Browse > Article

Fire Loading Analysis of Underground Box Structure with Considering of Concrete Spalling II : Load Carrying Capacity  

Lee, Gye-Hee (목포해양대학교 해양시스템공학부)
Kim, Sun-Hoon (영동대학교 토목환경공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.20, no.4, 2007 , pp. 485-492 More about this Journal
Abstract
In this study, based on the temperature distribution and the spalling histories those obtained in the companion paper, the thermal stress and moments of underground box structure were estimated. Additionally, the ultimate sectional moment considering with the thermal nonlinearities of material were estimated and the load carrying capacity of underground box structure was also obtained. As results, the load carrying capacity of negative moment part was dominated by thermal moment that come from thermal gradient of the section. However, the load carrying capacity of the positive moment part was rules by the yield stress of rebar that exposed to the high temperature induced spalling phenomena.
Keywords
spalling history; thermal moment; load crrying capacity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Caner, A., Zlatanic, S., Munfah, N. (2005) Structural fire performance of concrete and shotcrete tunnel liners, Journal of Structural Engineering, 131 (12), pp.1920-1925   DOI   ScienceOn
2 UIm, F.J., Coussy, O., Bazant, Z.P. (1999a) The Chunne1'fire. I: Chemoplastic softening in rapidly heated concrete, Journal Engineering Mechanics, 1253, pp.272-282
3 Shi, X., Tan, T.H., Tan, K.H., Guo Z. (2002) Effect of Force Temperature Paths on Behaviors of Reinforced Concrete Flexural Members. Journal of Structural Engineering, 128(3). pp.365-373   DOI   ScienceOn
4 Savov, K., Lackner, R., Mang, H.A. (2005) Stability assessment of shallow tunnels subjected to fire load, Fire Safety Journal, 40, pp.745-763   DOI   ScienceOn
5 Msaad, Y., Bonnet, G. (2006) Analyses of Heated Concrete Spalling due to Restrained Thermal Dilation: Application to the 'Chunnel' Fire, Journal of Engineering Mechanics, 132(0), pp. 1124-1132   DOI   ScienceOn
6 Mounajed, G., Obeid, W. (2004) A new coupling F.E. model for the simulation of thermal hydromechanical behaviour of concretes at high temperatures, Materials and Structures, 37, pp.422-432
7 Tenchev, R., Purnell, P. (2005) An application of a damage constitutive model to concrete at high temperature and prediction of spalling, International Journal of Solids and Structures, 42, pp.6550-6565   DOI   ScienceOn
8 ABAQUS Inc (2005) ABAQUS 6.5 User's Manual
9 Chung, J.H., Consolazio, G.R. (2005) Numerical modeling of transport phenomena in reinforced concrete exposed to elevated temperatures, Cement and Concrete Research 35, pp.597-608   DOI   ScienceOn
10 이계희, 최익창 (2007) 박리를 고려한 지하박스구조물의 화재 하중해석 I: 박리해석, 한국전산구조공학회 논문집, 20(4), pp.477-483   과학기술학회마을
11 Ulm, F.J., Acker, P., Levy, M. (1999b) The Chunnel'fire. II: Analysis of concrete damage, Journal Engineering Mechanics, 1253, pp.283-289