Earthquakes and Structures

  • 제6권4호
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  • Pages.351-373
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  • 2014
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Response of non-structural components mounted on irregular RC buildings: comparison between FE and EC8 predictions

  • Aldeka, Ayad B. (School of Civil Engineering, University of Birmingham) ;
  • Chan, Andrew H.C. (School of Science, Information Technology and Engineering, Federation University Australia) ;
  • Dirar, Samir (School of Civil Engineering, University of Birmingham)
  • 투고 : 2013.08.23
  • 심사 : 2013.12.17
  • 발행 : 2014.04.30
⟨ 이전 논문 다음 논문 ⟩

초록

This paper investigates the seismic response of lightweight acceleration-sensitive non-structural components (NSCs) mounted on irregular reinforced concrete (RC) primary structures (P-structures) using non-linear dynamic finite element (FE) analysis. The aim of this paper is to study the influence of NSC to P-structure vibration period ratio, peak ground acceleration, NSC to P-structure height ratio, and P-structure torsional behaviour on the seismic response of the NSCs. Representative constitutive models were used to simulate the behaviour of the RC P-structures. The NSCs were modelled as vertical cantilevers fixed at their bases with masses on the free ends and varying lengths so as to match the frequencies of the P-structures. Full dynamic interaction is considered between the NSCs and P-structures. A set of 21 natural and artificial earthquake records were used to evaluate the seismic response of the NSCs. The numerical results indicate that the behaviour of the NSCs is significantly influenced by the investigated parameters. Comparison between the FE results and Eurocode (EC8) predictions suggests that EC8 underestimates the response of NSCs mounted on the flexible sides of irregular RC P-structures when the fundamental periods and heights of the NSCs match those of the P-structures. The perceived cause of this discrepancy is that EC8 does not take into account the amplification in the dynamic response of NSCs induced by the torsional behaviour of RC P-structures.

