Research Article
Dec 1980
Combined Torsion, Bending, and Shear on L-Beams
Publication: Journal of the Structural Division
Volume 106, Issue 12
Abstract
Tests are reported on 15 semicontinous L-beams with stirrups under concentrated loads creating torsion combined with flexure and shear. The main variables were the amount of stirrups, torque-to-shear ratio, and the ratio of support moment to the span moment. The ultimate capacities of these beams could be predicted by the interaction proposed by Behera and ferguson. However, these tests indicate lower stresses at first diagonal cracking for beams with larger depth-to-width ratios. The postcracking torsional stiffness is only a small fraction of the precracking stiffness. Strain-gage measurements indicate that the stress induced by torsion alone (stress at a point of inflection) varies with torque in a manner similar to the variation of the twist angle. At the maximum moment section, the additional stress due to torque can be conservatively estimated as the stress at a point of inflection.
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Published In
Journal of the Structural Division
Volume 106 • Issue 12 • December 1980
Pages: 2475 - 2492
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Dec 1980
Published online: Feb 1, 2021
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K. S. Rajagopalan, F.ASCE
Vice Pres., Mullen & Powell, Inc., Consulting Engrs., Dallas, Tex.;also Adjunct Prof. of Civ. Engrg., Southern Methodist Univ., Dallas Tex.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.