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本文根据线弹性断裂力学理论,采用多区域边界元法和二次奇性边界元计算分析了重力坝坝踵的断裂问题,结果表明;①二次奇性边界元对于求解断裂问题是十分有效的;②重力坝坝踵伸向地基的斜裂缝较之建基面的水平裂缝更具危险性。
Based on the theory of linear elastic fracture mechanics, the multi-region boundary element method and the quadratic singular boundary element method are used to analyze the fracture problem of the gravity dam dam. The results show that: 1) The second singular boundary element is very effective for solving the fracture problem. ;2 Gravity dams are more dangerous than the horizontal cracks on the foundation surface when they extend to the foundation.