RESEARCH ON CONDITION EVALUATION METHOD OF URBAN RAIL TRANSIT BRIDGE

摘要

This paper first introduces the current research on Evaluation of bridge state field.Taking into account the shortcomings of the existing norms and traditional analysis methods and the structure's characteristics of urban rail transit bridge,the condition of urban rail transit bridge is assessed with the uncertain type Analytic Hierarchy Process (AHP).The uncertain judgment matrices in interval number is built ftrstly,computing the indies weights with the least square method,then based on the score by an expert,stepwise calculating the score of subordination index technical condition,and then the Bridge Condition Index (BCI) will be obtained.Finally,taking an urban rail transit bridge for example,the integrated condition index BCI was calculated.The results illustrated the validity and practicality of the proposed methods.