应变软化土体中柱形扩孔解析

An Analytical Solution to Cylindrical Cavity Expansion in Softening Soil Mass

给出了考虑剪胀作用的线性软化土体中柱形孔扩张的应力、位移场解析解;根据体积平衡方程导出极限扩孔压力和最大塑性区半径的解析表达式,较好地弥补了经典理论的不足;

An analytical solution to cylindrical cavity expansion in linear softening soil mass with shear dilation is presented in this paper. On the basis of volume equation, the limit expansion pressure and maximum plastic zone radius are given. The results in this paper overcome some shortcomings of the classic theory and agree well with the practice. The effects of softening and shear dilation on cavity expansion are discussed as well.