引言水库蓄水常用重力坝截流,特别是大型水库,几乎全用重力坝.所以,重力坝的应力状态分析,对合理设计,精确施工,特别对确保水库的安全运转具有重要的意义. 以前,重力坝的应力分析常用差分法和复变函数论的拟似共形映照.然而,前者在边界条件的处理上常会遇到一些困难,而后者的映照函数是近似的,难以保证解的精度,所以都不是理想的方法. 近二、三十年来,数字计算机的功能、速度、容量及软设备等方面都取得了巨大的发展.几乎与计算机问世的同时,也萌发了结构分析的有限元素法概念,这门学科,现已发展成为具有很强生命力的应用的和理论的学科.这方面的研究资料很多,但在有 Introduction Reservoir dam is often used in dam closure, especially in large reservoirs, almost all of which are used in gravity dam. Therefore, the analysis of stress state in gravity dam is of great significance to rational design and accurate construction, especially for ensuring the safe operation of reservoirs.In the past, However, the former often encounters some difficulties in dealing with the boundary conditions, while the latter one has a similar mapping function and it is difficult to guarantee the accuracy of the solution. Therefore, So it is not an ideal method.In recent two or three decades, the digital computer has made tremendous development in its function, speed, capacity and soft equipment, etc. At the same time as the advent of computers, the finite element method Concept, this discipline, has now developed into a highly viable application and theory of discipline in this area a lot of research information, but in the