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Title |
Experimental Study on Shear Capacity of I-slab System Using Slim Precast Slab Deck
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DOI |
https://doi.org/10.11112/jksmi.2017.21.1.126 |
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Keywords |
중공 슬래브 ; 프리캐스트 콘크리트 ; 슬래브 데크 ; 전단강도 Hollow slab ; Precast concrete ; Slab deck ; Shear strength |
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Abstract |
This paper presents the shear capacities of hollow slab with plate and octagonal pillar type hollow sphere. Recently, the interest in precast hollow slab system for buildings is growing up according to the demand for high quality control and the increase in slab thickness. A hollow slab system is widely known as one of the effective slab system which can reduce self-weight of slab. However, hollow slabs are vulnerable to the deterioration in the shear strength due to the decrease of concrete at slab web which resists shear. Especially, in case of precast hollow slabs, it has joint surface between precast concrete slab modules along transverse axis of slab, and shear failure, that is caused by cracks at joints, has to be prevented. Therefore, in this study, shear capacity of the I-slab system is evaluated by 3-points-supported shear test along the longitudinal and transverse axis of slab specimen. Test results showed that I-slab had enough shear strength compared to theoretical shear strength even if it included the joint surfaces.
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