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Computational simulation of the thermal effects on composite slabs under fire conditions. (English) Zbl 07363371
Summary: A computational model is presented to evaluate the thermal effects on composite slabs with still deck, originated by standard fire exposure. Composite slabs with profiled steel deck are widely used in buildings which require fire resistance. Computational simulations are of great importance in this field and consist of an alternative to experimental fire tests that are expensive, time-consuming and require semi-specialized technical equipment. However, computational simulations must be reliable and realistic. The resulting transient and non-linear thermal problem is solved by the Finite Element Method in ANSYS and Matlab. The finite element models are three-dimensional, full scale, and multi-domain. Additionally, the models also include an air gap between the steel deck and the concrete part of the slab, in order to simulate the thermal effects induced by the debonding between the steel deck and the concrete, verified in previous experimental investigations. The results of the numerical simulations are validated against the results of experimental fire tests. The fire resistance of the composite slabs determined computationally is also compared with simplified calculation methods available in standards.
MSC:
68-XX Computer science
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[1] Abdel-Halim, MAH; Hakmi, MR; O’Leary, DC, Fire resistance of composite floor slabs using a model fire test facility, Eng. Struct., 21, 176-182 (1999)
[2] ABNT: NBR 14323 - structural fire design of steel and composite steel and concrete structures for buildings [in Portuguese] (2013)
[3] ANSYS: \( \text{ANSYS}\) Mechanical \(\text{ APDL } , 18.2\), help system, Thermal Analysis Guide, ANSYS, Inc
[4] CEN: EN 1991-1-2: Actions on structures - part 1-2: General actions - action on structures exposed to fire (2002)
[5] CEN: EN 1993-1-2: Design of steel structures. part 1-2: General rules - structural fire design eurocode (2002)
[6] CEN: EN 1992-1-2: Design of concrete structures. part 1-2: General rules - structural fire design (2004)
[7] CEN: EN 1994-1-2: Design of composite steel and concrete structures. part 1-2: General rules - structural fire design (2005)
[8] ECCS: Calculation of the fire resistance of composite concrete slabs with profiled steel sheet exposed to the standard fire (1983)
[9] Franssen, J.M.: SAFIR - A thermal/structural program modelling structures under fire. In: NASCC 2003 (2003)
[10] Hamerlinck, A.F.: The behaviour of fire-exposed composite steel/concrete slabs. Ph.D. Thesis, Eindhoven University of Technology (1991)
[11] ISO: International standard ISO 834 - fire-resistance tests: Elements of building construction (1975)
[12] Reddy, JN; G, D., The Finite Element Method in Heat Transfer and Fluid Dynamics (2010), Boca Raton: CRC Press, Boca Raton
[13] Jiang, J., Main, J.A., Sadek, F.H., Weigand, J.M.: Numerical modeling and analysis of heat transfer in composite slabs with profiled steel decking. Tech. Rep. (2017)
[14] Jiang, J.; Pintar, A.; Weigand, JM; Main, JA; Sadek, F., Improved calculation method for insulation-based fire resistance of composite slabs, Fire Saf. J., 105, 144-153 (2019)
[15] Li, GQ; Zhang, N.; Jiang, J., Experimental investigation on thermal and mechanical behaviour of composite floors exposed to standard fire, Fire Saf. J., 89, 63-76 (2017)
[16] Lim, L., Wade, C.: Experimental fire tests of two-way concrete slabs—fire engineering research report 02/12. Tech. Rep., University of Canterbury (2002)
[17] MathWorks: Partial Differential Equation \(\text{ Toolbox }\) User’s Guide, Heat Transfer Problem with Temperature-Dependent Properties, The MathWorks, Inc
[18] Prates, L.M.S.: Numerical simulation of the fire behaviour of composite strucures (slabs) [in Portuguese]. Master’s Thesis, Politechnic Institute of Bragan ça (2018)
[19] Shampine, LF; Reichelt, MW, The MATLAB ODE suite, SIAM J. Sci. Comput., 18, 1, 1-22 (1997) · Zbl 0868.65040
[20] Yu, X.; Huang, Z.; Burgess, I.; Plank, R., Nonlinear analysis of orthotropic composite slabs in fire, Eng. Struct., 30, 1, 67-80 (2008)
[21] Yunus A. Cengel, A.J.G.: Heat and Mass Transfer: Fundamentals and Applications. McGraw-Hill Education, Europe (2014)
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