Reinforced Concrete Beams with Small Opening in Bending and Torsion

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Title: Reinforced Concrete Beams with Small Opening in Bending and Torsion

Author(s): M.A. Mansur and P. Paramasivam

Publication: Journal Proceedings

Volume: 81

Issue: 2

Appears on pages(s): 180-185

Keywords: beams (supports); bending; compression; failure; openings; rectangular beams; reinforced concrete; strength; structural analysis; tests; torsion.

Date: 3/1/1984

Abstract:
A method of analysis is presented for predicting the strength of reinforced concrete beams that are subjected to combined bending and torsion and contain a smalI transverse opening. The analysis is based on the famihar skew-bending model. Strength equations are derived for failure Modes 1, 2, and 3 by assuming a suitable pattern reinforcement around the opening. Test results of 10 beams containing a circular opening are also presented and discussed. The theoretical predictions are in good agreement with the test results.