Significance of Modeling Deterioration in Structural Components for Predicting the Collapse Potential of Structures Under Earthquake Excitations

  • Helmut Krawinkler
  • Farzin Zareian
  • Dimitrios G. Lignos
  • Luis F. Ibarra
Chapter

Abstract

The paper presents a summary of the state of knowledge in structural component and system modeling for predicting the collapse potential of buildings structural systems. In this context, collapse implies dynamic instability in a sidesway mode, usually triggered by large story drifts that are amplified by structure P-Δ effects and deterioration in strength and stiffness of the components of the system. The collapse capacity of a building is defined as the maximum ground motion intensity (often represented by the spectral acceleration at the first mode period) at which the structural system still maintains dynamic stability. A collapse fragility curve that incorporates aleatory uncertainty due to record-to-record (RTR) variability is obtained by ordering the collapse capacities for a representative set of ground motions. Realistic modeling of deterioration is found to be the most essential aspect of collapse prediction through nonlinear dynamic analysis.

Copyright information

© Springer Netherlands 2010

Authors and Affiliations

  • Helmut Krawinkler
    • 1
  • Farzin Zareian
    • 2
  • Dimitrios G. Lignos
    • 1
  • Luis F. Ibarra
    • 3
  1. 1.Department of Civil and Environmental EngineeringStanford UniversityStanfordUSA
  2. 2.University of CaliforniaIrvineUSA
  3. 3.Southwest Research Institute CNWRASan AntonioUSA

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