【摘要】 结合结点力学广义位移原理,在坝体横缝位置设置广义接触点对,将接触点对间的约束以接触力代替,导出接触点对上的位移、接触力与坝体梁单元出口结点位移及内力间的关系,进而导出包含缝面上广义结点在内的柔度矩阵,根据缝面上的接触条件组装柔度矩阵,得到以接触力为未知量的求解方程。通过整体拱梁法和接触缝面非线性迭代的交替求解,实现了拱梁分载法中对拱坝横缝的静动力非线性接触过程的模拟。算例表明了本文分析方法的正确性。更多还原

【Abstract】 The pairs of contact points are adopted to record the generalized-displacements of the transverse joints of arch dams.By applying the generalized displacement principle of nodal mechanics,the relationships of the nodal contact forces and displacements of the joints versus the internal forces and displacements on the exit nodes of beam elements can be derived.And then the flexibility matrix involving all the nodes on the joints can be also derived.By adopting the multi-arch-cantilever method and a contact iterative method,the nonlinear contact of transverse joints can be simulated for static and dynamic cases of arch dams.A test case is given to verify the method.更多还原