Structural Response of Tall Buildings to Multiple Floor Fires
Publication: Journal of Structural Engineering
Volume 133, Issue 12
Abstract
This paper reports on an investigation of the effects of fire on long span truss floor systems in a tall building environment. The effects of fire spread over multiple floors of a building are the focus of this research, especially where this may lead to progressive collapse. The results from an investigation of a two-dimensional model of a multistory office building analysis are presented. The model is representative of the type of construction used in the World Trade Center Towers 1 and 2. The local and global response of the model is described over the course of a concurrent fire on three floors reaching a peak compartment temperature of . The results of the analysis show that large displacements may occur in long span structural floor systems without failure, however, the interaction of the highly deflected floors with the exterior or perimeter columns can lead to structural collapse. Additional structural members, such as hat trusses, that allow redistribution of loads away from the exterior columns to the core columns have a significant beneficial impact on the robustness of the structure.
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References
ArupFire. (2002). “World Trade Center expert report.” Ove Arup, August.
British Standards Institution (BSI). (2003). “Structural use of steelwork in building. Code of practice for fire resistant design.” BS 5950-8:2003, London.
British Standards Institution (BSI). (2004). “Eurocode 2: Design of concrete structures. General rules and rules for buildings.” BS EN 1992-1.1:2004, London.
British Standards Institution (BSI). (2005). “Eurocode 3: Design of steel structures. General rules and rules for buildings.” BS EN 1993-1.1:2005, London.
Burgess, I. W., and Plank, R. J. (1998). “Modelling the fire tests on the Cardington full-scale frame.” Proc., 3rd Cardington Conf, 26–27 November, Cardington, U.K.
Cameron, N. (2003). “The behaviour and design of composite floor systems in fire.” Ph.D. thesis, Edinburgh Univ., Edinburgh, Scotland.
Duthinh, D. (2004). “2D analysis of a building frame under gravity load and fire.” Proc., Computational and Experimental Engineering Sciences Int. Conf. (ICCES’04), Maderia, Portugal, 1–6.
Federal Emergency Management Agency (FEMA). (2003). “World Trade Center building performance study: Data collection, preliminary observations and recommendations.” Rep. No. 403, Washington, D.C.
Flint, G. (2005). “Fire induced collapse of tall buildings.” Ph.D. thesis, Edinburgh Univ., Edinburgh, Scotland, ⟨www.civ.ed.ac.uk/research/fire/thesis.html⟩.
Flint, G., Usmani, A. S., Lamont, S., Torero, J., and Lane, B. (2006). “Effect of fire on composite long span truss floor systems.” J. Constr. Steel Res., 62(4), 303–315.
Gillie, M. (2000). “The behaviour of steel-framed composite structures in fire conditions.” Ph.D. thesis, Edinburgh Univ., Edinburgh, Scotland, ⟨www.civ.ed.ac.uk/research/fire/thesis.html⟩.
Gillie, M., Usmani, A. S., and Rotter, J. M. (2001). “A structural analysis of the Cardington British steel corner test.” J. Constr. Steel Res., 58(4), 427–442.
Gillie, M., Usmani, A. S., and Rotter, J. M. (2002). “A structural analysis of the first Cardington test.” J. Constr. Steel Res., 57, 581–601.
Gross, J. L., and McAllister, T. P. (2005), “Structural fire response and probable collapse sequence of the World Trade Center towers.” NIST NCSTAK 1-6, Gaithersburg, Md.
Lamont, S. (2001). “The behaviour of multi-storey composite steel framed structures in response to compartment fires.” Ph.D. thesis, Edinburgh Univ., Edinburgh, Scotland, ⟨www.civ.ed.ac.uk/research/fire/thesis.html⟩.
Levy, M., and Abboud, N. (2002). World Trade Center structural engineering investigation, Weidlinger Associates, New York.
Lew, H. S., Bukowski, R. W., and Carino, N. J. (2005). “Federal building and fire safety investigation of the World Trade Center disaster: Design, construction, and maintenance of structural and life safety systems.” NIST NCSTAR 1-1, Gaithersburg, Md.
University of Edinburgh (UOE). (2001). “Partners in Technology Report: Behaviour of steel framed structures under fire conditions.” Main Rep., Edinburgh, Scotland, http://www.civ.ed.ac.uk/research/fire/cardington.html .
Usmani, A. S. (2005). “Stability of the World Trade Center Twin Towers structural frame in multiple floor fires.” J. Eng. Mech., 131(6), 654–657.
Usmani, A. S., Chung, Y. C., and Torero, J. L. (2003). “How did the WTC towers collapse: A new theory.” Fire Saf. J., 38(6), 501–533.
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Copyright
© 2007 ASCE.
History
Received: Sep 8, 2005
Accepted: May 15, 2007
Published online: Dec 1, 2007
Published in print: Dec 2007
Notes
Note. Associate Editor: Venkatesh Kumar R. Kodur
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