Browse > Article

Fire Loading Analysis of Underground Box Structure with Considering of Concrete Spalling I : Spalling Analysis  

Lee, Gye-Hee (목포해양대학교 해양시스템공학부)
Choi, Ik-Chang (목포해양대학교 해양시스템공학부)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.20, no.4, 2007 , pp. 477-483 More about this Journal
Abstract
In this study, the numerical fire analysis for temperature distribution and spalling behavior of underground concrete box structures that contained lifelines, such as power cables and communication cables. The temperature field of inner space was assumed based on the fire curve with the thermal gradient obtained from CFD analysis. It was assumed that the spalling behaviors of concrete are occurred when the concrete temperature reached the threshold, as dehydration degree. In this case, the elements correspond to spalling parts were removed and the analysis model were updated. Three fire scenarios were analyzed and the results were showed adequate spalling behavior. The bearing capacities of the box structures would be estimated in the companion paper.
Keywords
fire analysis; spalling of concrete; model update;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 윤진한 (2005) 전선피복재의 발열량분석보고서, 한국기계연구원
2 행정자치부 (2001) 화재통계연보(2001)
3 Numajiri, F., Furukawa, K. (1998) Mathematical expression of heat release rate curve and proposal of 'burning index', Fire and material, 22, pp.39-42   DOI   ScienceOn
4 UIm, F.J., Coussy, O., Bazant, Z.P. (1999a) The Chunnel'fire. I: Chemoplastic softening in rapidly heated concrete., Journal Engineering Mechanics, 1253, pp.272-282
5 UIm, F.J., Acker, P., Levy, M. (1999b) The Chunnel'fire. II: Analysis of concrete damage. Journal Engineering Mechanics, 1253, pp.283-289
6 ANSYS Inc. (2005) ANSYS 10.0 User's Manual
7 ABAQUS Inc. (2005) ABAQUS 6.5 User's Manual
8 Haack, A. (1998) Fire protection in traffic tunnels; general aspects and results of the EUREKA project, Tunnelling and underground space technology, 4, pp.377-381
9 이계희, 김선훈 (2007) 박리를 고려한 지하박스구조물의 화재 하중해석 II: 내하력, 전산구조공학회 논문집(인쇄중)   과학기술학회마을
10 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(10), pp.1124-1132   DOI   ScienceOn