BRIDGE CONDITION RATING MODEL USING EIGENVECTOR APPROACH AND FUZZY LOGIC
An multiple-layer fuzzy assessment model is proposed in this paper to evaluate thesituation of existing reinforced concrete (RC) bridges on the base of eigenvector (priorityvector) approach and fuzzy logic. The multi-attributive decision making (MADM) modelbased on a priority vector of the constituent elements of the component and fuzzy operationsare adopted to give a more realistic condition rating of bridges. The capabilities of computerprogram developed based on the proposed model,which incorporates the specific advantagesof prioritization,optimal interval based membership functions and Fuzzy Weighted Average(FWA) technique are demonstrated through a case study. Environmental effect is consideredin the proposed model because its indicator role includes not only the deterioration degree ofconcrete itself due to environment load,but also the crisis of reinforcement corrosion andmaterial damage under rigorous environment. The method of the priority setting of relativeimportance between elements is an open system dependent on not only the experience ofinspectors and experts but also the major reasons of concrete deterioration and reinforcementcorrosion. The proposed methodology would help decision makers and bridge engineers tomake systematic judgment and formulate methodical steps toward retrofitting,rehabilitation,or demolition of a bridge in future years.
analytic hierarchy process(AHP) condition rating optimal interval membership function existing reinforced concrete bridge
Xiao-zhou WANG Hai-long WANG Yu-xi ZHAO Wei-liang JIN
Department of Civil Engineering,Zhejiang University,Hangzhou 310027,PR China Eigenvector (priority vector) approach
国际会议
The International Conference on Durability of Concrete Structures(2008年混凝土结构耐久性国际学术会议)
杭州
英文
1066-1074
2008-11-01（万方平台首次上网日期，不代表论文的发表时间）