Behavior of Restrained Two-Way Slabs.

Abstract
In many DOD applications, reinforced concrete slab-type structures are frequently not considered to have failed until deflections have reached values far beyond those that correspond to maximum resistance, but present analytical procedures, especially for dynamic loading conditions, do not adequately reflect the actual resistance deformation relations of slabs under large deflection conditions. The purpose of this work was to study the results of an earlier series of tests of small scale, laterally restrained two-way slabs, whose behaviors under uniform transverse load were measured out to the point of collapse, in an effort to formulate procedures for the prediction of the resistance functions for such slabs throughout their total response histories. While this objective was not fully met, it was found that present procedures are generally adequate to define the maximum resistance levels of such slabs. Additionally, detailed analysis of the experimental data suggests strongly the existence of systematic relationships which, when evaluated, will provide a basis for the prediction of large deflection slab behavior.

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