Effect of Openings on Lateral Buckling of Beams

by Alexander Coull, (F.ASCE),
Maria C. Alvarez,

Serial Information: Journal of the Structural Division, 1980, Vol. 106, Issue 12, Pg. 2553-2560

Document Type: Journal Paper


The present paper describes a series of test on slender model cantilever beams containing a set of rectangular or circular openings along the center line of the beam, in which the size and spacing of the opening were varied. The beams were subjected to tip shear loads, and results are given to illustrate the influence of the relative size of the openings on the buckling loads which were determined by a modified Southwell Plot. The experimental results have been compared with approximate theoretical values based on an equivalent beam flexural rigidity.

Subject Headings: Buckling | Beams | Load factors | Structural models | Cantilevers | High-rise buildings | Spacing | Flexural strength

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