群桩的有限元分析

Finite element analysis of pile groups with rigid pile cap

基于Ｗｉｎｋｅｒ弹性地基梁理论，运用有限元方法，导出了单桩的出口刚度矩阵，进而建立了刚性承台空间群桩的总刚度矩阵．本文方法能十分方便地处理桩身变截面、桩基不规则布置、土体孔洞、软土带、土的非线性及各种边界约束情况．具有一定的工程实用价值．

Based upon the beam theory of winkler Elastic Foundation, a method for analizing pile groups foundation with rigid pile cap was proposed with finite element theory. It is very effectual and helpful in dealing with pile cross section change, piles irrugular arrangement, holes in soil body, soft soil band, soil nonlinear properties as well as different and complex boundary restrictions. So it has some practical value in engineering.