Columns and Beams Braced by Diaphragms

by Samuel J. Errera,
George Pincus,
Gordon P. Fisher,

Serial Information: Journal of the Structural Division, 1967, Vol. 93, Issue 1, Pg. 295-318

Document Type: Journal Paper


Shear-resistant light-gage metal diaphragms, such as wall cladding, roof decking, and floor panels, often are connected directly to beams or columns of a steel framework. Using an energy approach, analytical methods are developed for predicting the buckling strength of individual diaphragm-braced I-section members in the plane of the diaphragm. Sixteen tests of centrally loaded double-column assemblies with diaphragm bracing on one or both flanges, and eight tests of double-beam assemblies with diaphragm bracing on the compression flange, give satisfactory agreement with theoretical results. Theory and test results both indicate that shear-resistant diaphragms can be effective in increasing the buckling load of slender columns and beams.

Subject Headings: Beam columns | Load tests | Steel columns | Bracing | Diaphragms (structural) | Shear resistance | Steel decks | Steel frames

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