비등방 항복함수를 적용한 강화지반의 탄소성해석(1)

초록

A 3-dimensional anisotropic yield function is proposed to analyze the elasto-plastic behavior of the composite materials such as grout reinforced foundations. For this, previous work on the anisotropic yield function having 1-dimensional reinforcements (de Buhan & Sudret, 1999) is now expanded to take into account of the 3-dimensional reinforcement effect. A composite yield function as well as a plastic multiplier having directional anisotropy are defined by way of the residual stresses which come from the stress differences between constituent materials. The plastic strains occurred on both constituent materials at the same time can therefore be simulated by the proposed model and the details of the implementation and numerical examples are explained in the accompanying paper (Lee, et al., 2000).