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润扬大桥结构健康监测策略
引用本文:缪长青,李爱群,韩晓林,李兆霞,吉林,杨玉冬.润扬大桥结构健康监测策略[J].东南大学学报(自然科学版),2005,35(5):780-785.
作者姓名:缪长青  李爱群  韩晓林  李兆霞  吉林  杨玉冬
作者单位:1. 东南大学土木工程学院,南京,210096
2. 江苏省长江公路大桥建设指挥部,镇江,212002
摘    要:对建立大跨桥梁结构健康监测系统的关键问题--大跨桥梁结构健康监测策略进行了分析研究,阐述了大跨桥梁结构健康监测项目的选择依据、传感器优化布设的原则与主要依据、传感器选择的原则等.提出了综合考虑大桥的结构特点和各个方面对系统功能的要求,通过费用-效益比分析,确定长期监测和周期检测内容的项目选择原则.关于传感器的布设,提出了遵循从状态评估的需要出发,以有效和经济为目标,使测点能够发挥最大效应的原则,综合结构安全评估、传感器布设优化理论等因素进行优化布设的方法.在有限元分析的基础上,应用遗传算法进行了润扬大桥结构健康监测系统振动和应变传感器优化布置的理论分析.然后进行了润扬大桥结构健康监测传感器系统的总体设计.

关 键 词:结构健康监测  传感器  优化布置  有限元模型
文章编号:1001-0505(2005)05-0780-06
收稿时间:04 12 2005 12:00AM
修稿时间:2005-04-12

Monitor strategy for the structural health monitoring system of Runyang Bridge
Miao Changqing,Li Aiqun,Han Xiaolin,Li Zhaoxia,Ji Lin,Yang Yudong.Monitor strategy for the structural health monitoring system of Runyang Bridge[J].Journal of Southeast University(Natural Science Edition),2005,35(5):780-785.
Authors:Miao Changqing  Li Aiqun  Han Xiaolin  Li Zhaoxia  Ji Lin  Yang Yudong
Institution:1 College of Civil Engineering, Southeast University, Nanjing 210096, China;2 Jiangsu Construction Headquarters of the Yangtse River Bridge, Zhenjiang 212002, China
Abstract:A key problem in establishing the health monitoring system for large span bridge structures, namely the strategy for the health monitoring of large span bridges, is analyzed and investigated. The basis of selecting the monitoring items, the principle and foundation of the optimizing arrangement for transducers, and the policy for the selection of transducers are presented. In selecting the monitoring items, it is proposed that the long-term and periodic inspection contents are determined by analyzing the ratio of expense to benefit based on a comprehensive consideration for the structural characteristics of the bridge as well as the system function requirement from various aspects. With regard to the arrangement for transducers, the optimizing technique of making the measurement points bring the maximum effects by colligating the theories of structural safety evaluation and sensor arrangement optimization, so as to satisfy the requirement of status evaluation and achieve a goal of efficiency and economy, is presented. Based on the finite element analysis for the Runyang Yangtze River Bridge, the simulation analyses for the vibration of structural health monitoring system and the optimizing layout of strain transducers are performed using the genetic arithmetic. An overall plan of the transducer systems used for the health monitoring of the Runyang Bridge is then conducted.
Keywords:structural health monitoring  sensor  optimum placement  finite element model
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