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边坡稳定性影响因素有很多,如何从众多因素中确定它们影响边坡稳定的主次关系,从而进行有效的支护,是公路边坡研究中的重要课题。针对杭兰高速公路一典型的路堑边坡,采用正交试验设计法,借助于slide极限平衡软件对影响边坡稳定性的七种因素进行了敏感性分析,得出了不同因素对边坡稳定性的影响程度。同时采用有限元数值模拟分析方法,进行了边坡开挖支护前后的对比分析,证实了正交分析的可靠性,为公路路堑边坡的稳定性研究提供了有用的方法。
There are many factors that affect the stability of slopes. How to determine the primary and secondary relationships that affect the stability of slopes from many factors, so as to effectively support it, is an important issue in the study of highway slopes. Aiming at a typical cutting slope of Hangzhou-Lanzhou Expressway, orthogonal experiment design method is used to analyze the sensitivity of seven factors affecting slope stability by means of slide limit balance software. The results show that different factors affect slope stability The degree of sexual influence. At the same time, by means of finite element numerical simulation method, the comparative analysis before and after slope excavation and support was carried out, and the reliability of orthogonal analysis was verified, which provided a useful method for the study on the stability of highway cutting slope.