The safety assessment model of stone arch bridge based on fuzzy synthetic evaluation

The wide range of survey of road dangerous existing stone arch bridge in service in Three Gorges reservoir area,reveals that there has been a wide range of diseases,which seriously affected the safety of their use.A wide range of diseases,from different angles,respectively,to varying degrees,affected the performance of the stone arch bridge.In this paper,multi-level fuzzy synthetic evaluation method,a variety of factors to consider the carrying capacity decline,it introduce a reduction factor,can work with diseases of the structure of the bridge structure of the resistance value,and then loading and structure comparison,for safety evaluation.