한국화재소방학회논문지 (Fire Science and Engineering)

  • 제28권2호
  • /
  • Pages.76-81
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  • 2014
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  • 2765-060X(pISSN)
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  • 2765-088X(eISSN)
한국화재소방학회 (Korean Institute of Fire Science and Engineering)
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일반 구조용 강재 적용 H형강 보부재의 해석에 의한 고온내력 평가 연구

Evaluation of Structural Stability at High Temperature for H-section Beams Made of Ordinary Strength Steels by Analytic Method

  • Kwon, In-Kyu (Department of Fire Protection Engineering, Kangwon National University)
  • 투고 : 2014.02.28
  • 심사 : 2014.04.22
  • 발행 : 2014.04.30
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초록

화재와 같은 고온 시 구조부재의 붕괴를 방지함으로써 재실자와 소방관계자 그리고 재산을 보호할 수 있는 방법은 구조부재의 내화성능을 확보하는 것이며, 이는 시방적 내화설계방법인 내화시험을 통하여 확보되어 왔다. 그러나 내화시험에 수반되는 시험체 제작과 운반 그리고 막대한 시험 비용의 반복적 사용 등은 새로운 공법과 재료 개발의 문제점으로 대두되었다. 따라서 본 연구에서는 일반 등급(SS 400) 강재의 고온 시 항복강도, 탄성계수와 열전달 및 열응력 해석을 적용하여 H형강 보부재의 표면온도 상승 및 고온 시 내력 변화를 평가하였다. 또한 H형강 보부재의 길이 변화에 따른 고온 시의 보부재의 내력평가를 수행하여 각각의 길이변화에 따른 내력 변화의 차이를 평가하였다.

Structural stability of structural beams at high temperature had been evaluated though a horizontal furnace and a standard fire curve. If a structural method and a material are satisfied with the fire test, those are seemed to be guaranteed the safety of residences, fire services men, and properties of the buildings. However, that requires not only longer period but higher cost for making and testing of each structural element. That restrained from developing new methods and new fire protective materials. In this study, an analytic method was executed to demonstrate whether the analytic method using mechanical properties of structural steel at high temperature with heat transfer theory works is working. In this paper, the surface temperature rising and variance of structural stability of a simple H-section beam with a standard fire curve were evaluated and structural stabilities of H-section beam according to differences from length of beam were suggested.

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참고문헌

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피인용 문헌

  1. Experimental Study on Behavior of H-Beam with End-plate Connection at High Temperature vol.30, pp.4, 2018, https://doi.org/10.7781/kjoss.2018.30.4.175