Linearity in Limit Design of Orthotropic Slabs

by Harinatha B. Goli, Reader in Civ. Engrg.; Andhra Univ., Waltair, A.P., India,
Hans Gesund, (F.ASCE), Prof. of Struct. Engrg.; Univ. of Kentucky, Lexington, Ky.,

Serial Information: Journal of the Structural Division, 1979, Vol. 105, Issue 10, Pg. 1901-1915

Document Type: Journal Paper


Limit design of orthotropically reinforced concrete slabs can be carried out by means of the yield-line theory. The method, in general, is quite cumbersome. It can be simplified by taking advantage of a linear relationship between the total yield moment capacity of the slab and its collapse load. This linearity is demonstrated for slabs with unsymmetrical boundary conditions. It is shown that changes in geometry, boundary conditions, and coefficient of orthotropy will only change the slope of the graph, not its linear character, and that changes in the ratios of positive to negative reinforcement have little or no effect on the collapse load.

Subject Headings: Failure loads | Linear functions | Orthotropic materials | Slabs | Reinforced concrete | Load bearing capacity | Boundary conditions | Structural failures

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