Double Skin Composite Construction for Submerged Tube Tunnels

by Rangachari Narayanan, Steel Construction Inst, Ascot, United Kingdom,
Terance Martin Roberts, Steel Construction Inst, Ascot, United Kingdom,

Document Type: Proceeding Paper

Part of: Composite Construction in Steel and Concrete II


A new form of sandwich construction consisting of two relatively thin steel plates, with a concrete infill has been developed for use in the construction of submerged tube tunnels. The paper describes the advantages of the system and summarizes the investigations carried out so far to assess the axial, flexural and combined resistance of the structural elements which make up the tunnel. A simple analytical model for the strength assessment of a complete tunnel cross-section test specimen, is outlined.

Subject Headings: Composite construction | Steel structures | Submerging | Tubes (structure) | Tunnels | Underwater structures | Structural analysis | Steel construction

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