基于模糊综合评判和层次分析法的桥梁安全性评估

Bridge Safety Evaluation Based on Fuzzy Synthetic Evaluation Method and Analytic Hierarchy Process

根据钢筋混凝土梁桥的受力特点建立了钢筋混凝土梁桥安全性评价模型,结合层次分析法确定各影响因素的权重,用“加权平均型”模糊综合评定方法评定桥梁的安全性等级．该评定方法能够较好地反映在役钢筋混凝土梁桥的安全性状况,可以为桥梁结构的维修加固提供决策依据,评价结果简单直观．

A safety evaluation model of existing reinforced concrete bridges is established based on analytic hierarchy process. In order to combine quantitative factor evaluation with qualitative factor evaluation, fuzzy synthetic evaluation method is used to evaluate bridge safety, in which experience of experts can be used sufficiently. Evaluation results are simple and evident, which can reflect existing bridges safety condition perfectly and provide reference for decision-making in the repair and reinforcement of the bridge structure and its components.