本文的非线性有限元分析方法,是用来处理土坝的二维有限元静力分析的。应力～应变模型是采用康德,邓肯等人提出的双曲线应力应变关系和奈勒提出的K-G模型。计祘程序中能分析二维实体单元和接触面单元,载荷可作为一步或多步施加。加荷过程模拟土坝的填筑顺序进行。材料的加载、卸载、破损和湿化引起的位移等的处理,在程序中作了考虑。 The nonlinear finite element analysis method in this paper is used to deal with the two-dimensional finite element static analysis of earth dam. The stress-strain model is based on the hyperbolic stress-strain relationship proposed by Kant and Duncan, and the K-G model proposed by Nielsen. The 祘 program can analyze two-dimensional solid elements and contact surface elements, and the load can be applied as one or more steps. The loading process simulates the earth dam filling sequence. Material handling, unloading, damage and displacement caused by wetting, etc., are considered in the program.