期刊文献+

环境温度对斜拉桥动力特性的影响分析 被引量:15

Effect Analysis of Environmental Temperature on Dynamic Properties of Cable-stayed Bridge
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摘要 基于东海大桥健康监测系统测得的一年的环境温度和结构响应的数据,分析环境温度对结构动力特性的影响.首先,基于环境温度的监测数据对环境温度的分布特点进行分析,环境温度沿桥梁纵向具有较强的一致性,沿箱梁截面具有明显的温度梯度.接着对环境温度对结构动力特性的影响机理进行理论分析,并通过实际监测数据进行验证,表明理论分析与实际监测数据具有很好的一致性.最后,基于ARX模型对于环境温度对结构动力特性影响的惯性效应进行分析,表明环境温度的影响具有明显的时间滞后效应,同时基于多点温度能够等效表示环境温度的惯性效应. Based on one-year monitoring data measured by the structural health monitoring system of Donghai Bridge,the effect of environmental temperature on dynamic properties of cable-stayed bridge was analyzed.At first,the distribution characteristics of environmental temperature were analyzed based on the monitoring data of environmental temperature.The environmental temperature was uniformly distributed along the longitudinal direction of bridge and there was also significant temperature gradient in the cross section of box girder.The influencing mechanism of environmental temperature on dynamic properties was theoretically analyzed and was validated by the monitoring data.The results demonstrate that the theoretical analysis is consistent with the monitoring data.Finally the thermal inertial effect of the environmental temperature on dynamic properties was analyzed based on Auto-Regressive model with eXogenous inputs(ARX) model.The results show that there is time lag effect of temperature on dynamic properties and the time lag effect can be equivalently evaluated by multi-point temperature data.
出处 《同济大学学报(自然科学版)》 EI CAS CSCD 北大核心 2011年第4期488-494,共7页 Journal of Tongji University:Natural Science
基金 国家自然科学基金重点项目(50538020) 上海市科委"登山计划"(062112007) 土木工程防灾国家重点实验室自主研究课题(SLDRCE-08-A-05)
关键词 环境温度 模态参数 斜拉桥 健康监测 environmental temperature modal parameters cable-stayed bridge structural health monitoring
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参考文献8

  • 1Sun L M,Sun Z,Dan D H,et al.Large-span bridge and their health monitoring systems in China[C] //Proceeding of 2007International Symposium on Integrated Life-Cycle Design and Management of Infrastructure.Shanghai:Tongji Uniuersity Press,2007:79-95.
  • 2闵志华,孙利民,淡丹辉.影响斜拉桥模态参数变化的环境因素分析[J].振动与冲击,2009,28(10):99-105. 被引量:26
  • 3闵志华,孙利民,淡丹辉.台风下斜拉桥风致振动和动力特性分析[J].同济大学学报(自然科学版),2009,37(9):1139-1145. 被引量:11
  • 4Sohn H,Dzwonczyk M,Erik G,Straser,et al.An experimental study of temperature effect on modal parameters of the Alamosa Canyon Bridge[J].Earthquake Eng Struct Dyn,1999,28:879.
  • 5Xia Y,Hao H,Zanardob G,et al.Long term vibration monitoring of an RC shab:temperature and humidity effect[J].Engineering Structures.2006,28:441.
  • 6Woon C E,Mitchell L D.Temperature-induced variations in structural dynamic characteristicspart ii:analytical[C] // Ancona:SPIE,1996,2868:58-70.
  • 7Baldwin R,North M A.A stress-strain relationship for concrete at high temperatures[C] //Concrete BRE Building Research Series v.1:Practical Studies From the Building Research Establishment.New York:The Construction Press,1978:171-176.
  • 8R(i)os-Moreno G J,Trejo-Perea M,C astaneda-Mirarda R,et al.Modelling temperatura in intelligent buildings by means d autoregressive models[J].Automation in Construction,2007,16(5):713.

二级参考文献14

  • 1闵志华,孙利民,淡丹辉.斜拉桥动力特性变化的环境影响因素分析[C]∥大跨度桥梁结构损伤预警及状态评估研讨会.南京:[s.n.],2008:62-71.
  • 2Abe M,Fujino Y, Yanagihara M, et al, Monitoring of Hakucho suspension bridge by ambient vibration measurement [C]// Proceedings of SPIE Vol. 3995. Newport Beach: [s. n.],2000: 237 - 244.
  • 3Li Q S,Xiao Y Q, Wu J R, et al. Typhoon effects on super-tall buildings[J]. Journal of Sound and Vibration, 2008,313 :581.
  • 4Xu Y L, Zhu L D. Buffeting response of long-span cablesupported bridges under skew winds. Part 2 :case study[J]. Journal of Sound and Vibration, 2005,281 : 675.
  • 5上海防汛信息中心,0716号台风“罗莎”台风总结[EB/OL].[2007 - 10 - 20]. http://www.shanghaiwater.gov. cn.
  • 6埃米尔.希缪,罗伯特.H.斯坎伦.风对结构的作用[M].第2版.刘尚培,项海帆,谢霁明译.上海:同济大学出版社,1992.
  • 7Littler J D. An assessment of some of the different methods for estimating damping from full-scale testing[J]. Journal of Wind Engineering and Industrial Aerodynamics, 1995,57:179.
  • 8Sun L M, Sun Z, Dan D H,et al. Large-span bridge and their health monitoring systems in China[ C]. //Proceeding of 2007 International Symposium on Integrated Life-Cycle Design and Management of Infrastructure, 2007:79 - 95.
  • 9Peeters B, De R G. One-year monitoring of the Z24-Bridge: environmental effects versus damage events [ J ]. Earthquake Eng Struet. Dyn, 2001,30.149 - 171.
  • 10Sohn H, Dzwonczyk M, Straser E G, et al. An experimental study of temperature effect on modal parameters of the Alamosa Canyon Bridge [ J ], Earthquake Eng. Struct. Dyn, 1999,28 : 879 - 897.

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