基坑围护结构上的土压力与土体位移关系分析

假定土压力与位移关系曲线为双曲线型，结合土体性质，得到与土体位移有关的土压力计算公式．通过对比有限元与该公式计算所得的作用于基坑围护结构上的土压力，说明该公式可以根据周围环境的允许变形准确地计算土压力，从而达到控制变形的目的．

Relationship between earth pressure on support structure of foundation pits and displacement of earth mass

Under the assumption that a hyperbolic relationship existed between the earth pressure and displacement, a formula for earth pressure, varying with the displacement of soil mass, was derived with the characteristics of earth mass taken into account. The comparison of the calculated result of the present formula with that of the finite element method demonstrates that the present formula can give an accurate result about earth pressure under certain deformation allowable, so that the deformation of earth mass can be effectively controlled.