Local Buckling of Long-Span Concrete Folded Plates

by Stuart E. Swartz, (M.ASCE), Assoc. Prof. of Civ. Engrg.; Kansas State Univ., Manhattan, Kansas,
Vernon H. Rosebraugh, (F.ASCE), Prof. of Civ. Engrg.; Kansas State Univ., Manhattan, Kans.,

Serial Information: Journal of the Structural Division, 1976, Vol. 102, Issue 10, Pg. 1981-1988

Document Type: Journal Paper


A simplified method for obtaining the load associated with the onset of local buckling in certain types of long-span end-supported concrete folded plate structures is presented. The method is applicable to structures with length to depth ratios greater than fifteen to one. The method considers the nonlinear material behavior of concrete and is based upon an application of the tangent modulus theory. Numerical examples are given which show that the proposed method yields conservative results when compared with elastic buckling analyses. The question of an appropriate factor of safety against buckling is mentioned and a tentative recommendation made that this be 2.2 when plate width to thickness ratios are less than 64 and the proposed method of analysis is used.

Subject Headings: Buckling | Concrete | Folded plates | Elastic analysis | Load factors | Concrete structures | Nonlinear analysis | Nonlinear response

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