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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Analysis of Restrained Reinforced Concrete Columns Under
Author(s): Robert F. Manuel and James G. MacGregor
Publication: Journal Proceedings
Appears on pages(s): 12-24
Keywords: beams (structural); building codes; columns (structural);computation; creep (materials); deflection; frames; reinforced concrete; stablity; structural analysis; structural engineering.
Abstract:The primary objective of this investigation was the derivation of a method of analysis which can be used on a computer to determine the behavior of columns in reinforced concrete frameworks under sustained load. The method of analysis applied discreteness to the cross sections, the member lengths, and the duration of sustained load, and utilizes numerical integration and trial and error procedure to obtain equilibrium configurations of the frameworks under load. A nonlinear stress-creep strain function was considered using the rate of creep method to estimate the creep of the concrete under variable stress. The applicability of the analysis was partially verified by comparison with experimental data reported by various investigators. The analysis was used to study the sustained load behavior of two series of laterally restrained beam column frames and the results were compared to three building codes.
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