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Title |
Structural Performance of Precast Concrete Ribbed Slabs in Construction Stage
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Authors |
김철구(Chul-Goo Kim) ; 박홍근(Hong-Gun Park) ; 강수민(Su-Min Kang) |
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DOI |
https://doi.org/10.4334/JKCI.2020.32.5.481 |
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Keywords |
프리캐스트 콘크리트; 슬래브; 댑단부; 스트럿-타이 모델; 시공단계 precast concrete; slab; dapped end; strut-tie model; construction stage |
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Abstract |
In this study, structural performance was evaluated to verify the field applicability of precast concrete double-tee slabs with dapped ends. Shear and flexural tests of PC slabs were performed with main variables such as shape and shear reinforcement at dapped ends, flexural reinforcement ratio, and shear span to depth ratio. According to the test results, the shear capacity of dapped ends without shear reinforcement and the flexural capacity of the PC slabs can be reasonably estimated using the KCI model code. Since large stresses locally develop near reentrant corners of notches, shear reinforcement at dapped ends should be designed with a strut-and-tie model.
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