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Earthquake Engineering and Engineering Vibration

, Volume 16, Issue 1, pp 233–245 | Cite as

Probabilistic seismic loss estimation via endurance time method

  • Ehsan Tafakori
  • Saeid PourzeynaliEmail author
  • Homayoon E. Estekanchi
Article

Abstract

Probabilistic Seismic Loss Estimation is a methodology used as a quantitative and explicit expression of the performance of buildings using terms that address the interests of both owners and insurance companies. Applying the ATC 58 approach for seismic loss assessment of buildings requires using Incremental Dynamic Analysis (IDA), which needs hundreds of time-consuming analyses, which in turn hinders its wide application. The Endurance Time Method (ETM) is proposed herein as part of a demand propagation prediction procedure and is shown to be an economical alternative to IDA. Various scenarios were considered to achieve this purpose and their appropriateness has been evaluated using statistical methods. The most precise and efficient scenario was validated through comparison against IDA driven response predictions of 34 code conforming benchmark structures and was proven to be sufficiently precise while offering a great deal of efficiency. The loss values were estimated by replacing IDA with the proposed ETM-based procedure in the ATC 58 procedure and it was found that these values suffer from varying inaccuracies, which were attributed to the discretized nature of damage and loss prediction functions provided by ATC 58.

Keywords

performance-based earthquake engineering probabilistic seismic loss endurance time method uncertainty propagation 

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Copyright information

© Institute of Engineering Mechanics, China Earthquake Administration and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Ehsan Tafakori
    • 1
  • Saeid Pourzeynali
    • 1
    Email author
  • Homayoon E. Estekanchi
    • 2
  1. 1.Department of Civil Engineering, Faculty of EngineeringUniversity of GuilanRashtIran
  2. 2.Department of Civil EngineeringSharif University of TechnologyTehranIran

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