OPTIMAL MAINTENANCE STRATEGIES FOR EXISTING BRIDGES BASED ON RELIABILITY ANALYSIS AND GENETIC ALGORITHM
Bridge deterioration caused by severe service conditions and deferred maintenance activities is growing significantly in China. It is important to develop rational multi-criteria evaluation methods and to carry out appropriate activities for deteriorating bridge structures so as to maintain a required level of performance throughout the whole life cycle. In this article, a GA-based optimization method in conjunction with the time-dependent reliability analysis on ultimate limit state and serviceability limit state is proposed to obtain optimal maintenance strategies for the existing bridges. The study involves the determination of target reliability level, time-dependent reliability analysis, bridge maintenance and retrofit activities, and solution of a GA-based multi-objective combinatorial optimization problem. The effectiveness of the integrated method for optimal maintenance strategies is verified through an investigation on a T-beam RC bridge with a span length of 16m.
Ezisting bridge optimal maintenance strategies reliability genetic algorithm
Ban-Fu Yan Li Wu
College of Civil Engineering,Hunan University,Changsha 410082,P. R. China
国际会议
长沙
英文
237-243
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）