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非饱和土是公路边坡工程中经常遇到的土类,传统的计算方法是基于饱和土理论的分析,然而实际的土为非饱和土与饱和土不同,非饱和土中是由固相、液相和气相三项组成,气相的存在使土的性质大为复杂化,因此,应用非饱和土理论分析边坡的稳定性更为切合实际,本文介绍了非饱和土抗剪强度理论在公路边坡工程中的应用,并通过有限元软件对工程非饱和土边坡进行受力分析,最终给出了利用非饱和土抗剪强度的实用化公式和分析流程,为非饱和土条件下的公路边坡工程问题的分析提供了理论基础。
Unsaturated soil is often encountered in highway slope engineering soil, the traditional calculation method is based on the analysis of saturated soil theory, but the actual soil is unsaturated soil and saturated soil is different from unsaturated soil by the solid phase, Liquid phase and gas phase. The presence of gas phase complicates the properties of soils. Therefore, it is more practical to analyze the stability of slopes based on unsaturated soil theory. In this paper, the theory of shear strength of unsaturated soils, Slope engineering and finite element software for engineering unsaturated soil slope stress analysis, and finally gives the use of unsaturated soil shear strength of the practical formula and analysis process for unsaturated soil conditions The analysis of highway slope engineering provides the theoretical basis.