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中文摘要：
采用有限元强度折减法进行边坡稳定分析,建立边坡内最大水平方向位移与折减系数尖点突变模型,并以此作为边坡是否失稳的判断标准.算例分析表明,采用该模型作为失稳判据能体现边坡失稳过程的突变性,物理意义明确;计算结果与传统极限平衡Spencer法计算结果相当接近.同时,将失稳判据量化到一个确定的值,通过比较该值与零的关系来判断边坡是否失稳,概念明确,界定清晰.
英文摘要：
A cusp catastrophe model of key point＇s horizontal displacement and reduction coefficient is built by using the strength reduction finite element method to evaluate the slope stability. The analysis of example indicates that the mutability of slope failure process can be reflected when this model is employed as the slope failure criterion. The safety factor and potential slip surface obtained by this method is fairly close to the results gotten by traditional limit equilibrium Spencer method. Meanwhile, the method quantifies the failure criterion as a fixed value and the stability of theslope is evaluated by comparing the relationship between the value and zero.
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