Smart Structures and Systems

  • 제11권4호
  • /
  • Pages.387-410
  • /
  • 2013
  • /
  • 1738-1584(pISSN)
  • /
  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Damage identification of isolators in base-isolated torsionally coupled buildings

  • Wang, Jer-Fu (921 Earthquake Museum of Taiwan, National Museum of Natural Science) ;
  • Huang, Ming-Chih (Air Force Institute of Technology) ;
  • Lin, Chi-Chang (Department of Civil Engineering, National Chung Hsing University) ;
  • Lin, Tzu-Kang (Department of Civil Engineering, National Chiao Tung University)
  • 투고 : 2012.02.29
  • 심사 : 2012.11.06
  • 발행 : 2013.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper deals with the damage assessment for isolators of base-isolated building systems considering the torsion-coupling (TC) effect by establishing damage indices. The damage indices can indicate the reduction in lateral stiffness of the isolator story as explicit formulas in terms of modal parameters. In addition, the damage location, expressed in terms of the estimated damage index and eccentricities before and after damage, is also presented. Numerical analysis shows that the proposed algorithms are applicable for general base-isolated multi-story TC buildings. A procedure from the analysis of seismic response to the implementation of damage indices is demonstrated by using a numerical case. A system identification technique is employed to extract modal parameters from seismic responses of a building. Results show that the proposed indices are capable of detecting the occurrence of damage and preliminarily estimating the location of damaged isolator.

키워드

과제정보

연구 과제 주관 기관 : National Science Council of the Republic of China

참고문헌

  1. Allemang, R.J. and Brown, D.L. (1982), "A correlation coefficient for modal vector analysis", Proceedings of the International Modal Analysis Conference & Exhibit, 110-116.
  2. Brasiliano, A., Doz, G.N. and Brito, J.L.V. (2004), "Damage identification in continuous beams and frame structures using the residual error method in the movement equation", Nucl. Eng. Des., 227(1), 1-17. https://doi.org/10.1016/j.nucengdes.2003.07.006
  3. Elenas, A. and Meskouris, K. (2001), "Correlation study between seismic acceleration parameters and damage indices of structures", Eng. Struct., 23(6), 698-704. https://doi.org/10.1016/S0141-0296(00)00074-2
  4. Farrar, C.R. and Jauregui, D.A. (1998), "Comparative study of damage identification algorithms applied to a bridge", Smart Materials and Structures, 7(5), 704-731. https://doi.org/10.1088/0964-1726/7/5/013
  5. Furukawa, T., Ito, M., Izawa, K. and Noori, M.N. (2005), "System identification of base-isolated building using seismic response data", J. Eng. Mech.-ASCE, 131(3), 268-275. https://doi.org/10.1061/(ASCE)0733-9399(2005)131:3(268)
  6. Huang, M.C., Wang, Y.P., Chang, J.R. and Chen, Y.H. (2009), "Physical-parameter identification of base-isolated buildings using backbone curves", J. Struct. Eng.-ASCE, 135(9), 1107-1114. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000047
  7. Juang, J.N. (1997), "System realization using information matrix", J. Guid. Control Dynam, 21(3), 492-500.
  8. Kilar, V. and Koren, D. (2009), "Seismic behaviour of asymmetric base isolated structures with various distributions of isolators", Eng. Struct., 31(4), 910-921. https://doi.org/10.1016/j.engstruct.2008.12.006
  9. Kim, J.T., Ryu, Y.S., Cho, H.M. and Stubbs, N. (2003), "Damage identification in beam-type structures: frequency-based method vs. mode-shape-based method", Eng. Struct., 25(1), 57-67. https://doi.org/10.1016/S0141-0296(02)00118-9
  10. Kim, H.S. and Chun, Y.S. (2004), "Structural damage assessment of building structures using dynamic experimental data", Struct. Des. Tall Spec., 13(1), 1-8. https://doi.org/10.1002/tal.227
  11. Lieven, N.A.J. and Ewins, D.J. (1988), "Spatial correlation of mode shapes, the coordinate modal assurance criterion (COMAC)", Proceedings of the Sixth International Modal Analysis Conference, 690-695.
  12. Lin, C. C., Wang, C. E., Wu, H. W. and Wang, J. F. (2005), "On-line building damage assessment based on earthquake records", Smart Mater. Struct., 14(3), S137-S153. https://doi.org/10.1088/0964-1726/14/3/017
  13. Ndambi, J.M., Vantomme, J. and Harri, K. (2002), "Damage assessment in reinforced concrete beams using eigenfrequencies and mode shapes derivatives", Eng. Struct., 24(4), 501-515. https://doi.org/10.1016/S0141-0296(01)00117-1
  14. Oliveto, N.D., Scalia, G. and Oliveto, G. (2010), "Time domain identification of hybrid base isolation systems using free vibration tests", Earthq. Eng. Struct. D., 39(9), 1015-1038.
  15. Pandey, A.K., Biswas M. and Samman, M.M. (1991), "Damage detection from changes in curvature mode shapes", J. Sound Vib., 145(2), 321-332. https://doi.org/10.1016/0022-460X(91)90595-B
  16. Pandey, A.K. and Biswas, M. (1994), "Damage detection in structures using changes in flexibility", J. Sound Vib., 169(1), 3-17. https://doi.org/10.1006/jsvi.1994.1002
  17. Ryan, K.L. and Chopra, A.K. (2002), "Approximate analysis methods for asymmetric plan base-isolated buildings", Earthq. Eng. Struct. D., 31(1), 33-54. https://doi.org/10.1002/eqe.94
  18. Tena Colunga, A. and Gomez Soberon, L. (2002), "Torsional response of base-isolated structures due to asymmetries in the superstructure", Eng. Struct., 24(12), 1587-1599. https://doi.org/10.1016/S0141-0296(02)00102-5
  19. Tena Colunga, A. and Zambrana Rojas, C. (2006), "Dynamic torsional amplifications of base-isolated structures with an eccentric isolation system", Eng. Struct., 28(1), 72-83. https://doi.org/10.1016/j.engstruct.2005.07.003
  20. Tena Colunga, A. and Escamilla Cruz, J.L. (2007), "Torsional amplifications in asymmetric base-isolated structures", Eng. Struct., 29(2), 237-247. https://doi.org/10.1016/j.engstruct.2006.03.036
  21. Ueng, J.M., Lin, C.C. and Lin, P.L. (2000), "System identification of torsionally-coupled buildings", Comput. Struct., 74(6), 667-686. https://doi.org/10.1016/S0045-7949(99)00073-5
  22. Ventura, C.E., Liam Finn, W.D., Lord, J.F. and Fujita, N. (2003), "Dynamic characteristics of a base isolated building from ambient vibration measurements and low level earthquake shaking", Soil Dynam. Earthq. Eng., 23(4), 313-322. https://doi.org/10.1016/S0267-7261(02)00208-7
  23. Wang, J.F., Lin, C.C. and Yen, S.M. (2007), "A story damage index of seismically-excited buildings based on modal frequency and mode shape", Eng. Struct., 29(9), 2143-2157. https://doi.org/10.1016/j.engstruct.2006.10.018
  24. Yoshimoto, R., Mita, A. and Okada, K. (2005), "Damage detection of base-isolated buildings using multi-input multi-output subspace identification", Earthq. Eng. Struct. D., 34(3), 307-324. https://doi.org/10.1002/eqe.435