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边坡失稳破坏是岩土工程中常遇到的工程问题之一,因此,在工程设计中,常根据需要进行边坡稳定性分析计算。常用的边坡稳定分析方法是安全系数法,它是经过长期工程实践证明的一种有效设计方法。本文针对影响边坡稳定性的主要因素,采用瑞典条分法、简化Bishop法、Janbu法、有限元强度折减法对土的抗剪强度指标c、φ值,边坡的坡角α和坡高H进行分析,通过不断改变单一变量的值,得出其与边坡安全系数的关系,并采用Excel软件分析拟合出公式,从而得出简单可行的判断边坡稳定的方法。
The failure of slope failure is one of the engineering problems often encountered in geotechnical engineering. Therefore, in the engineering design, the slope stability analysis and calculation are often needed according to the needs. The commonly used slope stability analysis method is the safety factor method, which is an effective design method proved through long-term engineering practice. In this paper, according to the main factors that affect the stability of slope, the shear strength index c, φ, slope angle α and slope height of soil are calculated by the method of Swedish bar, simplified Bishop method, Janbu method and finite element strength reduction method H, the relationship between the slope safety factor and the slope safety factor is obtained by continuously changing the value of a single variable, and the Excel software is used to analyze and fit the formula so as to obtain a simple and feasible method for judging the slope stability.