Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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Charring Properties of Glued Laminated Timber Columns using Domestic Larch Exposed to High Temperatures

고온에 노출된 국내산 낙엽송 구조용 집성재 기둥의 탄화 특성

  • An, Jae-Hong (Department of Construction Test & Certification Center, Korea Institute of Civil Engineering and Building Technology) ;
  • Choi, Yun-Jeong (Department of Construction Test & Certification Center, Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Se-Jong (Research Planning and Coordination Division, National Institute of Forest Science)
  • Received : 2022.10.26
  • Accepted : 2023.01.09
  • Published : 2023.02.20
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Abstract

It is widely known that the level of fire resistance of wooden structure is determined by a charring rate or charring depth, and these are adopted for fire design. In this study, specimens of domestic larch column with a lamination wooden type were prepared and the fire resistance properties such as the charring depth, load ratio and the specific charring rate suggested by EN Code investigated. Test results showed that as expected, the weakest part was the corner of the column, so that the charring depth of the corner was deeper than the other parts of the column. For the load ratio less than 0.9, it had little effect on the charring depth.

목구조 건축물의 목재 구조부재는 내화 설계시 국제적으로 탄화 속도나 탄화 두께를 사용하며, 국내에서도 내화구조 인정시 탄화 두께 기준을 적용한다. 본 연구에서는 국내산 낙엽송으로 제작된 구조용 집성재 기둥의 탄화 특성에 대하여 내화시험을 실시하여 탄화 특성, 하중비에 따른 영향 및 유로코드(Euro code)에서 제시한 탄화 속도와 비교 분석하였다. 내화시험 결과 탄화 두께는 단면 코너 부위의 영향을 보이는 것으로 나타났으며 하중비 0.9 이하에서는 하중비가 탄화 두께에 미치는 영향은 미미한 것으로 나타났다.

Keywords

Acknowledgement

This research was supported by National Institute of Forest Science of Korea(Project No. 20190248-001).

References

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