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Title |
Evaluation of Shear Behavior of One- and Two-Directional Hollow-core Slabs
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Authors |
이혜정(Hyejeong Lee) ; 손현실(Hyeon-Sil Son) ; 조승호(Seung-Ho Cho) ; 노영숙(Young-Sook Roh) |
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DOI |
https://doi.org/10.4334/JKCI.2018.30.6.565 |
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Keywords |
중공 슬래브 ; 일방향성 슬래브 ; 이방향성 슬래브 ; 전단 성능 ; 중공률 Hollow-core Slab ; One-Directional Slab ; Two-Directional Slab ; Shear Behavior ; Hollow Rate |
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Abstract |
Hollow-core slabs are slabs with voids in the middle of the slab section that do not have critical effect on bending capacity. With hollow-core slabs, long-span structure of concrete is possible according to reduction in volume of concrete and serviceability is increased because effective depth is deeper than that of a normal slab. The bending capacity of hollow-core slabs has been verified through many studies, but safety in terms of shear capacity according to the size of the effective cross section has not yet been properly clarified. The goal of this study is to evaluate shear capacity depending on continuity of hollow-core and hollow rate and to propose an ideal hollow rate. In this experiment, it is shown that experimental shear capacity of all specimens is similar to or exceeds expected shear capacity as determined using KCI code. And, discontinuous hollow-core slabs have higher shear capacity than continuous hollow-core slabs when they have similar hollow rate. Moreover, it is suggested that the ideal hollow rate will not exceed 35 %.
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