BEHAVIOUR DURING CONSTRUCTION OF A PROPPED DIAPHRAGM WALL IN STIFF CLAY AT THE A406/A10 JUNCTION

This report gives the results from a field study to monitor the behaviour of a counterforted diaphragm retaining wall founded in overconsolidated clay during the immediately after its construction as part of the A406 North Circular Road, Great Cambridge Road Junction Improvement Scheme in North London. The construction sequence involved excavation under bentonite for each T-shaped diaphragm wall panel using a mechanical grab operating between concrete guide walls. After casting of the reinforced concrete wall panels, temporary props were installed which spanned the underpass. Bulk excavation then took place below the temporary props prior to the casting of a permanent prop slab below the final carriageway level. During installation of the wall and construction of the underpass, measurements were taken of ground movements, total lateral stresses and porewater pressures. The wall itself was instrumented to monitor the development of lateral movements and bending moments during underpass construction.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02665247
• Corporate Authors:

  TRL

  Crowthorne House, Nine Mile Ride
  Wokingham, Berkshire  United Kingdom  RG40 3GA
• Authors:
  • CARDER, D R
  • RYLEY, M D
  • SYMONS, I F
• Publication Date: 1992-4

Media Info

• Features: Figures;
• Pagination: v.p.
• Serial:
  • TRL RESEARCH REPORT
  • Issue Number: 331
  • Publisher: TRL
  • ISSN: 0266-5247

Subject/Index Terms

• TRT Terms: Bentonite; Clay; Concrete construction; Diaphragm walls; Retaining walls; Stability (Mechanics); Walls
• Old TRIS Terms: Wall stability
• Subject Areas: Bridges and other structures; Construction; Highways; Materials; I53: Construction of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00623427
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 31 1992 12:00AM