期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

Reduced order observer based identification of base isolated buildings 被引量：1

Reduced order observer based identification of base isolated buildings
下载PDF
导出
摘要 The objective of this study is to identify system parameters from the recorded response of base isolated buildings,such as USC hospital building,during the 1994 Northridge earthquake.Full state measurements are not available for identification.Additionally,the response is nonlinear due to the yielding of the lead-rubber bearings.Two new approaches are presented in this paper to solve the aforementioned problems.First,a reduced order observer is used to estimate the unmeasured states.Second,a least squares technique with time segments is developed to identify the piece-wise linear system properties.The observer is used to estimate the initial conditions needed for the time segmented identification.A series of equivalent linear system parameters are identified in different time segments.It is shown that the change in system parameters,such as frequencies and damping ratios,due to nonlinear behavior of the lead-rubber bearings,are reliably estimated using the presented technique.It is shown that the response was reduced due to yielding of the lead-rubber bearings and period lengthening. The objective of this study is to identify system parameters from the recorded response of base isolated buildings,such as USC hospital building,during the 1994 Northridge earthquake.Full state measurements are not available for identification.Additionally,the response is nonlinear due to the yielding of the lead-rubber bearings.Two new approaches are presented in this paper to solve the aforementioned problems.First,a reduced order observer is used to estimate the unmeasured states.Second,a least squares technique with time segments is developed to identify the piece-wise linear system properties.The observer is used to estimate the initial conditions needed for the time segmented identification.A series of equivalent linear system parameters are identified in different time segments.It is shown that the change in system parameters,such as frequencies and damping ratios,due to nonlinear behavior of the lead-rubber bearings,are reliably estimated using the presented technique.It is shown that the response was reduced due to yielding of the lead-rubber bearings and period lengthening.
作者 Satish Nagarajaiah Prasad Dharap
机构地区 Dept.of Civil and Env.Eng. Dept.of Civil and Env.Eng.
出处 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2003年第2期237-244,共8页 地震工程与工程振动（英文刊）
基金 grant NSF-CMS-9996290
关键词 use hospital building base isolation least squares system identification time segments reduced order observer Northridge earthquake use hospital building base isolation least squares system identification time segments reduced order observer Northridge earthquake
分类号 TU352.12 [建筑科学—结构工程]
  • 相关文献

参考文献18

  • 1[1]Asher JW, Hoskere S, Ewing R, Van Volkinburg DR,Mayes R and Button M (1995), "Seismic Performance of the Base-isolated USC University Hospital in the 1994 Northridge Earthquake," Proc. PVP-Vol. 319,ASME Press. Vessels & Piping Conf, Hawaii, 147-154.
  • 2[2]Beck JL and Jenning Paul C (1980), "Structural Identification Using Linear Models and Earthquake Records," Earthquake Engineering and Structural Dynamics, 8: 145-160.
  • 3[3]Brogan WL (1991), Modern Control Theory, 3rd ed.,Prentice Hall, N. J.
  • 4[4]DIS (1989), "Test Results for Seismic Isolation Bearings for The USC University Hospital Building," Report No.5822-68, Dynamic Isolation Systems (DIS) Inc., CA.
  • 5[5]Ghanem R and Shinozuka M (1995), "Structural-system Identification. I: Theory," J. Eng. Mech. ASCE, 121(2):255-264.
  • 6[6]Kelly JM (1997), Earthquake Resistant Design with Rubber, 1st ed. Springer Verlag, NY.
  • 7[7]Li Y and Mau T (1991 ), "A Case Study of MIMO System Identification Applied to Building Seismic Records,"Earthquake Engineering and Structural Dynamics, 20:1045-1064.
  • 8[8]Lin BC and Papageorgiou AS (1989), "Demonstration of Torsional Coupling Caused By Closely Spaced Periods1984 Morgan Hill Earthquake Response of Santa ClaraCounty Building," Earthquake Spectra, 5(3): 354-372.
  • 9[9]Ljung L (1987), System Identification, Prentice Hall, N.J.Marmarelis PZ and Udwadia FE (1976), "The Identification of Building Structural System Ⅱ: The Nonlinear Case," Bull. Seism. Soc. Am., 66:153-171.
  • 10[10]Nagarajaiah S and Sun X (2000a), "Response of baseisolated Buildings in Northridge Earthquake," .J. of Struct. Eng., ASCE, 126(10): 2035-2054.

同被引文献12

  • 1B. H. Koh,S. Nagarajaiah,M. Q. Phan.Reconstructing structural changes in a dynamic system from experimentally identified state-space models[J].Journal of Mechanical Science and Technology.2008(1)
  • 2Giovanni Naldi,Paolo Venini.Wavelet Analysis of Structures: Statics, Dynamics and Damage Identification[J].Meccanica.1997(3)
  • 3Al-Khalidy A,Noori M,Hou Z,Carmona R."Yamamoto S,Masuda A and Sone A (1997),A Study of Health Monitoring Systems of Linear Structures Using Wavelet Analysis,"[].Approx Methods in the Design and Analysis of Pressure Vessels and Piping Components.
  • 4Basu B."Assessment of Structural Integrity via Wavelet Based Time-frequency Analysis of Vibration Signals,"[].International Journal of Materials and Structural Integrity.2007
  • 5Dharap P,Koh BH,Nagarajaiah S."Structural Health Monitoring Using ARMarkov Observers,"[].Journal of Intelligent Material Systems and Structures.2006
  • 6Goggins J,Broderck BM,Basu B,Elghazouli AY."Investigation of Seismic Response of Braced Frames Using Wavelet Analysis,"[].Structural Control and Health Monitoring.2006
  • 7Kijewski-Correa T,Kareem A."Performance of Wavelet Transform and Empirical Mode Decomposition in Extracting Signals Embedded in Noise,"[].Journal of engineering mechanicsASCE.2007
  • 8Koh BH,Nagarajaiah S,Phan MQ."Direct Identifi cation of Structural Damage Through Kronecker Product Method,"[].Journal of Mechanical Science and Technology.2008
  • 9Kyprianou A,Staszewski WJ."On the Cross Wavelet Analysis of the Duffi ng Oscillator,"[].Journal of Sound and Vibration.1999
  • 10Lardies J,Gouttebroze S."Identification of Modal Parameters Using the Wavelet Transform,"[].International Journal of Mechanical Science.2000

引证文献1

二级引证文献13

Earthquake Engineering and Engineering Vibration
2003年 第2期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部