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http://dx.doi.org/10.7734/COSEIK.2019.32.3.165

Finite Element Analysis to Determine Shear Behavior of Prestressed Concrete Deep Beams  

Jin, Hui-Jing (Department of Architecture, Konkuk Univ.)
Kim, Han-Soo (Department of Architecture, Konkuk Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.32, no.3, 2019 , pp. 165-172 More about this Journal
Abstract
In this study, the shear strength of prestressed concrete deep beams is predicted using finite element analysis, and the variation in the shear strength according to the degree of prestressing is investigated. Numerical analysis results are compared with results obtained by the strut-and-tie model and associated experiments. Numerical analyses are performed on prestressed concrete deep beams with different values of concrete strength, effective prestress, ratio of tensile reinforcement, and shear span to effective depth ratio. The shear strength predicted by the numerical analysis is similar to the experimental value obtained, with an error of less than 5%. However, the strut-and-tie model highly overestimated the shear strength of prestressed concrete deep beams with a concentrated loading area. The ultimate shear capacity of prestressed concrete deep beams increased linearly with increasing prestresss applied to the tendon.
Keywords
deep beam; shear; prestressed; strut-and-tie; FEA; abaqus;
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