COMPREHENSIVE SAFETY ASSESSMENT METHOD FOR RETAINING WALL ON EXISTING RAILWAY

The safety situation of retaining wall is directly related to the safety of railway transportation system. Evaluation of the safety of the retaining wall is a problem urgently to be solved in. In this paper, the safety evaluation index system of retaining wall on the existing railway is established. It includes surface view of status, material status, and force status. These status are level indicators. It also includes wall body, wall, cracks, mortar and other six projects. They are the secondary indicators. The index system has the advantages of distinct, and the combination of qualitative and quantitative. In order to overcome the subjectivity of traditional safety assessment methods, the analysis hierarchy process and fuzzy mathematical comprehensive safety assessment method are put forward. The method quantifies evaluation results. The result of the research of safety assessment system of retaining wall combining practical engineering shows that the method can give the retaining wall a more objective overall evaluation.