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Title |
The Effect of Anchorage with Shear Reinforcement in Flat Plate System
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DOI |
https://doi.org/10.4334/JKCI.2012.24.6.667 |
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Keywords |
플랫 플레이트 ; 전단보강체 ; 유효부착길이 ; 슬래브 두께 ; 콘크리트 강도 flat plate ; shear reinforcement ; effective anchorage length ; slab depth ; concrete strength |
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Abstract |
Flat plate are being used more in buildings requiring a high level of technical installations or in buildings needing changeable room arrangements during their life time such as office buildings. The main problem in flat plate is its weak resistance against a punching failure at its slab-column connections. Therefore, in this research, an experimental study on full-scale interior slab-column connection was performed. Three types of shear reinforcements were tested to prevent brittle punching shear failure that could lead to collapse of the structure. A series of four flat plate specimens including a specimen without shear reinforcement and three specimens with shear reinforcements were tested. The slabs were tested up to failure using monotonic vertical shear loading. The presences of the shear reinforcements substantially increased punching shear capacity and ductility of the interior slabcolumn connections. The test results showed that a slab that did not have enough bond length failed before shear reinforcement yielded due to anchorage slip. Also, FEM analyses were performed to study an effect of slab thickness and concrete compressive strength on the flat plate slab. The analytical study results were used to propose a method to calculate performance capacity of shear reinforcement in slab-column connection.
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