Development of fragility curves for use in seismic risk targeting

Research output: Contribution to conferencePaper

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Abstract

Many studies have shown that designing structures in a region by applying the ‘uniform hazard’ principle does not guarantee that the risk of collapse throughout this region will also be uniform. In other words, using constant-return-period ground motions for design leads to structures exposed to different levels of earthquake risk, even though they are designed according to the same regulations. Recently, a more sophisticated approach, often referred to as ‘risk-targeting’, has been developed and applied in practice in the US, while studies have also been conducted for France, Romania and Indonesia, as well as for the whole of Europe.

In this study, we design, based on Eurocodes 2 and 8, a set of six reinforced concrete buildings corresponding to different geometries and two levels of design peak ground acceleration (0.1 and 0.3g). The response of these buildings to earthquake shaking is modelled numerically using state-of-the-art computer software to develop fragility curves for different limit states. We find that while the design acceleration has some influence on the fragility curves, other parameters such as the number of storeys also affect them. These preliminary results are useful for improving the procedures for risk-targeting.
Original languageEnglish
Number of pages9
Publication statusPublished - 18 Jun 2018
Event16th European Conference on Earthquake Engineering - Thessaloniki, Greece
Duration: 18 Jun 201821 Jun 2018
http://www.16ecee.org/

Conference

Conference16th European Conference on Earthquake Engineering
CountryGreece
CityThessaloniki
Period18/06/1821/06/18
Internet address

Keywords

  • risk targeting
  • seismic design
  • fragility curves
  • vulnerability
  • reinforced concrete

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  • Research Output

    Evaluating alternative approaches for the seismic design of structures

    Gkimprixis, A., Tubaldi, E. & Douglas, J., 31 Jul 2020, In : Bulletin of Earthquake Engineering. 18, 9, p. 4331-4361 31 p.

    Research output: Contribution to journalArticle

    Open Access
    File
  • 2 Downloads (Pure)

    Risk targeting in seismic design codes: the state of the art, outstanding issues and possible paths forward

    Douglas, J. & Gkimprixis, A., 22 Mar 2018, Seismic Hazard and Risk Assessment: Updated Overview with Emphasis on Romania. Vacareanu, R. & Ionescu, C. (eds.). Cham, p. 211-223 13 p. (Springer Natural Hazards).

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Open Access
    File
  • 51 Downloads (Pure)

    Activities

    • 1 Participation in conference

    16th European Conference on Earthquake Engineering

    John Douglas (Participant)
    18 Jun 201821 Jun 2018

    Activity: Participating in or organising an event typesParticipation in conference

    Cite this

    Gkimprixis, A., Douglas, J., Tubaldi, E., & Zonta, D. (2018). Development of fragility curves for use in seismic risk targeting. Paper presented at 16th European Conference on Earthquake Engineering, Thessaloniki, Greece.