DOI QR코드

DOI QR Code

프리스트레스트 콘크리트 슬래브의 내화성능 예측에 대한 해석적 연구

Analytical Study on Fire Resistance Predictions of Prestressed Concrete Slabs

  • 민정기 (한국건설생활환경시험연구원 삼척 실화재시험연구센터) ;
  • 박민재 (고려대학교 건축사회환경공학부) ;
  • 주영규 (고려대학교 건축사회환경공학부)
  • Min, Jeong-Ki (Samcheok Real-scale Fire Testing & Research Center, Korea Conformity Laboratories) ;
  • Park, Min Jae (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Ju, Young K. (School of Civil, Environmental and Architectural Engineering, Korea University)
  • 투고 : 2016.11.30
  • 심사 : 2016.12.13
  • 발행 : 2017.03.15

초록

In fire design for floors, the three criteria of stability, integrity and insulation are required for the specified fire resistance duration. Among these, stability is not easy to confirm. For solid prestressed concrete slabs of uniform thickness, Eurocode 2 provides tabulated data and specifies an axis distance to the centroid of strands to achieve particular fire resistance ratings, but it is not clear if this data can be used for a wide range of different prestressed slab profiles. In order to verify the current code-fire ratings for precast prestressed slabs, both simple and advanced calculation methods are investigated. This paper examines the use of calculation methods, accounting for the real behaviour of unprotected simply supported prestressed concrete slabs exposed to the standard ISO 834 fire. The calculated fire resistance of each prestressed concrete slab is compared with tabulated data in Eurocode part 1.2, with detailed discussion.

키워드

참고문헌

  1. Bull, D. et al., "Seism ic P erform ance of Hollow Core Floor Systems : Guidelines for Design Assessment and Retrofit", SESOC, NZEE and NZCS, New Zealand, 2009
  2. MOLIT, "Regulation on the Standards for Evacuation and Fireproof Construction of Building", Infrastructure and Transport Affairs in Korea
  3. KCI, "Structural Concrete Code", Korea Concrete Institute, 2013 (in Korean)
  4. EC2, Eurocode 2: Design of Concrete Structure. EN 1992-1-2: General Rules - Structural Fire Design, European Committee for Standardization, Brussels, 2004
  5. Buchanan A.H., Structural Design for Fire Safety, John Wiley & Sons Ltd, Chichester, 2001
  6. Gustaferro, A. H., and Martin, L. D., Design for Fire Resistance of Precast Prestressed Concrete, 2nd Ed., Prestressed Concrete Institute, Illinois, USA, 1989