Finite Element Analysis of Slabs on Elastic Solids

A finite element method programmed for a high speed computer was developed for analyzing concrete slabs on an elastic continuum. The method differs from conventional in that an iterative scheme is employed. The iterative scheme has the major advantage of reducing the computer storage and can be used for analyzing two slabs with load transfer at the joint. A comparison between the finite element and the analytical solutions indicates that the finite element method is accurate enough for engineering applications. Comparisons of the stresses and deflections obtained by the method with those measured in the Arlington test for various conditions of loading and warping also show good agreements. It was found that the agreement based on full contact between the slab and the subgrade was not as good as that based on the assumption that part of the slab near to the edge is not in contact with the subgrade.