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以土层分层、支撑位置及抗弯刚度变化处等为结点对围护墙体进行单元划分，按地基系数法考虑开挖面下被动土体横向抗力．基于单元挠曲微分方程的初参数解．通过传递矩阵分析方法，结合围护墙两端及支撑轴力的边界条件．推导得多支撑支护结构各开挖工况下围护墙各结点的内力、变形及支撑轴力。编制了计算程序，并以上海太平洋广场一期工程基坑开挖为例进行分析计算。该法可用于求解上层分层、围护墙刚度随深度变化等情况．能更好地符合工程实际问题。
The division of the retaining wall is divided into units by soil layering, support position and change of bending stiffness, etc. The lateral resistance of the passive soil under the excavation surface is considered by the foundation coefficient method. Elementary solution based on elemental flexural differential equations. Through the transfer matrix analysis method, the boundary conditions of the two ends of the retaining wall and the supporting axial force are combined. Deduced the internal forces, deformations and supporting axial forces at each node of the retaining wall under the conditions of excavation of the supporting support structure. A calculation program was compiled and an analysis calculation was made using the excavation of the foundation pit of Shanghai Pacific Plaza Phase I project as an example. This method can be used to solve the upper stratification, the stiffness of the retaining wall changes with depth, etc. Can better meet the practical problems of engineering.