一种新型在役桥梁风险评估方法  

A New Risk Assessment Method for Bridges in Service

作　　者：黄祖慰 余颜江 李东晋 冉芸诚 HUANG Zuwei;YU Yanjiang;LI Dongjin;RAN Yuncheng(Highway Monitoring&Response Center,Ministry of Transport of the PRC,Beijing 100029;China Merchants Chongqing Highway Engineering Testing Center Co.,Ltd.,Chongqing 400067)

机构地区：[1]交通运输部路网监测与应急处置中心,北京100029 [2]招商局重庆公路工程检测中心有限公司,重庆400067

出　　处：《公路交通技术》2024年第5期150-157,共8页Technology of Highway and Transport

摘　　要：为提高桥梁运营期风险评估的准确性,基于作业条件危险性评价(LEC)法,提出了一种新型桥梁风险评估方法——LKC法,即采用层次分析法引入了桥梁重要性系数K以替代修正作业条件危险性评价法中暴露程度指标E,并通过采用LKC法对2座在役桥梁进行风险评估。结果表明,采用LKC法对在役桥梁进行风险评估可显著提升不同桥梁相同风险的评估准确度,有效提高在役桥梁风险评估客观性。In order to improve the accuracy of risk assessment during bridge operation,a new bridge risk assessment method,LKC method,is proposed based on the operational condition risk assessment(LEC) method.In other words,the bridge importance coefficient K is introduced by the analytic hierarchy process(AHP) to replace the exposure degree index E in the modified operational condition risk assessment method.The LKC method was used to evaluate the risk of 2 bridges in service.The results show that the LKC method can significantly improve the accuracy of the same risk assessment for different bridges and effectively improve the objectivity of the risk assessment for bridges in service.

关 键 词：桥梁 运营期 风险评估 层次分析法 

分 类 号：U446[建筑科学—桥梁与隧道工程]