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Title |
Punching Shear Strength of the Void Transfer Plate
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Authors |
한상환 ; 박진아 ; 김준삼 ; 임주혁 ; 박영미 |
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Keywords |
전이슬래브 시스템 ; 중공부 ; 뚫림 전단 ; 실험 ; 위험단면 transfer slab system ; void section ; punching shear ; experiment ; critical section |
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Abstract |
The transfer slab system is a structural system that transfers the loads from the upper shear wall structure to the lower columns. This is a costly system due to a very thick slab, and the relatively high cost can be mitigated by introducing voids in the slab. However, this system of flat plate containing voids is vulnerable to brittle failure caused by punching shear in vicinity of slab-column connection. Thus, the punching shear capacity of the void system is very important. However, the current code doesn't provide a clear design provision for the strength of slabs with a void section. In this study, experimental study was conducted to investigate the punching shear strength of the void slab system. The shear strength of the specimens was predicted by current code and previous researches. In result, the punching shear strength of the void system is determined as the least value calculated at critical section located a distance d/2 from the face of the column and the center of the void section using the effective area at critical section.
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