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采用三维有限元对龙滩大坝施工及运行进行了多种工况的仿真计算 ,得出了横缝间距、保温板厚度与上游面温度应力的关系曲线 ,指出了易于发生劈头裂缝的部位与原因 ,并建议了合理的施工方案以避免劈头裂缝的出现 .
Three-dimensional finite element method was used to simulate the construction and operation of Longtan Dam under various conditions. The relationship between the transverse joint spacing, the thickness of the thermal insulation board and the thermal stress on the upstream face was obtained, and the location where the initial fracture occurred easily Reason, and suggested a reasonable construction program to avoid the emergence of cracks.