Earthquakes and Structures

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Steel frame fragility curve evaluation under the impact of two various category of earthquakes

  • Wang, Feipeng (Department of Architecture and Civil Engineering, Yuncheng Vocational and Technical University) ;
  • Miao, Jie (Department of Architecture and Civil Engineering, Yuncheng Vocational and Technical University) ;
  • Fang, Zhichun (School of civil engineering, Shijiazhuag Tiedao University) ;
  • Wu, Siqi (School of traffic and transportation, Shijiazhuag Tiedao University) ;
  • Li, Xulong (School of civil engineering, Shijiazhuag Tiedao University) ;
  • Momeni, Younes (Tabriz Branch, Islamic Azad University)
  • Received : 2020.12.28
  • Accepted : 2021.05.14
  • Published : 2022.01.25
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Abstract

One of the key tools in assessing the seismic vulnerability of the structures is the use of fragile functions, which is the possibility of damage from a particular damage surface for several levels of risk from the seismic movements of the earth. The aim of this study is to investigate the effect of two categories of earthquake events on the fragile curve (FRC) of the steel construction system. In this study, the relative lateral displacement of the structures is considered as a damage criterion. The limits set for modifying the relative lateral position in the HAZUS instruction are used to determine the failure modes, which include: slight, moderate, extensive and complete. The results show, as time strong-motion increases, the probability of exceeding (PoE) increases (for Peak ground acceleration (PGA) less than 0.5). The increase in seismic demand increases the probability of exceeding. In other words, it increases the probability of exceeding, if the maximum earthquake acceleration increases. Also, 7-storey model in extensive mode has 20 and 26.5% PoE larger than 5- and 3-storey models, respectively.

Keywords

Acknowledgement

This work was supported by the National Science Foundation of China (Grant Nos. 51978424), Science and technology development plan project of Shaanxi Construction Department (Grant No. 2018-K05).

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