中文摘要：

结合K_0超固结土模型、旋转角ω公式、临界状态不排水条件以及基于SMP的变换应力张量建立了不排水抗剪强度的统一表达式;采用三轴压缩、三轴拉伸的应力洛德角θ、旋转角ω建立了三轴压缩、三轴拉伸条件下的不排水抗剪强度公式;基于临界状态土力学,推导出了平面应变条件下的应力洛德角θ、旋转角ω的表达式,进而得到平面应变条件下的不排水抗剪强度公式.分别采用三轴压缩、三轴拉伸和平面应变条件下试验数据对所提出的不排水抗剪强度公式进行验证,预测结果和试验数据的基本吻合表明了不排水抗剪强度公式的合理性.

英文摘要：

The unified equation of the undrained shear strengths is deduced by combining K_0 overconsolidated clay model,the function of rotating angle,the critical state conditions of the clay and the transformed stress tensors based on SMP criterion.The stress Lode angleθand the rotating angleωunder the triaxial com- pression and extension condition,and under the plane strain compression condition are applied to develop the corresponding undrained shear strength equations,respectively.The theoretical results for K_0...