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分析重力壩应力的方法,大致可分为两类:一种是基于材料力学的假定,把壩体当作一变截面的懸臂梁;一种是根据弹性力学小变形理论的假定,求解艾雷(Airy)应力函数。由于重力壩作用力和边界条件均极复杂,欲解出应力函数的解析式很困难,因此常常采用一些近似的方法,例如莱威(M.Levy)的半无限高三角楔体的应办分析法;伽略尔金(ББ.Γ.Γaлеркин)的半无限高梯形楔体的应力分析法等,但这些方法都未考虑地基变形的影响。另外还有所谓纲格法,这是一种结构
The method of analyzing the stress of gravity dam can be roughly divided into two categories: one is based on the assumption of material mechanics, the dam as a variable cross-section cantilever; one is based on the assumption of small deformation theory of elasticity, (Airy) stress function. Due to the extremely complex forces and boundary conditions of gravity dam, it is very difficult to solve the analytic formula of stress function. Therefore, some approximate methods are often used, for example, M.Levy semi-infinite high-wedge should be analyzed Method of stress analysis of semi-infinite high-trapezoidal wedges, etc., but these methods do not consider the influence of foundation deformation. In addition there is the so-called hierarchical method, which is a structure