Fire Science and Engineering (한국화재소방학회논문지)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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Finite Element Analysis of H-Shaped Compressive Member Exposed High Temperatures

고온에 노출된 H-형강 압축재의 유한요소해석

  • Lee, Swoo-Heon (School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University) ;
  • Lee, Hee-Du (School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University) ;
  • Choi, Jun-Ho (Department of Fire Protection Engineering, Pukyong National University) ;
  • Shin, Kyung-Jae (School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University)
  • 이수헌 (경북대학교 건설환경에너지공학부) ;
  • 이희두 (경북대학교 건설환경에너지공학부) ;
  • 최준호 (부경대학교 소방공학과) ;
  • 신경재 (경북대학교 건설환경에너지공학부)
  • Received : 2016.07.07
  • Accepted : 2016.10.12
  • Published : 2016.10.31
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Abstract

Steel is a structural material that is inherently noncombustible. On the other hand, it has high thermal conductivity and the strength and stiffness of the material are reduced significantly when exposed to fire or high temperatures. Because the yield strength and modulus of elasticity of steel are reduced by 70% at $350^{\circ}C$ and less than 50% at $600^{\circ}C$, the load-carrying capacity of steel structure at high temperature rapidly lose. To be accepted as a fire-resisting construction, the fire test should be performed at the certificate authority. On the other hand, the fire test on a full-scale structure is limited by time, space, and high-cost. The analytical method was verified by a comparison with the fire test of H-section columns under compression and thermal analysis based on a finite element method using the ABAQUS program, and the numerical analysis method reported in this study was suggested as a complement of an actual fire test.

구조재료 중에서 강재는 불연성 재료이지만 열전도가 높고, 온도상승에 의하여 강성의 저하가 높은 편이다. 일반적으로 강재의 항복강도 및 탄성계수는 $350^{\circ}C$에서 70%, $600^{\circ}C$에서 50% 이하로 감소하기 때문에 고온에서의 철골구조의 재하능력은 급격히 감소하게 된다. 통상 내화구조로 인정받기 위해서는 공인기관으로부터의 품질시험을 거쳐야 한다. 하지만, 실물내화실험은 공간과 시간의 제약, 고비용의 문제점을 안고 있으므로, 본 연구에서는 ABAQUS 프로그램의 유한요소법을 이용한 열해석을 수행하여 압축을 받는 H-형강기둥의 내화실험과의 비교로 해석모델의 신뢰성을 입증하고, 실물실험의 보완책으로의 가능성을 제시한다.

