A LABORATORY STUDY OF TIEBACKS IN COHESIVE SOIL

The short-term and long-term behaviour of tiebacks anchored incohesive soils are not well understood, particularly regarding basic component responses of the overall tieback system. There are shortcommings in the predictive capacity for short-term and long-term performances both in individual tiebacks and complete systems. Nevertheless, the methods currently being used to calculate the ultimate resistance to pull-out of individual or groups of tiebacks appear to be conservative. A physical model laboratory test facility has been designed to investigate the short-term and long-term behaviour of small-scale straight-shafted tiebacks anchored in cohesive soils to provide the following: pore-water measurements, tieback lock-off, measurement of total and residual tieback movement, measurement, of load distribution along the tieback, and unearthing of the tieback. The laboratory tieback behaviour has been studied using both consolidated and compacted clay, to indicate the effects of stress history, loading test technique, and overburden pressure on tieback performance.

• Corporate Authors:

  National Research Council of Canada

  1200 Montreal Road
  Ottawa, Ontario  Canada  K1A 0R6
• Authors:
  • Boonsinsuk, P
  • Ludwig, H
  • Young, R N
• Publication Date: 1987-2

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 11-22
• Serial:
  • CANADIAN GEOTECHNICAL JOURNAL
  • Volume: 24
  • Issue Number: 1
  • Publisher: National Research Council of Canada

Subject/Index Terms

• TRT Terms: Cohesive soils; Laboratory tests; Load transfer; Pore water; Pull out test; Tiebacks
• Subject Areas: Bridges and other structures; Geotechnology; Highways; I20: Design and Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00472660
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 31 1987 12:00AM