Title: Analysis of Reinforced Concrete Beams Subjected to Severe Concentrated Loads

Author(s): T. Krauthammer, S. Shashriar Rauthammer, and H. M. Shanaa

Publication: Structural Journal

Volume: 84

Issue: 6

Appears on pages(s): 473-480

Keywords: beams (supports); collapse; columns (supports); deflection; failure; flexural strength; loads (forces); moment-curvature relationship; reinforced concrete; reinforcing steels; shear strength; structural analysis; Structural Research

DOI: 10.14359/2786

Date: 11/1/1987

Abstract:
Paper presents several modifications to existing analytical methods for predicting the behavior of reinforced concrete beams under severe concentrated loads. The modifications include failure criteria for the cross section at the collapse condition, formation and development of plastic hinges, and influence of shear on flexural performance of the beam. Based on this approach, it is possible to study the response of reinforced concrete beams under the combined influence of flexure, shear, and axial thrust from the onset of loading to collapse. The procedure was used to derive moment-curvature and load-deflection relationships that compared well with the available experimental data. For the 29 cases examined here, the numerical results for collapse deflections were on average within 5 percent of the experimental measurements, and the average computed collapse loads were within 2 percent of the experimental data.