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基于层次分析法的斜拉桥安全风险评估研究

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项目以广西盘龙柳江大桥斜拉桥为研究对象,利用层次分析法(Analytic Hierarchy Process,AHP)对其结构安全风险进行了系统性的评估.斜拉桥由于其复杂的结构形式和多样的外部环境影响,面临多重安全风险.为此,本文构建了针对该桥梁的层次分析结构,将风险因素划分为结构设计、材料性能和环境影响等关键准则.通过专家打分和判断矩阵构建,计算出各风险因素的相对权重,并进行一致性检验.综合评估结果表明,斜拉索疲劳和断裂风险、桥塔稳定性以及主梁的抗弯抗扭性能是影响盘龙柳江大桥斜拉桥安全的主要因素.进一步提出了相应的安全管理对策与优化策略,包括加强材料选择与设计优化、建立动态风险评估与预警机制、应用数字孪生技术等,以确保桥梁的长期稳定运营.研究结果不仅验证了层次分析法在桥梁安全风险评估中的有效性,还为类似桥梁的设计、维护及管理提供了理论支持和实践指导.
Research on Safety Risk Assessment of Cable-stayed Bridge Based on Analytic Hierarchy Process
Taking the Liujiang cable-stayed bridge in Panlong,Guangxi as the research object,the structural safety risk of the bridge is systematically evaluated by using the analytic hierarchy process(AHP).Cable-stayed bridge is faced with multiple safety risks due to its complex structure and various external environment.For this reason,the hierarchy analysis structure is constructed,and the risk factors are divided into the key criteria such as structural design,material performance and environmental impact.The relative weight of each risk factor was calculated by expert rating and judgment matrix,and the consistency was tested.The comprehensive evaluation results show that the fatigue and fracture risk of stay cables,the stability of pylon and the bending and torsion resistance of girder are the main factors affecting the safety of Panlong Liujiang Bridge.The corresponding safety management countermeasures and optimization strategies are put forward,including strengthening material selection and design optimization,establishing dynamic risk assessment and early warning mechanism,and applying digital twinning technology,etc.,to ensure the long-term stable operation of the bridge.The results not only validate the effectiveness of AHP in bridge safety risk assessment,but also provide theoretical support and practical guidance for the design,maintenance and management of similar bridges.

cable-stayed bridgeanalytic hierarchy processrisk assessmentstructural safetybridge management

廖国威、洪泽水、梅前前、廉维宾、吴多杰

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中铁大桥局集团有限公司,湖北 武汉 430000

斜拉桥 层次分析法 风险评估 结构安全 桥梁管理

2024

交通节能与环保
人民交通出版社股份有限公司,交通运输部公路科学研究院

交通节能与环保

影响因子:0.286
ISSN:1673-6478
年,卷(期):2024.20(z2)