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Beam-Slab Connection Test of Waffle Shape Precast Prestressed Concrete Slab

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리모델링 연구소 (A Journal of the Seismic Retrofitting & Remodeling Research Center)
단국대학교 리모델링연구소 (Seismic Retrofitting & Remodeling Research Center)
초록

In this paper, a new waffle-shaped(WAS) precast concrete panel was developed through the geometrical modification of the conventional double tee panel. It is a one-way joisted panel with a shallow depth and a boxed shape by wide edge beams. To investigate the structural performance of the connections between W AS panels, loading tests called by WIW were performed at the connections along short edges of two WAS panels. WIW tests were executed according to two different width of shear key(50mm and 80mm) and three types of reinforced topping concrete(wire-mesh alone, wire-mesh plus HD 10, and wire-mesh plus HD13). As a result, the grouting width of shear keys did not act on the ultimate behaviors significantly, and the flexural strength of WIW connections along the long edges of W AS panels was superior to nominal flexural strength. The connections with proper details of steel reinforcement can distribute the positive bending moment at mid-span of W AS panels to the negative moment, which is useful for efficient member design.

저자
  • 허석재(단국대학교 대학원 건축공학과 석사과정) | Heo, Seok Jae
  • 조승호(단국대학교 건축대학 건축공학과 연구전임교수, 공학박사) | Cho, Seung Ho Corresponding author
  • 최경규(단국대학교 건축대학 건축공학과 연구전임교수, 공학박사) | Choi, Kyung-Kyu
  • 정란(단국대학교 건축대학 건축공학과 교수, 공학박사) | Chung, Lan