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从有效应力强度指标的唯一性和Ｈｅｎｋｅｌ孔隙水压力公式出发，笔者推导了正常固结饱和粘土在不同应力路径的三轴固结不排水剪切试验条件下总应力强度指标表达式；比较了各种应力路径下的φＣＵ值并初步验证了理论公式的正确性；说明了工程实践中合理选取应力路径进行试验的重要性
Based on the uniqueness of effective stress intensity index and the formula of Henkel pore water pressure, the author deduces the expression of total stress intensity index of normal consolidated saturated clay under undrained triaxial consolidation under different stress paths. The value of φCU under different kinds of stress paths and the preliminary verification of the correctness of the theoretical formula. The importance of conducting reasonable selection of stress paths in engineering practice