把筋材的作用等效成附加应力（等效附加应力）作用在上骨架上，从而可以把加筋土当成素土来计算。这种新的计算方法思路明晰，参数推求简单，并可利用现有的土的本构模型，不需要针对加筋土引进新的模型。笔者在以往工作的基础上，通过试验，把附加应力的计算与加筋方向上的应变直接建立关系，给出了求取参数的办法，从而使进一步的有限元计算比较容易实现。 The effect of reinforcement is equivalent to the additional stress (equivalent additional stress) acting on the upper skeleton so that the reinforced soil can be calculated as prime soil. This new calculation method has clear thinking, simple parameter estimation, and can use the existing soil constitutive model and does not need to introduce new models for reinforced soil. On the basis of past work, the author through experiments, directly calculated the relationship between the calculation of additional stress and the strain in the direction of stiffening, and provided a method for obtaining parameters, so that the further finite element calculation is relatively easy to implement.