Finite Element Analysis of Reinforced Concrete Slabs

by Jan C. Jofriet, Res. Asst.; Solid Mech. Div., Univ. of Waterloo, Waterloo, Ontario, Canada,
Gregory M. McNeice, Asst. Prof.; Solid Mech. Div., Univ. of Waterloo, Waterloo, Ontario, Canada,

Serial Information: Journal of the Structural Division, 1971, Vol. 97, Issue 3, Pg. 785-806

Document Type: Journal Paper


The bending analysis of reinforced concrete slabs by the finite element method is presented. The analysis concentrates on the nonlinear behavior due to progressive cracking of a slab and does not include post-yield behavior. The Branson and Beeby methods are explored for estimating the rigidity of a cracked concrete region. The latter is found to yield better results. In order to deal with cracking in any arbitrary direction, suggestions are made for the transformation of the matrix of flexural rigidities and for the determination of equivalent steel areas with respect to the orientation of the cracks in a region. Some results are presented to demonstrate the proposed method.

Subject Headings: Finite element method | Reinforced concrete | Cracking | Concrete slabs | Slabs | Rigidity | Nonlinear analysis | Nonlinear response

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