|
Title |
Evaluation of Flexural Performance for Prestressed Concrete Hollow Core Slabs
|
|
Authors |
이용준(Yong-Jun Lee) ; 김형국(Hyeong-Gook Kim) ; 김민준(Min-Jun Kim) ; 김동환(Dong-Hwan Kim) ; 김길희(Kil-Hee Kim) |
|
DOI |
https://doi.org/10.4334/JKCI.2020.32.2.193 |
|
Keywords |
휨강도; 중공 슬래브; 수평전단강도; 프리캐스트 콘크리트; 프리스트레스트 콘크리트 flexural strength; hollow core slabs; horizontal shear strength; precast concrete; prestressed concrete |
|
Abstract |
In this study, flexural tests were performed to evaluate the structural performance of prestressed concrete hollow core slabs (HCS). Four-point loading simple beam tests were performed for eighteen HCS specimens with the height of section and topping concrete as variables. As a result of the flexural tests, HCS showed the average flexural strength of about 14 % higher than the factored flexural strength according to KCI Model Code 2017, regardless of the topping concrete. In addition, the horizontal shear strength acting on the joint surface at failure obtained from the horizontal shear force of composite HCS was 1.01 to 1.22 times higher than KCI Model Code 2017 regardless of the height of section. It was confirmed that composite HCS satisfies the required horizontal shear strength even if only roughness is applied to the joint surface between topping concrete and HCS.
|