大跨径轨道专用悬索桥的设计及施工风险评价  

Risk Assessment of Design and Construction for Long Span Track Exclusive Suspension Bridge

作　　者：郝付军[1,2] 宋一凡 HAO Fujun;SONG Yifan(Shaanxi Railway Institute,Weinan 714099,China;Highway College,Chang'an University,Xi'an 710064,China)

机构地区：[1]陕西铁路工程职业技术学院,陕西渭南714099 [2]长安大学公路学院,陕西西安710064

出　　处：《甘肃科学学报》2022年第4期70-77,共8页Journal of Gansu Sciences

基　　金：国家自然科学基金(51608080);中央高校基本科研业务费资助项目(310821161118)。

摘　　要：为准确评估大跨径悬索桥施工期间的风险等级,保障施工安全,综合使用层次分析法和P×C法对鹅公岩轨道专用桥设计及施工期间的风险进行了评估。在对鹅公岩轨道专用桥设计风险分析的基础上,首先利用层次分析法构建了桥梁上部结构施工风险评价体系,随后采用专家法分析了风险隶属度,最后以P×C法对鹅公岩轨道专用桥的上部结构进行了施工风险评估。评估结果显示鹅公岩轨道专用桥上部结构的施工风险评价分为65.46分,表明该桥上部结构施工风险等级为三级,为施工期间采取合理的保护措施提供了依据。经施工验证,桥梁施工过程中总体风险与预测接近,证明采用的方法可行,能够快速、准确地对悬索桥施工风险进行预测。In order to accurately evaluate the risk level of long-span suspension bridge during construction and ensure the construction safety,the AHP and P×C method were used to evaluate the risk of Egongyan track exclusive bridge during design and construction.Based on the analysis of the design risk of Egongyan track exclusive bridge,the construction risk evaluation system of the superstructure of the bridge was constructed by using the AHP method,and then the risk membership degree was analyzed by using the expert method,and finally the construction risk of the superstructure of Egongyan track exclusive bridge was evaluated by using the P×C method.The evaluation results showed that the construction risk evaluation score of the superstructure of Egongyan track exclusive bridge was 65.46,which indicated that the construction risk level of the superstructure of the bridge was grade 3,and would provided the basis for taking reasonable protection measures during the construction.Through the construction verification,the overall risk of the bridge construction process was close to the prediction,which proved that the method was feasible and can quickly and accurately predict the construction risk of suspension bridge.

关 键 词：悬索桥 自锚式 层次分析法 施工风险评价 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]