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: Structural Concrete Beam Shear - Still a Riddle?
Author(s): M.W. Braestrup
Publication: Special Publication
Appears on pages(s): 327-344
Keywords: beams; failure; plasticity; shear; structural.
Abstract:The paper reviews the application of classical plasticity theory to shear
failure of structural concrete beams. The resistance of concrete to shearing deformations is described by the modified Coulomb failure criterion. For beams with shear reinforcement, this leads to an upper bound solution based on yield lines minimizing the combined work of yielding stirrups and cracking concrete, the coinciding lower bound solution corresponding to an inclined compression field (the web-crushing criterion). For beams without shear reinforcement, the optimal failure mechanism is a single yield line (straight or hyperbolic) from load to support, the coinciding lower bound solution corresponding to a compressive strut between the load and support platens. The predicted failure mechanisms and ultimate loads are compared with experimental evidence, and it is concluded that the plasticity approach goes a long way toward solving the riddle of shear failure.
Click here to become an online Journal subscriber