키워드

참고문헌

  1. Agrawal, A. and Datta, T. (1997), "Behavior of secondary system attached to a torsionally coupled primary system", Eur. Earthq. Eng., 11, 47-53.
  2. Agrawal, A. and Datta, T. (1998), "Seismic response of a secondary system mounted on a torsionally coupled non-linear primary system", J. Earthq. Eng., 2, 339-356.
  3. Agrawal, A.K. (1999), "Non-linear response of light equipment system in a torsional building to bi-directional ground excitation", Shock Vib., 6, 223-236. https://doi.org/10.1155/1999/948265
  4. Aldeka, A., Chan, A. and Dirar, S. (2012), "Finite element modelling of non-structural components mounted on a torsionally multi-storey building", Proceedings of the 20th UK Conference of the Association for Computational Mechanics in Engineering (ACME2012), Manchester, United Kingdom, March.
  5. Aldeka, A., Chan, A. and Dirar, S. (2013a), "Finite element modelling of non-structural components mounted on irregular RC buildings", Proceedings of the International Conference on Computational Mechanics (CM13), Durham, United Kingdom, March.
  6. Aldeka, A., Chan, A. and Dirar, S. (2013b), "Effects of torsion on the behaviour of non-structural components mounted on irregular reinforced concrete multi-storey buildings", Proceedings of the 4th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Kos Island, Greece, June.
  7. Chandler, A. and Hutchinson, G. (1986), "Torsional coupling effects in the earthquake response of asymmetric buildings", Eng. Struct., 8, 222-236. https://doi.org/10.1016/0141-0296(86)90030-1
  8. Chaudhuri, S.R. and Villaverde, R. (2008), "Effect of building nonlinearity on seismic response of nonstructural components: a parametric study", J. Struct. Eng. - ASCE, 134, 661-670. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:4(661)
  9. Chen, Y. and Soong, T. (1988), "Seismic response of secondary systems", Eng. Struct., 10, 218-228. https://doi.org/10.1016/0141-0296(88)90043-0
  10. EC8 (2004), EN 1998-1 Eurocode 8, Design of structures for earthquake resistance, Part 1: General rules, seismic actions and rules for buildings, European Committee for Standardization Brussels, Belgium.
  11. ESD European Strong motion Database, http://www.isesd.cv.ic.ac.uk/.
  12. Fajfar, P., Marusic, D. and Perus, I. (2005), "Torsional effects in the pushover-based seismic analysis of buildings", J. Earthq. Eng., 9, 831-854.
  13. Graves, H. and Morante, R. (2006), Recommendations for revision of seismic damping values in Regulatory Guide 1.61, U.S. Nuclear Regulatory Commission Office of Nuclear Regulatory Research Washington, DC 20555-000.
  14. Hart, G.C., Lew, M. and DiJulio, R.M. (1975), "Torsional response of high-rise buildings", J. Struct. Div., 101, 397-416.
  15. Iervolino, I., Maddaloni, G. and Cosenza, E. (2009), "A note on selection of time-histories for seismic analysis of bridges in Eurocode 8", J. Earthq. Eng., 13, 1125-1152. https://doi.org/10.1080/13632460902792428
  16. Iervolino, I., Galasso, C. and Cosenza, E. (2010), "REXEL: computer aided record selection for code-based seismic structural analysis", Bull. Earthq. Eng., 8, 339-362. https://doi.org/10.1007/s10518-009-9146-1
  17. Kreslin, M. and Fajfar, P. (2010), "Seismic evaluation of an existing complex RC building", Bull. Earthq. Eng., 8, 363-385. https://doi.org/10.1007/s10518-009-9155-0
  18. Mander, J., Priestley, M.N. and Park, R. (1988), "Theoretical stress-strain model for confined concrete", J. Struct. Eng. - ASCE, 114, 1804-1826. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804)
  19. Menegotto, M. and Pinto, P.E. (1973), "Method of analysis for cyclically loaded RC plane frames including changes in geometry and non-elastic behaviour of elements under combined normal force and bending", Symposium on the Resistance and Ultimate Deformability of Structures acted on by well defined loads, International Association for Bridge and Structural Engineering, Zurich, Switzerland.
  20. MIDAS Gen (2012), Analysis manual, version 3.1, http://www.MidasUser.com/.
  21. Mohammed, H.H., Ghobarah, A. and Aziz, T.S. (2008), "Seismic response of secondary systems supported by torsionally yielding structures", J. Earthq.Eng., 12, 932-952. https://doi.org/10.1080/13632460701758588
  22. Negro, P., Mola, E., Molina, F.J. and Magonette, G.E. (2004), "Full-scale PSD testing of a torsionally unbalanced three-storey non-seismic RC frame", Proceedings of 13th WCEE, 2004. 13th World conference on Earthquake Engineering, Vancouver, Canada, No. 968.
  23. Oropeza, M., Favez, P. and Lestuzzi, P. (2010), "Seismic response of nonstructural components in case of nonlinear structures based on floor response spectra method", Bull. Earthq. Eng., 8, 387-400. https://doi.org/10.1007/s10518-009-9139-0
  24. Paz, M. (1994), International handbook of earthquake engineering codes, programs, and examples, Springer.
  25. Phan, L.T. and Taylor, A.W. (1996), "State of the art report on seismic design requirements for nonstructural building components", Report NISTIR 5857, National Institute of Standards and Technology, Gaithersburgh, MD.
  26. Rozman, M. and Fajfar, P. (2009), "Seismic response of a RC frame building designed according to old and modern practices", Bull. Earthq. Eng., 7, 779-799. https://doi.org/10.1007/s10518-009-9119-4
  27. Sackman, J.L. and Kelly, J.M. (1979), "Seismic analysis of internal equipment and components in structures", Eng. Struct., 1, 179-190. https://doi.org/10.1016/0141-0296(79)90045-2
  28. Seismosoft (2009), SeismoMatch version 2.1, http://www.seismosoft.com/.
  29. SIMQKE (1976), User manual, NISEE software library, University of California, Berkeley, USA.
  30. Stefano, D.M. and Pintucchi, B. (2010), "Predicting torsion-induced lateral displacements for pushover analysis: influence of torsional system characteristics", Earthq. Eng.Struct. Dyn., 39, 1369-1394.
  31. Villaverde, R. (1997), "Seismic design of secondary structures: state of the art", J. Struct. Eng. - ASCE, 123, 1011-1019. https://doi.org/10.1061/(ASCE)0733-9445(1997)123:8(1011)
  32. Whittaker, A. and Soong, T. (2003), "An overview of nonstructural components research at three US earthquake engineering research centers", Proceedings of ATC-29-2 Seminar on Seismic Design, Performance, and Retrofit of Nonstructural Components in Critical Facilities, ATC-29-2 Report, Applied Technology Council, Redwood City, California.
  33. Yang, Y.B. and Huang, W.H. (1993), "Seismic response of light equipment in torsional buildings", Earthq. Eng. Struct. Dyn., 22, 113-128. https://doi.org/10.1002/eqe.4290220203
  34. Yang, Y.B. and Huang, W.H. (1998), "Equipment-structure interaction considering the effect of torsion and base isolation", Earthq. Eng. Struct. Dyn., 27, 155-171. https://doi.org/10.1002/(SICI)1096-9845(199802)27:2<155::AID-EQE723>3.0.CO;2-V

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