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http://dx.doi.org/10.9711/KTAJ.2010.12.3.223

Variation of time-dependent convection beat transfer coefficients in beat transfer analysis at various initial beating rates of tunnel fire scenarios  

Choi, Soon-Wook (한국건설기술연구원 기반시설연구본부 지반연구실, 연세대학교 사회환경시스템공학부 대학원)
Chang, Soo-Ho (한국건설기술연구원 기반시설연구본부 지반연구실)
Lee, Jun-Hwan (연세대학교 사회환경시스템공학부)
Ahn, Sung-Yol (사이텍이앤씨)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.12, no.3, 2010 , pp. 223-237 More about this Journal
Abstract
The initial heating rate is well known as one of the most influencing factors on the occurrence of spalling and the loss of strength in concrete after fire initiation. In this study, a series of fire tests were carried out at different initial heating rates to find out its effects on the deterioration of tunnel structural members. Heat transfer analyses combined with an element elimination model were also carried out to verify its applicability in the same conditions as the fire tests. Moreover, the convection heat transfer coefficients compatible with fire test results were derived from parametric studies. In this course, their time-dependent variations were also analyzed at different initial heating rates. Finally, a numerical formula to estimate the heat transfer coefficients at the various initial heating rates was proposed by the interpolation of the results of numerical analyses.
Keywords
Tunnel; fire; heating rate; convection coefficient; element elimination model;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 Haack, A (1998), "Fire protection in traffic tunnels: general aspects and results of the EUREKA project", Tunneling and Underground Space Technology, Vol. 13, No. 4, pp. 377-381.   DOI   ScienceOn
2 Ulm, F.J., Acker P. and Levy, M. (1999), "The chunnel fire. II: Analysis of concrete damage", Journal of Engineering Mechanics, Vol. 125, No. 3, March, pp. 283-289.   DOI   ScienceOn
3 ACI (1997), Standard Method for Determining Fire Resistance of Concrete and Mansonry Construction Assemblies, ACI 216.1-97 / TMS 0216.1-97, pp. 1-26.
4 Ahmed, G.N. (1990), Modelling of coupled heat and mass transfer in concrete structures exposed to elevated temperatures, PhD thesism Kansas State University, Manhattan, Kansas, USA.
5 ASCE/SFPE29 (1999), Standard calculation method for structural fire protection, Reston, VA, American Society of Civil Engineers.
6 Bostrom, L. and Larsen, C.K. (2006), "Concrete for tunnel linings exposed to severe fire exposure", Fire Technology, Vol. 42, pp. 351-362.   DOI   ScienceOn
7 Buchanan, A. H. (2002), Structural Design for Fire Safety, WILEY.
8 Caner, A., Zlatanic, S. and Munfah, N. (2005), "Structural fire performance of concrete and shotcrete tunnel liners", J. Struct. Eng., 131(12), pp. 1920-1925.   DOI   ScienceOn
9 Capua, D.D. and Mari, A.R. (2007), "Nonlinear analysis of reinforced concrete cross-sections exposed to fire", Fire Safety Journal 42, pp. 139-149.   DOI   ScienceOn
10 Carvel, R. (2002), "The history and future of fire tests", Tunnels & Tunnelling International, November 2002, pp. 34-35.
11 장수호, 쵠순욱, 배규진, 안성율 (2008), "요소제거기법을 적용한 지하구조물의 화재손상 예측모델 개발", 한국터널공학회 논문집, 제10권 제4호, pp. 1-15.   과학기술학회마을
12 건설교통부 (2007), 터널설계기준.
13 장수호, 최순욱, 권종욱, 배규진 (2006), "화재에 의한 터널구조물 시공재료의 손상 평가" 대한토목학회논문집, 제26권 제3C호, pp. 219-228.
