Research Article
Jan 1982
Tests of Composite Beams with Web Openings
Publication: Journal of the Structural Division
Volume 108, Issue 1
Abstract
An experimental investigation to study composite beams with rectangular web openings is presented. Six composite beams and one steel beam were tested. W14 × 34, W18 × 45 and W18 × 46 sections were used. Opening sizes were fixed, with depths equal to 60 percent of the steel beam depth and lengths equal to twice the opening depth. Concrete slab dimensions were held constant. Opening locations were varied to investigate moment-shear ratios ranging from 3 to 33 feet (0.9 to 10 m). Web openings reduce the strength of composite beams. Beams with high moment-shear ratios fail by general yielding in the steel below the neutral axis and crushing in the concrete. Beams with medium to low moment-shear ratios fail by the formation of plastic hinges in the steel below the opening, accompanied by a diagonal tension failure in the concrete slab. The concrete in composite beams contributes significantly not only to the flexural strength, but also to the shear strength of the beams at web openings.
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Information
Published In
Journal of the Structural Division
Volume 108 • Issue 1 • January 1982
Pages: 145 - 162
Copyright
© 1982 American Society of Civil Engineers.
History
Published in print: Jan 1982
Published online: Feb 1, 2021
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Authors
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William C. Clawson, AM.ASCE
Research Engr., Exxon Production Research Co., Houston, Tex.
David Darwin, M.ASCE
Assoc. Prof. of Civ. Engrg., University of Kansas, Lawrence, Kans.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
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.