在役跨海系杆拱桥结构安全的可拓预警模型  

Study on an early-warning model based on extensive sets for the structure safety of ICTB

作　　者：李涛 黄亚娥 钱亚 LI Tao;HUANG Ya’e;Qian Ya(School of Naval Architecture and Maritime, University of Zhejiang Ocean , Zhoushan 316022,China;Shanghai Urban Construction Vocational College, Shanghai 200438,China)

机构地区：[1]浙江海洋大学船舶与海运学院,浙江舟山316022 [2]上海城建职业学院,上海200438

出　　处：《湘潭大学学报（自然科学版）》2022年第1期116-126,共11页Journal of Xiangtan University(Natural Science Edition)

基　　金：舟山市科技计划项目(2020C21013);中交集团项目(ZJLJGLTJ5A3JSFW2019011)。

摘　　要：为了科学准确评价在役跨海系杆拱桥的结构安全状况,该文建立了在役跨海系杆拱桥结构安全可拓预警模型.结合国家相关规范及对实体工程的健康检测数据分析,构建了在役跨海系杆拱桥结构安全的可拓预警指标体系,采用G1法确定结构安全三级指标的权重,利用可拓集中综合关联度分析方法,研究了浙江省岱山岛江南大桥的结构安全状况,用论文构建模型计算得到最终可拓综合关联度K(x)=-0.0185,研究结果表明该跨海系杆拱桥的结构安全预警等级为一级,无须采取维修加固措施,验证了该结构安全预警可拓模型的科学性.该研究不仅可为跨海桥梁营运管理的业主单位提供技术支持,也为沿海在役桥梁的结构安全状况评价提供了理论依据.An early-warning model was established in this study for the purpose of scientifically and accurately evaluating the structure safety conditions of In-service Cross-sea Tied-arch bridges(ICTB).An early-warning index system for the structure safety of ICTB was constructed by combining the relevant national regulations and an analysis of the health inspection data results of actual engineering projects.Then,the G1 method was adopted to determine the weights of the Grade III indicators in the constructed early-warning system.In addition,an analysis method was applied which involved comprehensive correlation in the extensive-set theory in order to examine the structure safety conditions of the Jiangnan Bridge on Daishan Island,Zhejiang Province.The final extension comprehensive correlation K(x)=-0.0185 was calculated using the model constructed in this study.The results revealed that the structure safety early-warning level of the investigated bridge was Grade I,which suggested that there was no need to make maintenance and reinforcement measures.These findings verified the scientific value of the proposed early-warning model.The results obtained in this study not only provided technical support for business proprietors overseeing the operation and management of cross-sea bridges,but also supported a theoretical basis for the evaluations of the operational safety of in-service bridges located in coastal areas.

关 键 词：跨海系杆拱桥 结构安全预警 可拓集 

分 类 号：X951[环境科学与工程—安全科学]