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
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
Chat with Us Online Now
Feedback via Email
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: Softening of Concrete in Torsional Members- Design
Author(s): Thomas T. C. Hsu and Y. L. MO
Publication: Journal Proceedings
Appears on pages(s): 443-452
Keywords: angle of twist; beams (supports); building codes; cover; cracking
Ifracturing); reinforced concrete; reinforcing steels; shear properties; strains;
trength; stresses; stress-strain relationships; structural design; thickness; tor-ion.
Abstract:Based on equilibrium and compatibility conditions, as well as a new stress-strain relationship for softened concrete, a new truss model theory was presented in the first paper of the series. This model accurately predicts the torsional behavior of the 108 test beams available in the literature. The theory, however, is too complex for design purposes. In this second paper of the series, several simplifications for design are considered. They include a simple but accurate formula to obtain the effective depth of wall thickness and three design limitations for over-reinforcement, minimum reinforcement, and concrete cover. A complete set of design recommendations is proposed for torsional reinforced concrete members and is illustrated by two example problems.
Click here to become an online Journal subscriber