基于模糊理论的高桥墩腐蚀损伤综合评价

Comprehensive evaluation on corrosive damage of high bridge piers using a fuzzy theory model

针对腐蚀环境作用下钢筋混凝土高桥墩工作性能的损伤状况,建立了一个系统的、能够反映钢筋混凝土高桥墩腐蚀损伤状况的评价体系,并在层次分析法(AHP)分析各个指标因素权重的基础上,建立钢筋混凝土高桥墩腐蚀损伤状况的模糊综合评价模型。借助于腐蚀环境下一在役高桥墩的现场试验数据,基于该模糊综合评价模型,对该在役高桥墩的工作性能进行模糊综合评价,计算得到该在役高桥墩腐蚀损伤状况的总体评价质量为轻微损伤。

For. the damage situation of reinforced concrete high bridge piers＇ performance in corrosive environmental effects, a systematic evaluation system was established which can reflect corrosion dam- age condition of reinforced concrete high bridge piers, and fuzzy comprehensive evaluation model of the reinforced concrete high bridge piers＇ corrosion damage condition was established based on each index weighting factor analyzed by the way of Analytic Hierarchy Process （AHP）. With the aid of field test data of a existing high bridge pier in corrosive environment and based on fuzzy comprehen- sive evaluation model, fuzzy comprehensive evaluation was made to the existing high bridge piers＇ performance. The case evaluation of overall quality is ＂slight damage＂. The project example shows that fuzzy evaluation is significance for project, as a way to evaluate corrosion damage situation of re- inforced concrete high bridge piers＇ performance.