Time-Dependent Reinforced Concrete Slab Deflections

by Andrew Scanlon, Struct. Engr.; Reid Crowther and Partners Ltd., Edmonton, AB, Canada,
David W. Murray, (M.ASCE), Prof. of Civ. Engrg.; Univ. of Alberta, Edmonton, AB, Canada,

Serial Information: Journal of the Structural Division, 1974, Vol. 100, Issue 9, Pg. 1911-1924

Document Type: Journal Paper


A finite element analysis to determine time-dependent deflections of reinforced concrete slabs, including the effects of cracking, creep, and shrinkage, is presented. The analysis employs a 16-degree-of-freedom layered rectangular plate bending element, and uses a numerical time integration scheme to evaluate creep and shrinkage strains determined from CEB parameters. The initial strain technique is used in the solution procedure. Predicted results are compared with the limited experimental results in the literature.

Subject Headings: Reinforced concrete | Time dependence | Concrete slabs | Displacement (mechanics) | Finite element method | Creep | Shrinkage (material) | Strain

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