Lower Bound Solutions for Continuous Orthotropic Slabs

by B. Vijaya Rangan, (M.ASCE), Lect.; Dept. of Struct. Engrg., Univ. of New South Wales, Sydney, Australia,

Serial Information: Journal of the Structural Division, 1973, Vol. 99, Issue 3, Pg. 443-452

Document Type: Journal Paper


Lower-bound solutions (prediction equations) to the collapse of rectangular, orthotropically-reinforced, concrete slabs under uniform load are (developed for) given for: (1) slab continuous on the shorter sides and simply supported on the longer sides; and (2) slab continuous on all sides. The lower-bound collapse loads calculated for a range of coefficients of orthotropy and ratio of width to length of slab, agree closely with the upper-bound values derived from the yield line theory. Simple equations are given for moment fields, collapse loads, and edge-beam forces which are useful in the design of such slabs.

Subject Headings: Failure loads | Structural failures | Orthotropic materials | Slabs | Material failures | Concrete slabs | Moment (mechanics) | Beams

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