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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Shell Structures

Development of floor system using RC curved and folded surfaces

< Table of Contents for Shell Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Shell Structures
  • Pages: 7
  • Title: Development of floor system using RC curved and folded surfaces
  • Author(s): Atsushi Mutoh, Akihiro Masuda, Takaaki Itoh
  • Keywords: reinforced-concrete shell, floor slab, curved surface, folded surface, pre-cast concrete
Abstract
In this paper, high-efficiency slab system employing reinforced concrete curved or folded surface is proposed for floor slabs. In this study, an examination result to enable a high load carrying capacity at light weight is shown by applying several curved and folded surfaces to a floor slab. In particular, a floor-slab system using a novel double slab with a fused shell structure and pre-cast technology is proposed. The structural performance of the proposed floor-slab system is examined by a numerical simulation with the conventional flat slab and a void slab. In general, a large-span slab requires the installation of joists, as well as increased formwork and work to arrange reinforcing bars on the construction site. A lack of skilled workers and high cost are potential shortcomings for the use of large-span slabs. The proposed concept ensures the strength and rigidity in the mechanical rationality of the shell and reduces the complexity of construction by a pre-cast in factory production. In addition, it is possible to eliminate the need for a ceiling and provide a space design utilizing a curved surface corresponding to indirect lighting.

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