A novel steel-concrete-steel sandwich design for immersed tube tunnel construction is described, which it is claimed could offer cost savings of some 10 per cent compared with reinforced concrete or all- steel methods. The system, which involves no formwork or bar reinforcement, uses fabricated steel inner and outer shells, generally of 8mm to 10mm steel plate acting as formers. The outer skin automatically provides a watertight covering whereas a steel skin which does not contribute to the load bearing capacity is required for conventional concrete immersed tube construction. Also, the overall weight of elements is lighter. A series of steel stud connectors pre- welded to the plate sides and encapsulated in the concrete assure structural integrity. It is envisaged that the system would be suitable for structures such as immersed tube tunnels, caissons, storage vessels (gas and liquid), retaining walls and offshore structures.

  • Availability:
  • Corporate Authors:

    Morgan-Grampian Limited

    30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Page, M
  • Publication Date: 1995-9


  • English

Media Info

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Filing Info

  • Accession Number: 00715943
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jan 31 1996 12:00AM