Detection and Evaluation of 30 m Span Steel-concrete Composite Beam of Chengdu-Nanchong Rucheng Expressway
With the rapid development of the national economy,expressway bridges are facing challenges such as large traffic flow,heavy-duty vehicles,and fast speed.Higher requirements are put forward for the structural safety and durability of expressway bridg-es.Therefore,the daily detection,analysis and evaluation of expressway bridges are particularly important.Taking the 30 m span steel-concrete composite girder bridge of Chengdu-Nanchong Rucheng Expressway as the research object,the influencing factors of bridge technical condition are analyzed and graded,and the evaluation system of bridge deterioration characteristic index is established.The fuzzy comprehensive evaluation method is used to systematically analyze and evaluate the technical condition grade of the bridge.Ac-cording to the principle of large membership degree,it is concluded that the technical condition grade of the bridge is grade Ⅱ,and the normal and safe use can be realized only by simple reinforcement and maintenance.
expressway bridgesteel-concrete composite beamfuzzy comprehensive evaluation methodtechnical status
万方数据
维普
