Steel and Composite Structures

  • 제21권1호
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  • Pages.93-107
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  • 2016
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Closed-form fragility analysis of the steel moment resisting frames

  • Kia, M. (Department of Civil and Environmental Engineering, Amirkabir University of Technology) ;
  • Banazadeh, M. (Department of Civil and Environmental Engineering, Amirkabir University of Technology)
  • 투고 : 2015.11.25
  • 심사 : 2016.03.13
  • 발행 : 2016.05.20
⟨ 이전 논문 다음 논문 ⟩

초록

Seismic fragility analysis is a probabilistic decision-making framework which is widely implemented for evaluating vulnerability of a building under earthquake loading. It requires ingredient named probabilistic model and commonly developed using statistics requiring collecting data in large quantities. Preparation of such a data-base is often costly and time-consuming. Therefore, in this paper, by developing generic seismic drift demand model for regular-multi-story steel moment resisting frames is tried to present a novel application of the probabilistic decision-making analysis to practical purposes. To this end, a demand model which is a linear function of intensity measure in logarithmic space is developed to predict overall maximum inter-story drift. Next, the model is coupled with a set of regression-based equations which are capable of directly estimating unknown statistical characteristics of the model parameters.To explicitly address uncertainties arise from randomness and lack of knowledge, the Bayesian regression inference is employed, when these relations are developed. The developed demand model is then employed in a Seismic Fragility Analysis (SFA) for two designed building. The accuracy of the results is also assessed by comparison with the results directly obtained from Incremental Dynamic analysis.

키워드

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