武汉长江大桥长期健康监测和安全评估系统研究  

Study on the Long-term Health Monitoring and Safety Evaluation System for the Wuhan Yangtze River Bridge

作　　者：杜彦良 苏木标[1] 刘玉红[2] 王庆敏[1] 

机构地区：[1]石家庄铁道大学大型结构健康诊断与控制研究所,河北石家庄050043 [2]石家庄铁道大学信息科学与技术学院,河北石家庄050043

出　　处：《铁道学报》2015年第4期101-110,共10页Journal of the China Railway Society

基　　金：铁道部科技研究开发计划(2007G028);国家自然科学基金(51278315)

摘　　要：本文介绍武汉长江大桥长期健康监测和安全评估系统的设计方案、结构体系、主要监测内容、传感器布设安装与防护要求、数据库管理与查询的主要功能、安全评估方法与报警功能。该系统针对这座老桥的具体情况,以桥梁结构整体性能监测及列车信息和环境信息监测为主,采用分片小集中数据采集、星形组网方式,由多种参数、多种传感器和相关调理仪、多测站及两级计算机局域网构成。运行结果表明:监测系统抗干扰能力强、传输速率快、故障率低,工作性能稳定,数据结果准确、可信;全部数据边采边显,波形显示形象逼真,刷新速度快;数据库管理科学,数据查询简便、快捷;安全评估理论和方法可行,可操作性强。The design scheme ,the structure system and main monitoring projects ,the requirements for sensor layout installation and protection ,the main function of the database management and query ,and the methods of the safety evaluation and alarm function of the long‐term health monitoring and safety evaluation system for the Wuhan Yangtze River Bridge are introduced in this paper .In view of the specific circumstances of this old bridge ,the system ,composed of a variety of parameters ,a variety of sensors and related instruments ,many instrument stations and two levels of computer LAN ,mainly focuses on monitoring of the overall bridge struc‐tural performance ,train information and environmental information ,w hile a dispersed ＆quot;small concentration＆quot;data acquisition and star network mode are used in this monitoring system .Operation results show that ：The system demonstrates strong anti‐interference ability ,fast transmission speed ,low failure rate ,stable working performance and accurate and credible monitoring data results .All monitoring data are show n in real time , while waveform display is lifelike ,and refresh speed is fast .With scientific database management ,the data query is simple and convenient .As the theory and the method of the safety evaluation are feasible ,the method is highly operable .

关 键 词：武汉长江大桥 健康监测 安全评估 数据采集 数据查询 

分 类 号：U446[建筑科学—桥梁与隧道工程]