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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: Strength of Prestressed Concrete I-Beams in Combined Torsion and Bending
Author(s): B. Vijaya Rangan and A. S. Hall
Publication: Journal Proceedings
Appears on pages(s): 612-618
Keywords: beams 9supports);bending;bend tests;flanges;I-beams;prestressed concrete; prestressing steels;shear properties;shear tests;torsion;torsion tests.
Abstract:Tests on 22 prestressed concrete I-beams are reported. Most beams were tested in bending and torsion, but four also carried shear. Seven beams had einforcement linking the flanges to the webs; and fifteen had no such reinforcement. Strength theories are developed for both types of beams. It is concluded that flange reinfocement in I-beams is essential since without it the flanges add little to the strength of the web alone, and may even be detrimental. Building codes rules should perhaps take account of this.
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