基于层次分析-模糊评价的边坡稳定性分析

Slope Stability Analysis Based on Analytic Hierarchy Process and Fuzzy Evaluation

为了解决公路边坡稳定性分析的不确定性、随机性和模糊性问题,采用模糊数学的理论建立二级模糊综合评价模型,采用降半梯型分布函数确定连续型变量的隶属度,并利用层次分析法确定各因素指标权重,采用专家现场评定的方法确定层次分析法的判断矩阵,可以减少公路边坡稳定性分析过程中主观因素造成的误差;结合实例分析,验证了方法的可行性。

In order to solve the uncertainty,randomness and fuzziness of highway slope stability analysis,a two-level fuzzy comprehensive evaluation model adopts the theory of fuzzy mathematics is established in this paper.The membership degree of continuous variable is determined by using the half-ladder distribution function and the weight of each factor is determined by analytic hierarchy process.The expert judgment method is used to determine the judgment matrix of the analytic hierarchy process.It can reduce the error caused by subjective factors in the process of highway slope stability analysis.Combined with case analysis,the feasibility of the method is verified.