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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: Prediction of the Inelastic Behavior
of One-Way Continuous Slabs
Author(s): B. V. Subrahmanyam
Publication: Journal Proceedings
Appears on pages(s): 621-634
Keywords: crack width and spacing; deflection; loads (forces); moment distribution; one-way slabs; reinforced concrete;moment-curvature relationship.
Abstract:One-way continuous slabs designed according to the redistributions permitted by ACI 318 have considerable reserve load-carrying capacity because of their large plastic rotation capacities. Methods are necessary for reliable prediction of the behavior of one-way continuous slabs so that a more realistic and economical design basis can be developed. This paper reports tests on two-span continuous slabs designed with different degrees of redistribution. Utilizing the results of these tests and those of tests reported in literature, it is established that trisegmental M-+ relations give excellent predictions of the inelastic behavior of one-way continuous slabs at all the limit states (deflection, crack width, and plastic rotation compatibility). In contrast, bilinear relations and constant stiffness assumption give poor and even unsafe predictions and hence are shown to be unreliable.
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