砂土抗剪强度的主要影响因素及其研究现状分析

Analysis of the Main Factors on the Shear Strength of Sandy Soil and the Current Research Situation

砂土的抗剪强度是砂土的重要力学指标之一,研究砂土的抗剪强度对于工程实践具有重要的指导意义。研究表明,影响砂土抗剪强度的主要因素有砂土的密实度、表面粗糙度、颗粒形状、颗粒级配以及试验条件的差异等。本文从砂土抗剪强度理论出发,分析和总结了在上述各项因素作用下砂土抗剪强度的变化规律和研究现状,并提出了目前砂土抗剪强度研究中存在的一些问题,为进一步深入研究砂土的抗剪强度问题奠定了基础。

Shear strength is one of the important mechanics in-dexes of the sandy soil, so the research on the shear strength of sandy soil plays an important role in engineering practice. Several studies show that compactness, the roughness of the surface, par-ticle shape, grain size distribution and test conditions and so on have an influence on the shear strength of sandy soil. Based on the theory on the shear strength of sandy soil, this paper analyzes and summarizes the change rules and the research status of the shear strength of sandy soil under the action of the above factors. At last, the author comes up with the problems existing in the current research on the shear strength of sandy soil and lays a foundation for further researches.