Abstract
The effect of intermediate diaphragms on the distribution of longitudinal bending moments in beam-and-slab bridges has been studied previously. In the present paper, that work is extended so as to cover the effect of such diaphragms on transverse moments, shear forces, and support reactions.A method is developed which uses two non-dimensional parameters. The method enables the designer to obtain the necessary design information for bridges having any number of intermediate diaphragms of widely different stiffnesses, without having to do a separate analysis for each case. Key words: beam-and-slab bridge, diaphragm, cross-frame, grillage analogy, finite element method, orthotropic plate theory.
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