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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: Elastic Frame Analysis-Corrections Necessary Design of Short Concrete Columns in Braced Framers
Author(s): Hajime Okamura, Shriniwas N. Pavay, John E. Breen and Phil M. Ferguson
Publication: Journal Proceedings
Appears on pages(s): 894-897
Keywords: bending moments; columns (supports); eccentricity; frma analysis; rienforced concrete; short columns; structural design.
Abstract:Ordinary frame analysis based on gross concrete sections generally leads to computed column mombert s and eccentricities at ultimate considerable in error (generally on the unsafe side) because of (1) the lower stiffness of the craxcked beam, (2) the loss of stiffness of th column concrete near ultimate, and (3) sometimes the yeilding of column compression steel on one face. Short columns in single curvatur in braced froames, analyzed by a computer procedure, show indicated eccentricities ranging from .52 to 2.08 times the nominal values obtained from ordinary moment distribution. Moment distribution procedures based on radical changes in calculated member stiffness are indicated as feasible and empirical corrections are also presented for columns in braced frames.
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