REINFORCED EARTH WALL AT BOTANY

Reinforced earth is a composite material consisting of a suitable backfill strengthened by the placement of metal strips at regular intervals. Panels are attached to these strips and efficient earth retaining structures may be constructed using this method. Henri Vidal patented this method in 1963. By 1978, 2,000 structures had been completed throughout the world using this concept. Research has been carried out in an attempt to develop effective design procedures using this concept. The initial hypothesis adopted the classical retaining wall theory of Rankine and design was based on a Coulomb failure plane. Further research by Schlosser indicated that this method was overly conservative and he developed a design method based on "coherent gravity structure" hypothesis. However, this method, although resulting in safe structures, does not accurately predict stresses measured in field studies. Ingold, in 1983, proposed a design method related to compaction induced stresses. He compared the results of this theory with those from several case histories and found reasonable correlation. In 1978, the Department of Main Roads, New South Wales, constructed several reinforced earth walls. Four strips were fitted with electric strain gauges and measurements of strain were made periodically. The movements of the wall panels during and after construction were also monitored. The stresses in the strips were found to significantly exceed those predicted by any of the present theories. A possible explanation for this disagreement is the failure of the theories to fully account for the effect of thorough compaction. Also, the stress states within the reinforced earth mass may not be homogeneous due to variations in construction and compaction procedure. The thesis was submitted as part of the requirements for the degree of Master of Engineering Science at the University of New South Wales, 1984. (Author/TRRL)

  • Corporate Authors:

    University of New South Wales

    Gate 9, High Street
    Kensington, New South Wales  Australia  2052
  • Authors:
    • KENNY, P J
  • Publication Date: 1984

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: n.p.

Subject/Index Terms

Filing Info

  • Accession Number: 00392334
  • Record Type: Publication
  • Source Agency: ARRB
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS, ATRI
  • Created Date: Mar 29 1985 12:00AM