DOI QR코드

DOI QR Code

일방향 중공 슬래브의 구조성능 평가에 대한 실험적 연구

An experimental Study on the Structural Performance Evaluation of One-way Hollow Core Slab

  • Kim, Dong Baek (Dep. of Civil, Safety & Environment Eng., Hankyong National University) ;
  • Song, Dae Gyeom (Dep. of Civil, Safety & Environment Eng., Hankyong National University) ;
  • Choi, Jung Ho (Dep. of Civil, Safety & Environment Eng., Hankyong National University) ;
  • Cho, Hyun Sang (Dep. of Civil, Safety & Environment Eng., Hankyong National University)
  • 투고 : 2018.07.29
  • 심사 : 2018.09.18
  • 발행 : 2018.09.30

초록

연구목적: 최근 기반시설물이 대형화 됨에 따라 콘크리트 구조물의 경우는 중량감소를 위하여 중공 슬래브가 대안의 하나로 제시되고 있다. 연구방법: 중공부재의 시공 시 부력으로 인하여 시공이 어려운 점과 콘크리트 단면적이 줄어 전단성능이 부족하게 되는 구조적인 단점이 있으므로, PVC관과 같은 중공체를 이용하여 일방향 슬래브를 제작하고 시공성과 구조성능을 검토하는 실험을 실시하였다. 연구결과: PVC관을 이용한 일방향 중공슬래브의 경우 부력방지장치를 이용하면 타설 시 발생하는 중공체의 부상 및 침강을 예방하여 시공성능이 크게 개선되었으며, 휨 및 전단성능도 적합한 성능을 가진 것으로 확인되었다. 결론: 중공율과 휨성능은 큰 관계가 없지만 중공율이 큰 경우는 항복 후 2차 강성이 낮으므로 이에 대한 고려가 필요하며, 중공율의 증가에 따른 전단성능의 감소는 전단철근을 배근하면 보완될 수 있을 것으로 사료된다.

Purpose: Recently, As the size of the structure increased, the necessity of reducing its weight was raised. To reduce weight In concrete structures, a hollow slab is proposed as an alternative for weight reduction effect. Method: It is difficult to construct the hollow body due to buoyancy, and the shear performance is insufficient due to the decreased cross section. Slabs were fabricated using unidirectional hollow bodies such as PVC pipes, and experiments were conducted about construction performance and structural performance. Results: The buoyancy preventive device has been improved the construction performance by preventing floating hollow body, it has been confirmed that it has adequate performance to be used as a hollow slab system because it has enough expected shear performance. Coclusion: Hollow ratio has a little connection with bending performance, but after the yielding load, it is necessary to consider the secondary stiffness of structure, and is is supposed that the decrease of shear performance with the increase of hollow core ratio can be complemented with shear reinforcement.

키워드

참고문헌

  1. Son Min Seo, Kim Byung Jeon, Yoon Sung Ho, No Young Gon, et al., (2010), "Structural Performance of Hollow Core Slab made use of Light Bonding Material", The Autumn Conference of Architectural Institute of Korea, Vol.30, No.1, pp.113-114.
  2. Park Young Mi, Yoo Yeon Ho, Han Sang Hwan, (2009), "Shear Strength of Spread Floor Slab System with Hollow Core", The Autumn Conference of Korea Concrete Institute, Vol.25, No.2, pp.7-8
  3. Kim Soo Bong, Kim Soon Muk, Lee Sang Gyun, Kim Sang Mo, (2011), "Study and Application of One Way Hollow Core Slab System for reduction self-weight and Construction Cost", Architectural Institute of Korea, Structural Division, Vol. 15, No.5, pp.45-53
  4. Han Gun Ho, Kim Sang Dae, Kim Sang Mo, Joo Young Gyu, (2011), "Shear Performance Evaluation of DECK Type Hollow Core Slab", Korean Society of Hazard Mitigation, Vol. 11, No.4, pp.1-7
  5. Jung Joo Hong, Lee Seung Chang, Choi Chang Sik, Choi Hyeon Gi, (2010), "One way Shear Strength of Doughnut Type Two Way Hollow Core Slab Considering Hollow core Material and shape", Conference of Korea Institute Concrete, Vol. 24, No. 4, pp.391-398