在役桥梁耐久性状态评估

长期以来桥梁状态评估都忽视了耐久性评估,桥梁结构是一个复杂的系统,影响其耐久性状态的因素复杂而繁多。层次分析法(AHP法)将复杂的系统层次化、简单化,并通过比较各影响因素的重要性确定评估指标的初始权重。根据评估指标的初始权重和检测数据,利用变权原理确定评价指标的变权重。模糊综合评估法较好地解决了桥梁结构的模糊性和算法的确定性之间的矛盾。基于层次分析法,结合斜拉桥自身结构特点根据相关规范建立了斜拉桥耐久性状态评估递阶层次模型。在理论分析的基础上给出了桥梁耐久性状态模糊综合评估法的流程图。

The durability condition assessment of bridge in service

The bridge structure is a complex system, and the factors affecting the durability state are complex and various, while the bridge durability condition assessment are always ignored. Analytic Hierarchy Process （AHP） make complex system hierarchical and simplification, and we get the initial assessment indexes weights through comparing the importance of eaeh affecting factor. According to initial weights of evaluation index system and evaluation value, the variable weight of assessment indices were determined by variable weights principle. Fuzzy comprehensive evaluation method of bridge structure is a good way to solve the contradiction between the fuzziness of the bridge and the certainty of the arithmetic. Based on the analytic hierarchy process （AHP） , combining cable-stayed bridge structure eharacteristies and according to relevant specification,it established cable-stayed bridge durability condition assessment recursive hierarchical model. Bridge durability fuzzy comprehensive evaluation process was demonstrated through theoretical analysis.