Vertical Drains under a High Embankment on a Very Soft Till Oxford Brook, Miramichi, New Brunswick

The purpose of this paper is to describe the soil settlement problems encountered by the proposal of a 3 meter high approach embankment leading to a single span overpass structure founded on spread footings by the New Brunswick Department of Transportation as well as steps taken to overcome these challenges. The original site was on top of a great deal of compressible soil that would require upwards of 20 years of compression. This magnitude of settlement over a 20-year period was considered unacceptable by the NBDOT. Therefore, vertical drains were used to expedite the rate of settlement. The drains were installed in a triangular pattern with spacing of 1.5, 3.0 and 5.0 meters. The spacing was smallest in the area of the proposed bridge abutments and was increased away from the abutments. Four settlement plates and three piezometers were installed to monitor the settlement and pore water pressure during and after construction of the embankment. Settlement measurements showed primary consolidation ended in less than a year, agreeing well with predicted values.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9781551872250
• Corporate Authors:

  Transportation Association of Canada (TAC)

  401-1111 Prince of Wales Drive
  Ottawa, Ontario  Canada 
• Authors:
  • Bourque, Serge
  • Landva, Arvid
  • MacDonald, Joe
  • McManus, Shawn
• Conference:
  • Annual Conference & Exhibition of the Transportation Association of Canada, 2006. Congres et exposition annuels de l'Association des transport du Canada, 2006.
  • Location: Charlottetown, Prince Edward Island , Canada
  • Date: 2006-9-17 to 2006-9-20
• Publication Date: 2006

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References; Tables;
• Pagination: 14p
• Monograph Title: Transportation without Boundaries

Subject/Index Terms

• TRT Terms: Embankments; Ground settlement; Monitoring; Soft soils; Soil consolidation test; Soil stabilization; Soil tests; Soils; Till; Vertical drains
• Uncontrolled Terms: Settlement (Embankments)
• Geographic Terms: New Brunswick
• Subject Areas: Design; Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 01038572
• Record Type: Publication
• ISBN: 9781551872250
• Files: TRIS
• Created Date: Dec 29 2006 11:07AM