Construction of Response Spectra for Inelastic Asymmetric-Plan Structures

Chapter
Part of the Geotechnical, Geological and Earthquake Engineering book series (GGEE, volume 13)

Abstract

Conventional inelastic response spectra constructed by using the single-degree-of-freedom (SDOF) systems to represent the relationship of roof translation to base shear are not sufficiently accurate for the estimation of rotational seismic demands of asymmetric-plan structures. This study introduces a method for constructing the response spectra, referred to as T-R response spectra, for inelastic asymmetric-plan structures using the two-degree-of-freedom (2DOF) modal systems. The 2DOF modal system simultaneously simulates two kinds of the modal force-deformation relationships of one-way asymmetric-plan structures. One is the roof translation vs. base shear relationship and the other is the roof rotation vs. base torque relationship. Three tasks have been accomplished in developing the T-R response spectra. First, the key independent elastic 2DOF modal parameters are identified. Second, the relationships between the inelastic 2DOF modal parameters and the strength ratio are established. Third, the ranges of 2DOF modal parameter values have been investigated. Constant-strength T-R response spectra are constructed and presented in the paper.

Keywords

Ground Motion Response Spectrum Base Shear Strength Ratio Vibration Period 
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. 1.
    Applied Technology Council (1996), Seismic evaluation and retrofit of concrete buildings, volumes 1 and 2, Report No. ATC-40, ATC, Redwood City, CAGoogle Scholar
  2. 2.
    Chopra AK, Goel RK (2002) A modal pushover analysis procedure for estimating seismic demands for buildings. Earthq Eng Struct Dyn 31:561–582CrossRefGoogle Scholar
  3. 3.
    Lin JL, Tsai KC (2007) Simplified seismic analysis of asymmetric building systems. Earthq Eng Struct Dyn 36:459–479MathSciNetCrossRefGoogle Scholar
  4. 4.
    Lin JL, Tsai KC (2009) Modal parameters for the analysis of inelastic asymmetric-plan structures. Earthq Spectra 25:821–849Google Scholar
  5. 5.
    Nassar AA, Krawinkler H (1991) Seismic demands for SDOF and MDOF systems. Report No. 95, The John A. Blume Earthquake Engineering Center, Stanford University, Stanford, CAGoogle Scholar
  6. 6.
    Vidic T, Fajfar P, Fischinger M (1992) A procedure for determining consistent inelastic design spectra. Proceedings of workshop on nonlinear seismic analysis of RC structures, Bled, SloveniaGoogle Scholar

Copyright information

© Springer Netherlands 2010

Authors and Affiliations

  1. 1.National Center for Research on Earthquake EngineeringTaipeiTaiwan
  2. 2.National Taiwan UniversityTaipeiTaiwan

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