14 장수호, 최순욱, 권종욱, 김상환, 배규진 (2007), "화재 후 터널구조물 시공재료의 역학적 특성변화" 한국터널 공학회논문집, 제9권 제2호, pp. 157-169.   과학기술학회마을
15 최순욱, 장수호, 박태환, 조봉현 (2009), "ISO834(4시간) 화재이력곡선에서의 침매터널 내화재 성능평가", 제35회 대한토목학회 정기학술대회 논문집, pp. 1015-1018.
16 Phan, L.T. (1996), Fire performance of high-strength concrete: A report of the state-of-the-Art, NISTIR 5934, National Institute of Standards and Technology, pp. 59-60.
17 PIARC (1999), "Fire and smoke control in road tunnels", PIARC committee on road tunnels, 5 May 1999.
18 Pichler, C., Lackner, R. and Mang, H.A. (2006), "Safety assessment of concrete tunnel linings under fire load", J. Struct. Eng., 132(6), pp. 961-969.   DOI   ScienceOn
19 Savov, K., Lacker, R. and Mang, H.A. (2005), "Stability assessment of shallow tunnels subjected to fire load", Fire Safety Journal, Vol. 40, pp. 745-763.   DOI   ScienceOn
20 Kodur, y.K.R. (2000), "Spalling in high strength concrete exposed to fire-concerns, causes, critical parameters and cures", Proceedings, ASCE Structures Congress, Philadelphia, PA, 2000.
21 Kodur, V.K.R. and Dwaikat, M. (2008), "A numerical model for predicting the fire resistance of reinforced concrete beams", Cement & Concrete Composites 30, pp. 431-443.   DOI   ScienceOn
22 Lamont, S., Usmani, A.S. and Drysdale, D.D. (2001), "Heat transfer analysis of the composite slab in the cardington frame fire tests", Fire Safety Journal 36, pp. 815-839.   DOI   ScienceOn
23 Kodur, V.K.R. and Phan, L. (2007), "Critical factors governing the fire performance of high strength concrete systems", Fire Safety J., Vol. 42, pp. 482-488.   DOI   ScienceOn
24 Kwak, H.Y., Ha, S.J. and Kim, J.K. (2006), "Non-structural cracking in RC walls part I. finite element formulation" Cement and Concrete Research, Vol. 36, pp. 749-760.   DOI   ScienceOn
25 Lamond, J.F. and Pielert, J.H (2006), Significance of tests and properties of concrete & concrete-making materials, ASTM international.
26 Ono, K. and Otsuka, T. (2006), "Fire design requirement for various tunnel", Proc. of 32nd ITA - World Tunnel Congress, Seoul, Keynote lecture.
27 Peng, G-F. (2000), "Evaluation of fire damage to high performance concrete" Ph.D. Dissertation, Hong Kong Polytechnic University, pp. 26-48.
28 EN1992-1-2 Eurocode 2 (2004), Design of concrete structures, Part 1-2: General rules - Structural Fire Design, Brussels, Commission of European Communities.
29 Ingason, H and Uonnermark, A (2004), "Recent achivements regarding measuring of time-heat and time-temperature development in tunnels", 1st International Symposium on Safe&Reliable Tunnels, Prague, Czech Republic, 4-6 February.
30 Hertz, K.D. (2003), "Limits of spalling of fire-exposed concrete", Fire Safety Journal, Vol. 38, pp. 103-116.   DOI   ScienceOn
31 ITA WG-6 (2004), guidelines for structural fire resistance for road tunnels.
32 Khoury, G.A. (2000), "Effect of fire on concrete and concrete structures", Prog. Struct. Engng Mater. 2000; 2, pp. 429-447.   DOI   ScienceOn
33 Khoury, G.A., Majorana, C.E., Pesavento, F. and Schrefler, B.A. (2002), "Modelling of heated concrete", Magazine of Concrete Research, 54, No.2, April, pp. 77-101.   DOI   ScienceOn
34 Khoylou N. (1997), Modelling of moisture migration and spalling behaviour in non-uniformly heated concrete, PhD Thesis, University of London.
35 日本コンクーリト工學協會 (2002), コンクーリト構造物の火災安全性硏究委員會報告書, pp. 94-112.