Earthquakes and Structures

  • 제22권2호
  • /
  • Pages.137-145
  • /
  • 2022
  • /
  • 2092-7614(pISSN)
  • /
  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Numerical study on the post-earthquake fire behavior of intermediate steel moment frames

  • Parvizizadeh, Shayan (Department of Civil Engineering, Sharif University Technology-International Campus) ;
  • Kazemi, Mohammad Taghi (Department of Civil Engineering, Sharif University Technology-International Campus)
  • 투고 : 2019.06.30
  • 심사 : 2021.10.12
  • 발행 : 2022.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

As steel is highly sensitive to temperature variations, fire exposure is more destructive in the case of steel structures in comparison to the concrete ones. The performance of an intermediate three-story steel moment frame with 4 spans was studied under the service load, thermal load and post-earthquake fire in this paper. Also, the effects of passive fire-protection materials such as ordinary cement-based and fire-retardant coatings were investigated. To model and analyze the structure; Abaqus software is utilized. In order to apply the earthquake effect, the push-over analysis method is employed. Changes in the stories deflection, endurance time and growth of nonlinear regions due to losses in the steel stiffness and strength, are among the issues considered in this study. As an interesting finding, the beams protected by ordinary cement-based coating could sustain the fire exposure at least for 30 minutes in all cases. The mentioned time is increased by employing a new fire-retardant protection, which could prevent significant loss in the structure resistance against fire, even after 60 minutes of exposure to fire.

키워드

참고문헌

  1. Abaqus version 2017 (2016), Dassault Systemes, Waltham, MA.
  2. AISC 360-05 (2005), Specifications for Structural Steel Buildings, American Institute of Steel Construction, Chicago.
  3. Behnam, B. and Ronagh, H.R. (2014), "Behavior of moment- resisting tall steel structures exposed to a vertically traveling post-earthquake fire", Struct. Des. Tall Spec., 23(14), 1083-1096. https://doi.org/10.1002/tal.1109.
  4. Behnam, B. and Ronagh, H.R. (2015), "Post-earthquake fire performance-based behavior of unprotected moment resisting 2D steel frames", KSCE J. Civil Eng., 19(1), 274-284. https://doi.org/10.1007/s12205-012-0527-7.
  5. Botting, R. and Buchanan, A. (2000), "Building design for fire after earthquake", Proceedings of the 12th World Conference on Earthqakes and Engineering, Auckland, January.
  6. Behnam, B. (2016), "Structural response of vertically irregular tall moment-resisting steel frames under pre-and post-earthquake fire", Struct. Des. Tall Spec, 25(12), 543-557. https://doi.org/10.1002/tal.1271.
  7. BS, EN. 13381-4 (2013), Test methods for determining the contribution to the fire resistance of structural members - Part 4: Applied passive protection products to steel members, British Standards Institution.
  8. Chicchi, R. and Varma, A. (2018), "Assessment of post-earthquake fire behavior of a steel MRF building in a low seismic region", Int. J. Steel Struct., 18(4), 1470-1481. https://doi.org/10.1007/s13296-018-0183-y.
  9. Della Corte, G., Landolfo, R. and Mazzolani, F.M. (2003), "Post-earthquake fire resistance of moment resisting steel frames", Fire Safety J., 38(7), 593-612. https://doi.org/10.1016/ S0379-7112(03)00047-X.
  10. Khorasani, N.E., Garlock, M. and Gardoni, P. (2016), "Probabilistic performance-based evaluation of a tall steel moment resisting frame under post-earthquake fires", J. Struct. Fire Eng., 7(3), 193-216. https://doi.org/10.1108/JSFE-09-2016-014.
  11. BHRC (2015), Fire Resistance Test Report on Protective Mineral Cover, Fire Engineering Department, Iran, https://samacor.co.
  12. MPO (2007), Instruction for Seismic Rehabilitation of Existing Building No. 360, Management and Planning Organization (Office of Deputy for Technical Affairs).
  13. Iranian National Building Code, Chapter 6 (2007), Loads on Building, Ministry of Roads and Urban Development, Department of National Building Regulations Affairs.
  14. Iranian National Building Code, Chapter 10 (2013), Design and Construction of Steel Structures, Ministry of Roads and Urban Development, Department of National Building Regulations Affairs.
  15. Standard No. 2800 (2013), Iranian Code of Practice for Seismic Resistant Design of Buildings.
  16. Izadifard, R.A., Hajikarimian, H. and Giuliani, L. (2018), "Progressive collapse of steel moment frame subjected to post-earthquake fire", Iran J. Sci. Technol. Trans. Civil Eng., 43(1), 9-20. https://doi.org/10.1007/s40996-018-0104-5.
  17. Jelinek, T., Zania, V. and Giuliani, L. (2017), "Post-earthquake fire resistance of steel buildings", J. Constr. Steel Res., 138, 774-782. https://doi.org/10.1016/j.jcsr.2017.08.021.
  18. Johnson, G.R. and Cook, W.H. (1985), "Fracture characteristics of three metals subjected to various strains, strain rates, temperatures and pressures", Eng. Fract. Mech., 21(1), 31-48. https://doi.org/10.1016/0013-7944(85)90052-9.
  19. Memari, M., Mahmoud, H. and Ellingwood, B. (2014), "Post-earthquake fire performance of moment resisting frames with reduced beam section connections", J. Constr. Steel Res., 103, 215-229. https://doi.org/10.1016/j.jcsr.2014.09.008.
  20. Memari, M., Mahmoud, H. and Ellingwood, B. (2017), "Stability of steel columns subjected to earthquake and fire loads", J. Struct. Eng., 144(1), 04017173. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001909.
  21. Memari, M. and Mahmoud, H. (2018), "Framework for a performance-based analysis of fires following earthquakes", Eng Struct., 171, 794-805. https://doi.org/10.1016/j.engstruct.2 018.05.099.
  22. Milke, J.A. (2016), "Analytical methods for determining fire resistance of steel members", SFPE Handbook Fire Protect. Eng., Springer, New York, 1909-1948. https://doi.org/10.1007/978-1-4939-2565-0_53.
  23. Pantousa, D. and Mistakidis, E. (2016), "Fire-after-earthquake resistance of steel structures using rotational capacity limits", Earthq. Struct., 10(4), 867-891. https://doi.org/10.12989/eas.2016.10.4.867.
  24. SAP2000, C.S.I. (2007), Integrated Software for Structural Analysis & Design, Computer and Structures, Inc., Berkeley, CA, U.S.A.
  25. Song, Q.Y., Heidarpour, A., Zhao, X.L. and Han, L.H. (2016), "Post-earthquake fire behavior of welded steel I-beam to hollow column connections: An experimental investigation", Thin Wall Struct., 98, 143-153. https://doi.org/10.1016/j.tws.2015.03.032.
  26. Yassin, H., Iqbal, F., Bagchi, A. and Kodur, V.K.R. (2008), "Assessment of post-earthquake fire performance of steel-frame buildings", Proceedings of the 14th World Conference on Earthqakes Engineering, Beijing, October.
  27. Zaharia, R. and Pintea, D. (2009), "Fire after earthquake analysis of steel moment resisting frames", Int. J. Steel Struct., 9(4), 275-284. https://doi.org/10.1007/BF03249501.