Title: Novel Truss Analogy Model to Predict Full Response of Reinforced Concrete Deep Beams

Author(s): Mustafa M. Raheem and Hayder A. Rasheed

Publication: Structural Journal

Volume: 119

Issue: 4

Appears on pages(s): 97-108

Keywords: deep beams; nonlinear analysis; reinforced concrete; truss analogy

DOI: 10.14359/51734655

Date: 7/1/2022

Abstract:
In this study, a first attempt is established to develop a rational yet simplified truss analogy approach to predict the full response of reinforced concrete deep beams. Bilinear load-deflection curve is characterized by two key points—namely, yielding and ultimate. Timoshenko’s first-order shear deformation theory is invoked to linearize the strain profile by including the shear strain contribution. Based on the levels of strain in different truss members, a nonlinear analysis scheme is devised to compute the yielding and ultimate load and displacement. Comparisons with a wide range of shear span-depth ratios in tested beams are successfully made. Predictions of the response and failure modes are found to agree with experimental observations.