Thermal Effects on Load Capacity of Concrete Slabsby Nestor R. Iwankiw, (A.M.ASCE), Manager and Research Engineer; Structural Analysis, Engrg. Div., Illinois Inst. of Tech. Research Inst., Chicago, Ill.,
Serial Information: Journal of the Structural Division, 1979, Vol. 105, Issue 7, Pg. 1417-1433
Document Type: Journal Paper
The summary of an approach for a limit analysis in a fire environment of a two-way reinforced concrete rectangular slab containing fixed edges along the four sides is presented. The yield line theory of structural analysis for determination of the ultimate load-carrying capacity of reinforced concrete slabs was extended to include high temperature effects. Large displacements, membrane action, temperature-dependent mechanical properties, and thermally induced strains were taken into account. A FORTRAN computer program based on the analysis was written and validated. A short parametric study was conducted with the developed analytical method to determine the influence of slab aspect ratio and of two temperature profile parameters on the ultimate load capacity.
Subject Headings: Load bearing capacity | Thermal loads | Concrete slabs | Load factors | Reinforced concrete | Temperature effects | Thermal analysis
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