土体参数对改良黄土边坡变形的影响

为了探讨固化剂SH改良黄土边坡的物理力学参数对边坡变形的影响,以山西太原的湿陷性黄土为研究对象,进行了直剪试验,测得了不同含水率下改良黄土的内摩擦角和黏聚力;并以此试验数据为依据,基于有限元ABAQUS软件分析了不同含水率、弹性模量和泊松比对边坡变形的影响。研究结论显示:固化剂SH能明显提高黄土的抗剪强度;含水率对改良黄土边坡变形的影响较大,但泊松比对改良黄土边坡变形几乎没有影响。研究结论为固化剂SH在黄土地区的推广使用提供了一定的参考价值,并对实际边坡工程的设计、治理提供了理论依据。

Effects of soil parameters on deformation of improved loess slope

This work aimed to study the physical and mechanical parameters which influence the deformation of improved Loess slope. Using the collapsible loess taken from Shanxi Taiyuan as the object of study, direct shear test was carried out, cohesion and the internal friction angle of improved loess were obtained under different water contents; and then based on the testing data, the finite element software ABAQUS was used to discuss the effect of different moisture content, elastic modulus and Poisson''s ratio on slope deformation. The result of the study showed that: The solidified agent SH could improve the shear strength of loess; The water content had great effect on deformation of improved loess slope, Poisson ratio had almost no effect on deformation of improved loess slope. The research results provide certain reference value for the promotion of solidified agent SH in the loess area, and also give theoretical references for the design and management of the actual slope engineering.