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土的抗剪强度是土体在某种状态(包括物理状态、物理化学状况、受力和变形状态、受力时间等)下受力后的一种反映。它受很多因素的影响,所以不是一个固定不变的值,它随空间和时间而变,这样就造成了抗剪强度研究的复杂性,长久以来成为土力学工作者的重要研究课题之一。 本发展水平报告的目的在于介绍近年来国内外在抗剪强度研究中的主要成果。内容包括砂土和粘性土的抗剪强度、非饱和土的抗剪强度、受时效影响的粘性土的强度,以及粘性土的微观研究等方面。
The shear strength of soil is a reflection of the soil under a certain state (including physical state, physical and chemical conditions, stress and deformation state, stress time, etc.). It is influenced by many factors, so it is not a fixed value. It changes with space and time. This causes the complexity of shear strength research and has long been one of the important research topics for soil mechanics. The purpose of this development level report is to introduce the major achievements in shear strength research at home and abroad in recent years. The content includes the shear strength of sand and clay soil, the shear strength of unsaturated soil, the strength of clay soil affected by aging, and the microscopic study of clay soil.