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Title |
Punching Shear Strength of Slab-Column Interior Connection Considering Anchorage Performance of Shear Reinforcements
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Authors |
정형석(Hyung-Suk Jung) ; 최현기(Hyun-Ki Choi) ; 정주홍(Joo-Hong Chung) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.2.51 |
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Keywords |
플랫플레이트; 뚫림전단; 전단보강재; 정착성능; 유한요소해석 Flat plate slab; Punching shear; Shear reinforcement; Anchorage performance; Finite element analysis |
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Abstract |
Flat plate slab is cost-efficient structural system widely used in high rise building, apartment and parking garages. But flat plate-column connections are so weak against punching shear failure that it may cause collapse of overall structure. In this study, spiral type shear reinforcement which increases the shear strength and ductility of the plate-column connection and has good workability was proposed. And experimental test was performed to verify the punching shear capacity of spiral type shear reinforcement. The current code does not accurately estimate the punching shear strength of slab-column connection with shear reinforcement because slab is so slender that punching failure may occurred before shear reinforcement reached yield stress. Therefore modified equation of ACI code for punching shear strength was proposed base on finite element analysis using LUSAS program, and data analysis from CEB-FIP database.
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