润扬大桥结构健康监测策略
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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.
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 longterm 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.
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 longterm 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.
引文
[1]李爱群,缪长青,李兆霞,等.润扬长江公路大桥结构健康监测系统研究[J].东南大学学报(自然科学版),2003,33(5):544 548.L i A iqun,M iao Changq ing,L i Zhaox ia,et al.Healthm onitoring system for the Runyang Yangtse R iverB ridge[J].Journal of Southeast University(NaturalScience Edition),2003,33(5):544 548.(in Chi-nese)
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[3]李爱群,缪长青,李兆霞,等.润扬长江公路大桥结构安全监测系统研究(一)[R].南京:东南大学土木工程学院,2003.
[4]H jelm stad K D,Shin S D.Dam age detection and as-sessm ent of structures from static response[J].Journalof Eng ineering M echanics,1997,123(6):568 576.
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[6]崔飞,袁万城,史家均.传感器优化布设在桥梁健康监测中的应用[J].同济大学学报,1999,27(2):165169.Cu i Fei,Yuan W ancheng,Shi Jiajun.Application ofoptim al sensor placem ent algorrthm s for health m onito-ring of bridges[J].Journal of Tong ji University,1999,27(2):165 169.(in Chinese)
[7]M anabu Ito.Cab le-supported steel bridges:design prob-lem s and so lution[J].Journal Construct Steel Res,1996,39(1):69 84.
[8]Xu Y L,Ko JM,Yu Z.M odal analysis of tow er-cab lesystem of Tsing M a long suspension bridge[J].Eng i-neering Structures,1997,19(10):857 867.
[9]欧进萍,关新春.土木工程中的智能结构体系研究与发展[J].地震工程与工程振动,1999,19(2):21 28.O u Jinping,Guan X inchun.Research and developm entof sm art structures system in civ il eng ineering[J].Earthquake Eng ineering and Eng ineering V ibration,1999,19(2):21 28.(in Chinese)
[10]周智,欧进萍.用于土木工程的智能监测传感材料性能及比较研究[J].建筑技术,2002,33(4):270272.Zhou Zhi,O u Jinping.Com parative study of sm artsensing m aterial used in the sm art m onitoring of civ i-ling eng ineering[J].Architecture Techno logy,2002,33(4):270 272.(in Chinese)
[2]吴胜东.润扬长江公路大桥建设:第2册———科研试验与勘测[M].北京:人民交通出版社,2005.494529.
[3]李爱群,缪长青,李兆霞,等.润扬长江公路大桥结构安全监测系统研究(一)[R].南京:东南大学土木工程学院,2003.
[4]H jelm stad K D,Shin S D.Dam age detection and as-sessm ent of structures from static response[J].Journalof Eng ineering M echanics,1997,123(6):568 576.
[5]李戈,秦权,董聪.用遗传算法选择悬索桥监测系统中传感器的最优布点[J].工程力学,2000,17(1):25 33.L i Ge,Q in Q uan,Dong Cong.Optim al placem ent ofsensors form onitoring system s on suspension bridges u-sing genetic algorithm s[J].Eng ineering M echanics,2000,17(1):25 33.(in Chinese)
[6]崔飞,袁万城,史家均.传感器优化布设在桥梁健康监测中的应用[J].同济大学学报,1999,27(2):165169.Cu i Fei,Yuan W ancheng,Shi Jiajun.Application ofoptim al sensor placem ent algorrthm s for health m onito-ring of bridges[J].Journal of Tong ji University,1999,27(2):165 169.(in Chinese)
[7]M anabu Ito.Cab le-supported steel bridges:design prob-lem s and so lution[J].Journal Construct Steel Res,1996,39(1):69 84.
[8]Xu Y L,Ko JM,Yu Z.M odal analysis of tow er-cab lesystem of Tsing M a long suspension bridge[J].Eng i-neering Structures,1997,19(10):857 867.
[9]欧进萍,关新春.土木工程中的智能结构体系研究与发展[J].地震工程与工程振动,1999,19(2):21 28.O u Jinping,Guan X inchun.Research and developm entof sm art structures system in civ il eng ineering[J].Earthquake Eng ineering and Eng ineering V ibration,1999,19(2):21 28.(in Chinese)
[10]周智,欧进萍.用于土木工程的智能监测传感材料性能及比较研究[J].建筑技术,2002,33(4):270272.Zhou Zhi,O u Jinping.Com parative study of sm artsensing m aterial used in the sm art m onitoring of civ i-ling eng ineering[J].Architecture Techno logy,2002,33(4):270 272.(in Chinese)
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