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在归纳砂土组构张量研究成果的基础上提出一个与已有弹塑性模型不同的新的增量非线性模型。该模型全面地考虑了平均压应力、归一化剪应力、Ｌｏｄｅ 角和主应力轴变化所引起的可逆和不可逆的变形，成功地模拟了单调荷载下密砂的剪胀软化和松砂的不排水剪切失稳现象，往复荷载下的残余变形和孔隙压力积累以及Ｌｏｄｅ 角和主应力轴变化下的液化现象。
On the basis of summarizing the research results of sand structure tensor, a new incremental nonlinear model different from the existing elastoplastic model is proposed. The model comprehensively considers the reversible and irreversible deformations caused by the average compressive stress, normalized shear stress, Lode angle, and principal stress axis changes. It successfully simulates the dilatancy softening of loose sand and the failure of loose sand under monotonic loads. Drainage shear instability, residual deformation and pore pressure accumulation under reciprocating loading, and liquefaction phenomena under varying Lode angles and principal stress axes.