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基坑支护结构全过程内力和变形分析的杆系有限元计算方法由于能模拟施工过程而在支护结构设计中广泛应用，但通过分析发现，从土压力分布的角度来说，目前所采用的梯形土压力分布模式只能用于无限均布地面荷载作用下的均质土基坑。本文对于有限地面荷载作用下的多层土基坑提出了合理的土压力计算方法，并与梯形土压力分布模式进行了对比。
The finite element method for the calculation of the internal forces and deformations of the foundation pit supporting structures is widely used in the design of supporting structures because it can simulate the construction process. However, it has been found through analysis that the earth pressure distribution is currently used. The trapezoidal earth pressure distribution pattern can only be used for homogeneous soil foundation pits under infinite uniform ground loading. In this paper, a reasonable soil pressure calculation method is proposed for multi-layered soil foundation pits under limited ground loads, and compared with trapezoidal earth pressure distribution patterns.