status of temperature stresses of the bottom slab and the dam concrete under various temperature control conditions are studied for several construction conditions. The results show that the measures for the surface flowing and the control on the maximum inter- nal temperature of concrete are active and effective.