基于AHP-FUZZY算法的独塔斜拉桥安全性评价

Single Pylon Cable-Stayed Bridge Safety Evaluation Based on AHP-FUZZY Algorithm

根据独塔斜拉桥的结构特点,结合系统工程中常用的层次分析法和模糊综合评判法对在役独塔斜拉桥的安全性进行了评价.建立了桥梁安全性评价模型,在现场实测试验数据和专家咨询的基础上,采用多级模糊综合评判方法,分析确定了影响桥梁安全性的各因素的权重及隶属度,并得到桥梁安全性的模糊评判结果,按照最大贴近度原则,最终确定桥梁的安全性等级,为在役桥梁的后期养护管理提供了科学依据.

According to the structure characteristics of a single pylon cable-stayed bridge,the paper evaluated the safety of a single pylon cable-stayed bridge in service with analytic hierarchy process and fuzzy comprehensive evaluation method in system engineering.The paper established the safety evaluation model, and determined the weight and membership of the influence factors of safety with multi-grade fuzzy comprehensive evaluation method,which was based on the actual test data and expert advice,and then got the fuzzy evaluation results of bridge safety.Finally,according to the maximum degree of membership,the paper determined the bridge safety level,especially provided scientific basis for the bridge maintenance and management in service later.