大坝底孔应力边界元计算分析

本文应用边界元直接列式法的基本原理及方程,编写了常量元边界元法的FORTRAN程序,用于我国某正建大型水电站大坝泄洪排砂底孔的孔口应力分析,取得了满意的结果。与传统的光弹性试验及有限元法计算结果进行比较,表明本文的方法是解决类似问题的有效手段,可供工程设计借鉴。程序可用于解决某些弹性力学平面问题,较之有限元法具有时间短、速度快、节省经费、工作量小等优点。

THE BOUNDARY ELEMENT ANALYSIS OF STRESS AROUND THE BOTTOM OUTLET

In this paper, the FORTRAN program of boundary element method with constant element is oompiled by using the'direct' techniques, and satisfied results is obtainned in the stress analysis of bottom outlet whioh belongs to a high dam of a Large hydropower station being built in our country. In comparision with traditional photoelastie experiment result and calculated result of FEM, this method is also reflected to be an effective technique in solving similar problems, hence it can be used a reference for engineering design. Since the program possess adwntages of saving time, fast computing speed and less expense as compared with FEM, it can be adoped in solving some two-dimensional problem of elastioity and also can be provided for engineering designer.