One-Way Shear Strength of Donut Type Biaxial Hollow Slab Considered Hollow Shapes and Materials

중공형상 및 재료의 영향을 고려한 도넛형 이방향 중공슬래브의 일방향 전단강도

  • Chung, Joo-Hong (Dept. of Sustainable Architectural Engineering, Hanyang University) ;
  • Lee, Seung-Chang (R&D Center Samsung C&T Corporation) ;
  • Choi, Chang-Sik (Dept. of Architectural Engineering, College of Engineering, Hanyang University) ;
  • Choi, Hyun-Ki (Dept. of Sustainable Architectural Engineering, Hanyang University)
  • 정주홍 (한양대학교 건축환경공학) ;
  • 이승창 (삼성물산(주) 기반기술연구소) ;
  • 최창식 (한양대학교 건축공학과) ;
  • 최현기 (한양대학교 건축환경공학)
  • Received : 2012.02.03
  • Accepted : 2012.05.16
  • Published : 2012.08.31


This paper presents the shear capacities of biaxial hollow slab with donut type hollow sphere. Recently, various types of slab systems which can reduce self-weight of slabs have been studied for increasing constructions of taller and larger building structures. A biaxial hollow slab system is widely known as one of the effective slab system, which can reduce self-weight of slab. According to previous studies, the hollow slab has low shear strength, compared to solid slab. Also, the shear capacities of biaxial hollow slab are influenced by the shapes and materials of hollow spheres. However, the current code does not provide a clear computation method for the shear strength of hollow slab. To verify the shear capacities of this hollow slab, one-way shear tests were performed. Four test specimens were used for test parameters. One was conventional RC slab and others were hollow slabs. The test parameters included two different shapes and materials of plastic balls. The shape parameters were donut and non-donut forms and the material parameters were general plastic and glass fiber plastic. The results showed that the shear strengths varied depending on hollow shapes and materials used in the slab.


Supported by : 삼성물산(주)


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