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土的应力路径(stress path)与以此为基础的应力路径法是当前研究土体的应力应变关系和强度的重要工具之一。本文阐述了应力路径的基本概念和绘制方法。分别就室内几种常规土工试验,分析它们的应力状态,得出相应的典型图幅。指出原位土体的路径与室内试验的异同。为了说明应力路径法的用途,举了几个简例,可以看出,在探索土的本性,计算地基沉降,分析土坡稳定等各个方面,它均不失为一种良好方法。对应力路径法的局限性也作了简要讨论。
The stress path of soil and the stress path method based on it are one of the most important tools for studying the stress-strain relationship and strength of soil. This article explains the basic concepts of stress paths and how to draw them. Several kinds of routine geotechnical tests were conducted on the interior and the stress state of them was analyzed to obtain the corresponding typical maps. Point out the similarities and differences between the path of in-situ soil and the indoor experiment. In order to illustrate the use of the stress path method, several simple examples are given. It can be seen that it is a good method to explore the nature of the soil, calculate the settlement of the foundation, and analyze the stability of the slope. The limitations of the stress path method are also briefly discussed.