IMMERSED-TUBE TUNNELS

The second part of an article on Immersed-Tube Tunnels continues a discussion on the design and construction of a circular steel-shell highway tunnel in which the shell is 10 M diameter and 8 cm thick with stiffening diaphragms. In addition to an internal concrete lining 450 mm thick the design also has external concrete comprising cap, keel and ballast concrete each side. Such tunnel units are usually some 90 M long and, after the addition of roadway slab and termil concrete, would have a freeboard of 300-600 M and a gross weight of some 9000 tonnes when launched. Criticisms of steel-shell construction lay in doubts concerning the integrity of the construction against water seepage and the difficulty in providing for flexing and movement within the structure. The author discusses the design features and advantages of constructing underwater tunnels by the concrete box method for the construction of rectangular section, multi-lane tunnels. See also IRRD Abstract No. 218311. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0041414X
• Corporate Authors:

  Morgan-Grampian Limited

  30 Calderwood Street
  London SE18 6QH,   England 
• Authors:
  • CULVERWELL, D R
• Publication Date: 1976-3-4

Media Info

• Features: Figures; Photos;
• Pagination: p. 91-98
• Serial:
  • Tunnels & Tunnelling International
  • Volume: 8
  • Issue Number: 3
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Composite materials; Concrete; Construction management; Design; Reinforced concrete; Seepage; Shells (Structural forms); Steel; Structural design; Tunnel lining; Tunneling; Tunnels; Underwater construction; Underwater structures
• Uncontrolled Terms: Immersion; Tunnel design
• Old TRIS Terms: Steel shell; Submarine tunneling
• ITRD Terms: 9005: Composite; 4755: Concrete; 3666: Construction method; 9011: Design (overall design); 4794: Reinforced concrete; 4542: Steel; 3374: Tunnel; 3626: Underwater
• Subject Areas: Bridges and other structures; Construction; Design; Highways; Hydraulics and Hydrology; I25: Design of Tunnels; I54: Construction of Tunnels;

Filing Info

• Accession Number: 00138965
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Nov 17 1976 12:00AM