Keywords

References

  1. European Committee for Standardization (CEN), "Eurocode 3: Design of Steel Structures - Part 1-2: General Rules - Structural Fire Design", EN 1993-1-2, British Standards Institution, UK (2005).
  2. S. M. Jeon and J. J. Kim, "Review on Fire Test Section of Fire Protection Coating for Steel Beam", Fire Science and Engineering, Vol. 30, No. 2, pp. 49-55 (2016). https://doi.org/10.7731/KIFSE.2016.30.2.049
  3. I. K. Kwon, N. Y. Jee and S. H. Lee, "Experimental Study on the Critical Temperature for Structural Elements such as Column and Beam Exposed to Fire Condition", Journal of the Architectural Institute of Korea (Structure and Construction), Vol. 18, No. 10, pp. 45-51 (2002).
  4. I. K. Kwon, "Experimental Study on Limiting Temperatures of Structural Beams Made with Structural Steel According to Load Ratios", Journal of Korean Society of Steel Construction, Vol. 22, No. 6, pp. 581-588 (2010).
  5. I. K. Kwon, "A Study on the Properties of SM 400 for Evaluation of Structural Stability at High Temperature", Fire Science and Engineering, Vol. 27, No. 4, pp. 7-12 (2013). https://doi.org/10.7731/KIFSE.2013.27.4.7
  6. I. K. Kwon, "Evaluation of Structural Stability of Fire Resistant Steel Produced by Thermo-Mechanical Control Process at High Temperature", Fire Science and Engineering, Vol. 27, No. 6, pp. 21-25 (2013). https://doi.org/10.7731/KIFSE.2013.27.6.021
  7. I. K. Kwon, "An Analytic Study on Structural Stability according to Boundary Condition and H-Section Column Lengths Made of An Ordinary Grade Structural Steels (SS 400) at High Temperature", Fire Science and Engineering, Vol. 28, No. 1, pp. 20-25 (2014). https://doi.org/10.7731/KIFSE.2014.28.1.020
  8. I. K. Kwon, "Evaluation of Structural Stability at High Temperatures for Beams Made of High Strength Structural Steels (SM 570) by Analytical Method", Fire Science and Engineering, Vol. 28, No. 3, pp. 49-54 (2014). https://doi.org/10.7731/KIFSE.2014.28.3.049
  9. I. K. Kwon, "Study of Structural Stability for H-Section Beams Made of Fire Resistant Steels (FR 490) at High Temperatures by Analytical Method", Fire Science and Engineering, Vol. 28, No. 5, pp. 52-57 (2014). https://doi.org/10.7731/KIFSE.2014.28.5.052
  10. I. K. Kwon, "Analytical Structural Stability Evaluation for H-Section Beams Made of Ordinary Structural Steels Based on Boundary Conditions at High Temperatures", Fire Science and Engineering, Vol. 29, No. 4, pp. 33-38 (2015). https://doi.org/10.7731/KIFSE.2015.29.4.033
  11. I. K. Kwon, "Study on Fire Resistance Performance According to Boundary Conditions for Beams Made of High-Strength Structural Steels Using Analytical Methods", Fire Science and Engineering, Vol. 29, No. 5, pp. 23-28 (2014). https://doi.org/10.7731/KIFSE.2015.29.5.023
  12. H. N. Park, J. K. Ahn and C. H. Lee, "Analytical of Structural and Thermal Parameters for Evaluating Fire Resistance of Steel Beams", Journal of Korean Society of Steel Construction, Vol. 21, No. 6, pp. 609-618 (2009).
  13. S. K. Yoon, C. H. Lee and B. H. Koo, "Calculation of Limit Temperature on H-Beam Flexural Member Through the Thermal Stress Analysis under the Lateral Load", Journal of Korean Society of Steel Construction, Vol. 27, No. 4, pp. 387-397 (2015). https://doi.org/10.7781/kjoss.2015.27.4.387
  14. B. Y. Koo, M. M. Kang and S. D. Kang, "A Study on the Local Buckling of H-Beams at Elevated Temperatures", Journal of Korean Society of Steel Construction, Vol. 16, No. 1, pp. 103-111 (2004).
  15. T. S. Baik, S. D. Kang and M. M. Kang, "Local Buckling Behavior of Cold-Formed Channel Columns under Compression at Elevated Temperatures", Journal of Korean Society of Steel Construction, Vol. 16, No. 4, pp. 433-442 (2004).
  16. T. S. Baik and M. M. Kang, "Local and Overall Buckling of H-Shaped Steel Column under Compression at Elevated Temperature", Journal of the Architectural Institute of Korea (Structure and Construction), Vol. 20, No. 9, pp. 63-70 (2004).
  17. K. J. Hwang, B. Y. Cho and I. H. Yeo, "A Study on the Fire Resistance Performance of Reinforced Concrete Columns According to Axial Load Ratio", Fire Science and Engineering, Vol. 27, No. 6, pp. 26-31 (2013). https://doi.org/10.7731/KIFSE.2013.27.6.026
  18. D. H. Won, T. H. Han, J. S. Park and Y. J. Kang, "Analytical Study on the Fire Resistance of Internally Confined Hollow CFT Column", Journal of Korean Society of Steel Construction, Vol. 21, No. 5, pp. 461-470 (2009).
  19. J. K. Ahn and C. H. Lee, "Evaluation of Fire Resistance of Unprotected Concrete-Filled Rectangular Steel Tubular Columns under Axial Loading", Journal of Korean Society of Steel Construction, Vol. 26, No. 4, pp. 323-334 (2014). https://doi.org/10.7781/kjoss.2014.26.4.323
  20. S. J. Lee, S. D. Kang, M. H. Oh, M. H. Kim and S. D. Kim, "Experimental Study on the Fire Resistance of SC Composite Column", Journal of Korean Society of Steel Construction, Vol. 19, No. 4, pp. 425-434 (2007).
  21. H. S. Choi, S. D. Kang and J. E. Kim, "The Experimental Study on the Resistance Forces and the Failure Temperatures of H-Shaped Steel Compressive Members by Elevated Temperatures", Journal of Korean Society of Steel Construction, Vol. 25, No. 2, pp. 131-139 (2013). https://doi.org/10.7781/kjoss.2013.25.2.131
  22. International Organization for Standardization (ISO), "Fire-Resistance Tests - Elements of Building Construction - Part 1: General Requirements", ISO 834-1:1999, ISO, Switzerland (1999).
  23. Korean Standards Association (KSA), "Methods of Fire Resistance Test for Elements of Building Construction - General Requirements", KS F 2257-1:2014, KSA, Korea (2014).
  24. Hibbit, Karlsson & Sorensen, Inc., "ABAQUS/Standard User's Manual, version 5.8", Rhode Island, USA (1998a).
  25. Hibbit, Karlsson & Sorensen, Inc., "ABAQUS/Viewer User's Manual, version 5.8", Rhode Island, USA (1998a).
  26. Hibbit, Karlsson & Sorensen, Inc., "ABAQUS/CAE User's Manual, version 6.1", Rhode Island, USA (2000).