Composite Beams in Torsion

by Conrad P. Heins, Jr., Assoc. Prof.; Dept. of Civ. Engrg., Univ. of Maryland, College Park, MD,
John T. C. Kuo, Grad. Res. Asst.; Univ. of Maryland, College Park, MD,

Serial Information: Journal of the Structural Division, 1972, Vol. 98, Issue 5, Pg. 1105-1117

Document Type: Journal Paper


The experimental behavior of four 12 WF 27 sections in composite action with a reinforced concrete slab (2 in., 3 in., 4 in., 6 in. thick) by 36.0 in. wide, subjected to only an end torque is presented. The beams were tested with end supports pinned-pinned and fixed-pinned. The experimental data yielded torsional constants KT, Iw, rotations and strains. These results were then compared to the thin walled beam theory yielding good correlation. Approximate equations for evaluation of the torsional parameters are also presented.

Subject Headings: Composite beams | Torsion | Reinforced concrete | Beams | Structural behavior | Composite materials | Concrete slabs | Rotation

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