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Effect of aftershock intensity on seismic collapse fragilities

Author

Listed:
  • Negar Nazari
  • John W. Van de Lindt
  • Yue Li

Abstract

This paper presents a procedure to compute the sensitivity of a mainshock (MS)-damaged building's collapse probability to earthquake intensity as a function of magnitude or site-to-source distance. Specifically, the effect of earthquake magnitude and spatial distribution of aftershocks on collapse fragilities is investigated. Aftershock (AS) fragilities for different site-to-source distances are examined by performing incremental dynamic analysis (IDA) using a sequence of MS+AS ground motions. The effect of MS damage is to alter the fragilities which can be quantified for the building investigated. It is observed that the collapse fragilities have a reasonable variation in collapse probabilities with changing AS magnitude and/or site-to-source distance.

Suggested Citation

  • Negar Nazari & John W. Van de Lindt & Yue Li, 2014. "Effect of aftershock intensity on seismic collapse fragilities," International Journal of Reliability and Safety, Inderscience Enterprises Ltd, vol. 8(2/3/4), pages 174-195.
    • Handle: RePEc:ids:ijrsaf:v:8:y:2014:i:2/3/4:p:174-195
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