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Evaluation on the Fire Resistance Performance for High-Rise Modular Walls

중·고층형 모듈러 벽체의 내화성능 평가

  • Received : 2018.11.01
  • Accepted : 2019.02.27
  • Published : 2019.07.01

Abstract

The use of modular buildings is increasing because of various advantages of modular buildings. But there are limits to apply modular buildings to medium-rise buildings because the building law provides only the specification criteria of the modular building with respect to the 1 hour fire resistance performance. This study was conducted to investigate 2 hours fire resistance performance of load bearing walls with steel studs in modular buildings by KS F 2257-1 and KS F 2257-4. After full scale tests, load bearing walls ensuring two hours fire resistance performance consist of at least 2 layers of fire resistance plaster boards of 19mm thickness or 3 layer of fire resistance plaster boards of thickness.

국내 건축법에는 표준 내화구조인 KS F 1611-5에서 1시간 내화성능을 갖는 각형강관에 대한 사양적 기준만을 제시하고 있어 각형 강관에 적용되는 모듈러 건축물을 중 고층에 적용하기 위해서는 한계가 있다. 따라서 내화성능 평가를 통해 2시간 인정을 받은 모듈러 구조에 한하여 중 고층 건축물에 적용이 가능하다. 본 연구에서는 KS F 2257-1 및 KS F 2257-4 기준에 의거하여 실대형 내화실험을 수행하였다. 평가결과 OW-01 및 OW-02 실험체의 경우 각형강관의 온도상승 및 강도 저하로 인해 면외좌굴이 발생하여 2시간 내화성능을 확보하지 못하였으나, 피복 및 각형강관 두께를 보완한 IW-01 및 OW-03 실험체의 경우 충분한 차열성능으로 인해 2시간 내화성능을 확보하여 중고층 모듈러 건축에 적용하는 것이 가능한 것으로 판단되었다.

Keywords

References

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