拱坝静力分析的一种简化方法

在拱坝试载法和拱梁模态法的基础上提出了一种更为简便、高效的供坝静力分析方法。其基本思想是以拱梁交点变位协调条件建立协调方程，并以矩形和三角形荷载分布作为荷载基向量进行坐标交换，使方程自由度数大为降低；通过求解线性矛盾方程组，得到最终结果。根据以上方法编制了适用于一般微机的拱坝静力分析程序，得到了比较满意的结果。该方法为拱坝方案比及优化设计提供了切实可行的途径。

Simple method for static analysis of arch dams

A simple and effective method for static analysis of arch dams, which is based on the trial load method and the arch-cantilever strip synthesis methed of arch dams, is developed. Its basic idea is that an arch dam can be divided into arch and cantilever systems and the equation of compatibility can be obtained 'according to the displacement comtinuity condition of arch- cantilever joint. Performing coordinate transformation by using rectangular triangular and parabolic load on arch as basic load, it makes the freedom of the equation highly reduced. Based on the proposed method, a micro-computer program for the static analysis of arch dams has been worked out. Authors have got some satisfatory results by computing a few arch dams. It is shown that the method is characterized by requiring less imput information, minimizing storage capacity, saving computing time and achieving higher precision. It gives a good way for the optimum design of arch dams.