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本文采用平面应变非线性弹性有限单元法，编制了分析双排桩式围护结构的程序，藉此研究了软土地基中双排桩式围护结构的内力和变形特性。文章探讨了桩身刚度、前后排桩排距。被动区土体加固对围护结构内力和变形的影响，得到了双排桩式围护结构设计及施工的一些有益结论。结合一工程实例，数值计算和实测结果较为吻合。
This paper adopts the plane strain non-linear elastic finite element method to compile the program of the double-row pile retaining structure, and studies the internal force and deformation characteristics of the double-row pile retaining structure in soft soil foundation. The article discusses the stiffness of the pile and the row spacing of the front and rear rows. The influence of soil reinforcement in the passive zone on the internal force and deformation of the envelope structure has obtained some useful conclusions about the design and construction of the double-row pile enclosure structure. Combined with an engineering example, numerical calculations and actual measurement results are more consistent.