Mitigation of the Seismic Response of Structures with Vertical Stiffness and Strength Irregularity Using Supplemental Dampers

Chapter
Part of the Geotechnical, Geological and Earthquake Engineering book series (GGEE, volume 24)

Abstract

As part of the Canadian Seismic Research Network’s (CSRN) newly developed performance spectra-based design methodology for buildings with supplemental damping, this chapter proposes an index for quantifying the degree of vertical stiffness/strength irregularity based on elastic modal properties. Using this index, a damper distribution technique is developed to correct irregularities while adding damping to control the seismic response to meet a given set of performance targets. Nonlinear time-history analyses of simplified 4-, 9- and 15-storey irregular shear buildings with hysteretic and linear viscous and viscoelastic dampers are used to verify and to establish the limits of application of the proposed distribution technique. It is found that the procedure offers simplicity and sufficient accuracy for design purposes if the structure meets the criteria identified in this study. Retrofit examples using the proposed methodology are also presented for a 9-storey irregular steel moment frame in Canada.

Keywords

Mode Shape Base Shear Base Frame Viscous Damper Shear Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Al-Ali AK, Krawinkler H (1998) Effects of vertical Irregularities on seismic behavior of building structures. Report 130, Stanford UniversityGoogle Scholar
  2. Athanassiadou CJ (2007) Seismic performance of R/C plane frames irregular in elevation. Eng Struct 30:1250–1261CrossRefGoogle Scholar
  3. Charette KG (2009) Effets des Mouvements Sismiques sur les Structures en Acier de la Categorie des Constructions Conventionnelles. Dissertation, Ecole Polytechnique de Montreal (in French)Google Scholar
  4. Chintanapakdee C, Chopra AK (2003) Seismic response of vertically irregular frames: response history and modal pushover analyses. J Struct Eng 130:1177–1185CrossRefGoogle Scholar
  5. Christopoulos C, Filiatrault A (2006) Principles of passive supplemental damping and seismic isolation. Viscous and viscoelastic dampers. IUSS Press, PaviaGoogle Scholar
  6. Das S, Nau JM (2003) Seismic design aspects of vertically irregular reinforced concrete buildings. Earthq Spectra 19:455–477CrossRefGoogle Scholar
  7. Guo JWW, Christopoulos C (2011) Performance spectra-based design method for structures with supplemental damping. Research report, University of TorontoGoogle Scholar
  8. Magliulo G, Ramasco R, Realfonzo R (2002) A critical review of seismic code provisions for vertically irregular frames. In: Proceeding of the 3rd European workshop on the seismic behaviour of irregular and complex structures, CD ROM, FlorenceGoogle Scholar
  9. Michalis F, Dimitrios V, Manolis P (2006) Evaluation of the influence of vertical irregularities on the seismic performance of nine-storey steel frame. Earthq Eng Struct Dyn 35:1489–1509CrossRefGoogle Scholar
  10. Miranda E, Reyes CJ (2002) Approximate lateral drift demands in multistory buildings with nonuniform stiffness. J Struct Eng 128:840–849CrossRefGoogle Scholar
  11. Priestley MJN, Calvi GM, Kowalsky MJ (2007) Displacement-based seismic design of structures. Analysis tools for direct displacement-based design. IUSS Press, PaviaGoogle Scholar
  12. Tremblay R, Merzouq S, Izvernari C, Alexieva K (2005) Application of the equivalent static force procedure for the seismic design of multi-storey buildings with vertical mass irregularity. Can J Civ Eng 32:561–568CrossRefGoogle Scholar
  13. Valmundsson EV, Nau JM (1997) Seismic response of building frames with vertical structural irregularities. J Struct Eng 123:30–41CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.University of TorontoTorontoCanada

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