Short- and Long-Term Deflections in Reinforced, Prestressed, and Composite Concrete Beams

Abstract

A model that calculates both short- and long-term deflections (i.e., transverse deflections and section rotations) in reinforced, prestressed (or posttensioned) and composite concrete beams with generalized end conditions subjected to bending about any transverse axis proposed. The effects of creep, shrinkage, and tension stiffening in the concrete and flexural rotational restraints at the beam extremes are included in the proposed model. The model is limited to beams in which torsional moments or deformations along the member are not induced by the externally applied loads or by the prestressing or posttensioning. The moment–curvature