Nonuniform Torsion of Composite Beams

by Paul F. McManus,
Charles G. Culver,

Serial Information: Journal of the Structural Division, 1969, Vol. 95, Issue 6, Pg. 1233-1256

Document Type: Journal Paper


The general expressions governing the behavior of a beam of composite, open, thin-walled cross section subjected to nonuniform torsion are developed. These expressions are rewritten in series form for the case in which the cross section is composed of a series of flat plates of different materials. Numerical results are presented for a composite tee-section consisting of a concrete slab connected to a WF beam. These results indicate a significant increase in the torsional resistance of such sections due to composite action. Equations for determining the torsional properties of composite sections used in buildings and bridges are also presented.

Subject Headings: Composite beams | Torsion | Cross sections | Composite bridges | Structural behavior | Plates | Numerical methods | Concrete beams

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