Earthquakes and Structures

  • 제10권4호
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  • Pages.867-891
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  • 2016
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
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Fire-after-earthquake resistance of steel structures using rotational capacity limits

  • Pantousa, Daphne (Laboratory of Structural Analysis and Design, Department of Civil Engineering, University of Thessaly) ;
  • Mistakidis, Euripidis (Laboratory of Structural Analysis and Design, Department of Civil Engineering, University of Thessaly)
  • 투고 : 2015.09.03
  • 심사 : 2016.01.27
  • 발행 : 2016.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper addresses numerically the behavior of steel structures under Fire-after-Earthquake (FAE) loading. The study is focused on a four-storey library building and takes into account the damage that is induced in structural members due to earthquake. The basic objective is the assessment of both the fire-behavior and the fire-resistance of the structure in the case where the structure is damaged due to earthquake. The combined FAE scenarios involve two different stages: during the first stage, the structure is subjected to the ground motion record, while in the second stage the fire occurs. Different time-acceleration records are examined, each scaled to multiple levels of the Peak Ground Acceleration (PGA) in order to represent more severe earthquakes with lower probability of occurrence. In order to study in a systematic manner the behavior of the structure for the various FAE scenarios, a two-dimensional beam finite element model is developed, using the non-linear finite element analysis code MSC-MARC. The fire resistance of the structure is determined using rotational limits based on the ductility of structural members that are subjected to fire. These limits are temperature dependent and take into account the level of the structural damage at the end of the earthquake and the effect of geometric initial imperfections of structural members.

키워드

참고문헌

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피인용 문헌

  1. Post-earthquake fire resistance of steel buildings vol.138, 2017, https://doi.org/10.1016/j.jcsr.2017.08.021
  2. Antiseismic Method of Prestressed Fabricated Building Structure under Intelligent Big Data vol.2021, pp.None, 2016, https://doi.org/10.1155/2021/9834770
  3. Post-earthquake fire resistance of tall steel concentrically braced frames vol.21, pp.1, 2016, https://doi.org/10.12989/eas.2021.21.7.011
  4. Numerical simulation of damage patterns in the plastic hinge area of fire protected (SFRM) steel beams and its effect on their fire resistance vol.4, pp.2, 2016, https://doi.org/10.1002/cepa.1445