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Investigation of Corners and Joints Applied to a Steel-Concrete Composite Caisson

by Soichi Ito, NKK Corp, Kawasaki, Japan,
Hiroshi Nakamura, NKK Corp, Kawasaki, Japan,
Shunrou Uemura, NKK Corp, Kawasaki, Japan,
Tooru Watabiki, NKK Corp, Kawasaki, Japan,



Document Type: Proceeding Paper

Part of: Composite Construction in Steel and Concrete II

Abstract:

We have developed a caisson composed of steel-concrete composite slabs and steel structures, which we call a `Hybrid Caisson.' We studied the structural principles and usability of the structure and concluded that it is often more economical and efficient compared to the conventional RC caissons, given the recent construction conditions in Japan with poor foundation conditions and increased water depths. The steel-concrete composite slab is the major component of the hybrid caisson. It has advantages from the viewpoints of both structural strength and construction work. These advantages attribute a lot to the characteristics and merits of the hybrid caisson. Since the hybrid caisson is a new type of structure, we need to ascertain the strength properties of each part of the structure. Investigations of corners and joints are especially important because these parts experience large member forces and reinforcements are apt to be complicated. We carried out a series of tests for the corners and joints and we tried to find desirable structures that satisfy the requirements of strength and simplicity of fabrication. It was concluded that studs and reinforcement bars may be effectively used for such purposes.

Subject Headings: Steel structures | Caissons | Structural analysis | Concrete structures | Composite structures | Structural strength | Reinforced concrete

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