Title:
Refined Model to Estimate Torsional Strength of
Reinforced Concrete Beams
Author(s):
M. Asghar Bhatti and Anan Almughrabi
Publication:
Structural Journal
Volume:
93
Issue:
5
Appears on pages(s):
614-622
Keywords:
concrete beams; finite elements; skew-bending theory; space
truss analogy; torsion; torsional resistance.
DOI:
10.14359/9720
Date:
10/1/1996
Abstract:
The finite element method (FEM) is an effective tool for studying the stress distribution in reinforced concrete beams throughout their loading history, including the ultimate state. Using a new stress-strain curve for softened concrete, failure of beams subjected to torsion is simulated. Based on the numerical results, a refined model is proposed to estimate the torsional strength of reinforced concrete beams. This model is shown to accurately predict the nonlinear relationship between torsional strength and the steel ratio for both under-reinforced and slightly over-reinforced beams.