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Assessment on combined effects of multiple engineering demand parameters (MEDP) contributing on the shape of fragility curve

  • Arjun SilEmail author
  • Dawa Zangmu Sherpa
  • Pritam Hait
Research Article
  • 47 Downloads

Abstract

There is saying that earthquakes do not kill people however, the structures do, therefore, the earthquake mitigation becomes vital for the structure located in the earthquake-prone region. One such tool for the risk investigation is fragility analysis. It shows the probability of exceedance (POE) of certain damage level at particular intensity measures (IM). The method at first used for the nuclear power plants in 1984 and from 1990 its utilization was connected in building too. In the present work, the four story reinforced concrete (RC) framed residential building with different bay ratios such as 0.25, 0.50, 0.75 and 1.00 considered. The Non-Linear Time History Analysis (NLTHA) carried out and the inelastic behavior of the building is captured in the form of damage measures such as maximum inter-story drift ratio (MIDR), roof displacement (Δ), and the joint rotation (Ѳ). The two types of fragility curves has been obtained such as (1) considering the effects of only MIDR, and (2) considering the combined effects of MIDR, Δ, and Ѳ. However, past work by researchers is mostly dealing with the former type of fragility assessment. While for later type of fragility curve, limited work has been done. This paper presents the effects of the bay ratio (plan aspect ratio) in the fragility curve. It concluded that, combining the effects of response parameters has tremendous effect on the shape of the fragility curve and its effect must be considered in the study of fragility analysis.

Keywords

Fragility curve Displacement Risk EDPs Bay ratio IM 

Notes

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Civil EngineeringNIT SilcharAssamIndia

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