Time‐Dependent Analysis and Design of Composite Columns
Publication: Journal of Structural Engineering
Volume 116, Issue 12
Abstract
The instantaneous and time‐dependent behavior of composite steel‐concrete columns subjected to eccentric axial load is examined analytically. The age‐adjusted effective modulus method is used for the analysis of individual cross sections to include the time‐dependent effects of creep and shrinkage in the concrete. Cracking of the concrete is also included. An iterative procedure is described to successively adjust the secondary moments as the geometry of the column changes with time. Agreement between analytical results and experimental measurements is shown to be good. Finally, a design‐oriented procedure is proposed for estimating the maximum acceptable service load on a slender, eccentrically loaded composite column. This approach uses a factored strength prediction developed elsewhere that is described in the paper. The design‐oriented procedure may be implemented readily on a hand calculator.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 116 • Issue 12 • December 1990
Pages: 3338 - 3357
Copyright
Copyright © 1990 ASCE.
History
Published online: Dec 1, 1990
Published in print: Dec 1990
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