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
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: Prestressed Concrete Beams Under
Combined Torsion, Bending, and Shear
Author(s): Alfred Bishara
Publication: Journal Proceedings
Appears on pages(s): 522-524
Keywords: beams (supports) ; bending; interaction diagram; prestressed concrete; research; shear strength; torsion; ultimate strength method; web reinforcement.
Abstract:Presents an experimental investigation on the behavior and ultimate capacity of prestressed concrete beams of rectangular, I and T cross sections, with web reinforcement, subjected to the simultaneous combined action of torsion, bending, and shear. The elastic and plastic behavior of 24 beams tested was analyzed and the rupture criteria defined. Neither th e cracking load nor the ultimate capacity could be satisfactorily predicted by Saint Venant’s elastic torsion theory and the principal stress criterion. The variation in the ultimate capacity for each group of beams having the same cross section is illustrated using nondimensional interaction curves. An empirical expression for calculating the pure torsional strength of prestressed concrete members has been developed. For sections where the moment/shear value is constant, empirical expressions have been developed to define the relation between torque and moment, and torque and shear, at ultimate capacity.
Click here to become an online Journal subscriber