UNDERPASS THRUST AT BRENT CROSS FLYOVER

The thrusting of precast concrete tunnel boxes beneath the three-level flyover approaches at brent cross is reported and claimed to be the largest thrust in the UK to date. The need for thrust boring was found to be essential, in order to meet the condition that access to the shopping centre should not interfere with the heavy traffic flow at the existing interchange. Details of the excavations required, materials used and methods employed in construction are given, together with diagrams and photographs, and the overcoming of the problem of pockets of soft material located in the line of thrust is described. The work was coordinated by Cementation Projects Ltd., and the other companies that were involved are listed. /TRRL/

• Corporate Authors:

  IPC Building and Contract Journals Limited

  Surrey House, 1 Throwley Way
  Sutton, Surrey SM1 4QQ,   England 
• Publication Date: 1975-1

Language

• English

Media Info

• Features: Figures; Photos;
• Pagination: p. 10-12
• Serial:
  • Highways and Road Construction
  • Volume: 43
  • Issue Number: 1781

Subject/Index Terms

• TRT Terms: Compressibility; Concrete; Construction management; Drilling; Excavations; Interchanges; Precast concrete; Shielding (Tunneling); Soils; Thrust; Tunneling; Tunnels; Underpasses
• Geographic Terms: United Kingdom
• ITRD Terms: 5905: Compressibility; 4755: Concrete; 3666: Construction method; 3871: Drilling; 433: Interchange; 4792: Precast concrete; 3394: Shield driving; 4156: Soil; 3374: Tunnel; 8119: United Kingdom
• Subject Areas: Bridges and other structures; Construction; Design; Geotechnology; Highways; I25: Design of Tunnels; I54: Construction of Tunnels;

Filing Info

• Accession Number: 00097336
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1975 12:00AM