In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Learn More
Become an ACI Member
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.
American Concrete Institute 38800 Country Club Dr. Farmington Hills, MI 48331-3439 USA
Phone: 1.248.848.3700 Fax: 1.248.848.3701 Staff Directory
Chat with Us Online Now
Feedback via Email Phone: 1.248.848.3800
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: Trilinear Moment-Curvature Relationship for Reinforced Concrete Beams
Author(s): W. A. M. Alwis
Publication: Structural Journal
Volume: 87
Issue: 3
Appears on pages(s): 276-283
Keywords: beams (supports); bending; computer programs; deflection; cracking (fracturing); deformation; moment-curvature relationship; reinforced concrete; structural analysis; Design
Date: 5/1/1990
Abstract:A trilinear moment-curvature curve is constructed by depicting each of uncracked, cracked, and yielded behavior of reinforced concrete beams as linear segments. This curve and Branson's well-known formula for effective stiffness are qualitatively related to each other, and as a result the difference between predictions by the two modules is inherently bounded. Moment-curvature and load-deflection curves derived by Branson's formula and a recent nonlinear model by Bazant and Oh have been compared with those produced by the trilinear model for several example beams. Good agreement is observed among these models. The main advantage of the trilinear model is in computer applications related to analysis and design of reinforced concrete beams and frames.
Click here to become an online Journal subscriber