A THEORETICAL EXAMINATION OF ERRORS IN MEASURED SETTLEMENTS OF TEST PILES

A theoretical examination is made of the errors involved in settlement measurements on a test pile, using various loading and measurement systems. Correction factors are derived which may be applied to the measured settlement in order to obtain a better estimate of the true settlement of the test pile. It is found that the errors involved in using ground anchors are generally considerably less than those associated with the use of a reference beam for measuring settlement or in jacking the test pile against adjacent anchor piles. If the latter type of loading system is used, the errors in the measured settlement may be reduced by measuring the settlement with reforence to the anchor piles rather than a distant reference point. On the basis of the theoretical solutions, recommendations are made regarding the minimum desirable spacing between the test pile and reference beam supports, the test pile and adjacent anchor piles or the test piles and the supporting ground anchors.

  • Corporate Authors:

    University of Sydney

    School of Civil Engineering, Parramatta Road
    Sydney, New South Wales  Australia  2006
  • Authors:
    • POULOS, H G
    • Mattes, N S
  • Publication Date: 1974-12

Media Info

  • Features: Figures; References;
  • Pagination: 21 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00132640
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Res. Rpt. No. R257
  • Files: ITRD, TRIS
  • Created Date: Nov 9 1977 12:00AM