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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: Influence of Cross-Sectional Size on Seismic Performance of Reinforced Concrete Columns
Author(s): Alireza Nojavan, Arturo E. Schultz, Shih-Ho Chao, and Curt B. Haselton
Publication: Structural Journal
Appears on pages(s): 311-321
Keywords: bar buckling; cross-sectional size; reinforced concrete column
Abstract:Current ACI code provisions (ACI 318-14) for the design of reinforced concrete (RC) columns are based on previous experiments on column specimens that featured smaller cross-sectional dimensions compared to those currently used in mid- or high-rise buildings. A study on a database of RC columns, including those recently tested at the MAST Laboratory of the University of Minnesota and the ACI 369 Rectangular Column Database, suggests that flexural moment capacity, drift ratio capacity, and displacement ductility of columns are not generally affected by column dimension (that is, cross-sectional depth). However, longitudinal bar buckling can start earlier in larger columns. Additionally, observations from the MAST tests reveal a bar buckling mode that is seldom observed in tests on smaller columns, in which the bars buckle parallel to the face of the column. A simple study suggests that larger columns are more prone to this in-plane mode of bar buckling.
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