Utilization of triaxial stress fields in plastic shear solutions for confined RC members

L.C. Hoang, U.G. Jensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch


For circular concrete members shear reinforced with hoops or spiral, confinement effects are present. In shear design models confinement is usually neglected. In this paper, it is shown how the confinement reinforcement can be utilized to develop plastic solutions for the shear capacity of circular concrete members. A lower bound solution is derived by assuming a triaxial diagonal compression stress field to develop in the shear zone. The paper demonstrates that it is possible to obtain shear strength, which exceeds the upper limit predicted by the existing plastic solutions for rectangular beams in plane stress conditions. An upper bound solution coinciding with the lower bound solution is also presented. The solutions are compared with test results containing large amount of hoops. Good agreement has been found. © 2010 Taylor & Francis Group, London.
Original languageEnglish
Title of host publicationStructures & Architecture
PublisherCRC Press
Publication date2010
ISBN (Print)978-0-415-49249-2
ISBN (Electronic)978-1-4398-6297-1
Publication statusPublished - 2010
Externally publishedYes
Event1st International Conference on Structures & Architecture - Guimaraes, Portugal
Duration: 21 Jul 201023 Jul 2010
Conference number: 1


Conference1st International Conference on Structures & Architecture


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