External vertical prestressing rebars (EVPRs) can effectively improve shear strength of concrete structures by the way of providing vertical compressive stress to the concrete and acting as stirrups. The objective of this study is to obtain a shear strength prediction model of EVPRs strengthening concrete beam without transverse reinforcement enhanced by modifying the ACI-318 and Critical Shear Crack Theory (CSCT). At the same time, this article analyzes the contribution of the strength of the shear strength, including the EVPRs as stirrups, compression zone of concrete, dowelling action, aggregate interlock and residual tensile strength. The results indicate that the shear strength prediction model can fit well with the experimental data and EVPRs can effectively enhance shear strength.
Theoretical Formula of Ultimate Shear Strength for RC Beams without Transverse Reinforcement by Using External Vertical Prestressing Rebars
KSCE J Civ Eng
KSCE Journal of Civil Engineering ; 25 , 7 ; 2522-2533
2021-07-01
12 pages
Article (Journal)
Electronic Resource
English
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