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文章在阐述极限分析的意义和现状后，给出了由日本学者川井忠彦教授提出的“刚体弹簧模型的有限元法（简称ＲＢＳＭＦＥＭ），并与传统的有限元法相比说明了刚体弹簧模型有限元法在结构极限分析中所具有的优点．文章还运用根据刚体弹簧模型有限元法所研制的程序对条形基础作用下半无限大地基的极限承载力进行了分析，计算结果表明，该方法能解决相关联流动的岩土力学问题．具有计算精度高速度快的优点．
After elaborating on the significance and status quo of the limit analysis, the paper presents a “rigid body spring model finite element method (RBSMFEM)” proposed by the Japanese scholar Kawai Tadanobu and compared with the traditional finite element method, the rigid body spring model finite element method Method in structural limit analysis.The results also show that this method can calculate the ultimate bearing capacity of semi-infinite foundation under strip foundation by using the program developed by the finite element method of rigid body spring model Solve the problem of rock mechanics associated with the flow, has the advantages of high accuracy and high speed.