Shear strength of prestressed concrete beams considering bond mechanism in reinforcement
Lee D. Han S.-J. Ju H. Kim K.S.
May 2021American Concrete Institute
ACI Structural Journal
2021#118Issue 3267 - 277 pp.
According to traditional theory, there should be shear stresses in the cracked tension zone due to the presence of bond between longitudinal tension reinforcements and surrounding concrete. To investigate the effect of this bond mechanism on shear behaviors of prestressed concrete (PSC) members with and without shear reinforcement, the dual potential capacity model (DPCM) was adopted in this study. The size effect typically observed in large PSC members was also considered in the proposed method by addressing the shear crack concentration concept. Verifications of the proposed model were conducted using the extensive shear database of PSC members with various material properties and geometrical details. As an extreme case, the perfect-slip behavior (no bond condition) between a prestressing strand and surrounding concrete in unbonded post-tensioned (UPT) concrete members was considered in the proposed model, and their analytical results were used to identify how the bond mechanism affects the shear strengths and failure modes of PSC members. Copyright
Aggregate interlocking , Concentration , Crack , Flexure , Prestressed concrete , Shear
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Department of Architectural Engineering, Chungbuk National University, Cheongju, South Korea
Department of Architectural Engineering, University of Seoul, South Korea
Department of Civil and Environmental Engineering, School of Engineering and Digital Sciences at, Nazarbayev University, Astana, Kazakhstan
Department of Architectural Engineering, Smart City Interdisciplinary Major Program, University of Seoul, South Korea
Department of Architectural Engineering
Department of Architectural Engineering
Department of Civil and Environmental Engineering
Department of Architectural Engineering
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