EXTENDING THE LIFE OF A VICTORIAN TUNNEL

This article outlines presentations and discussion on 19 October 1995 at the Institution of Civil Engineers (ICE), London, on the repairs conducted on the 100-year-old Newton Street Tunnel near Glasgow, Scotland. The 1.9km long twin track brick-lined railway tunnel was built between 1886 and 1889, and the section requiring repair was near the west portal in an area of flawed rock. Previous repairs had consisted of grouting and unsuccessful attempts to rebuild part of the lining. An emergency repair was made in 1990. An alternative approach was sought, that would allow a return to double-track running. The design approach was to: (1) understand the failure mechanism; (2) develop an outline solution; (3) identify parameters for the lining rock structure; and (4) develop a mathematical model for detailed analysis. The arch was found to be spreading under load, and failure was occurring by formation of hinges in its crown. Finite element modelling was used to assess the tunnel's long-term behaviour. Key repair elements included: (1) construction of a reinforced concrete invert slab to prevent lining movement; (2) grouting; (3) stitch ties; and (4) a shotcrete layer. Finally, the construction operations are described.

• 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:
  • LaMont, D
• Publication Date: 1995-12

Language

• English

Media Info

• Pagination: p. 46-8
• Serial:
  • Tunnels & Tunnelling International
  • Volume: 27
  • Issue Number: 12
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Anchorages; Arches; Brick; Failure; Loads; Mathematical analysis; Mathematical models; Reinforced concrete; Repairing; Rocks; Shotcrete; Tunnel lining; Tunnels
• Uncontrolled Terms: Injection (Materials)
• Geographic Terms: United Kingdom
• ITRD Terms: 6471: Analysis (math); 3420: Anchorage; 3373: Arch (structural); 4516: Brick; 5520: Failure; 3617: Injection (mater); 5567: Load; 6473: Mathematical model; 4794: Reinforced concrete; 3635: Repair; 4154: Rock; 4730: Shotcrete; 3374: Tunnel; 3385: Tunnel lining; 8119: United Kingdom
• Subject Areas: Bridges and other structures; Geotechnology; Maintenance and Preservation;

Filing Info

• Accession Number: 00720814
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: May 24 1996 12:00AM