BEARING CAPACITY OF PILES FROM DYNAMIC MEASUREMENTS

A series of research projects have produced a reliable and accurate means of predicting static pile capacity from dynamic measurements. Instrumentation for measuring both force and acceleration at the pile top has been developed and tested. The signal is recorded on analog magnetic tape using a portable tape recorder. The necessary processing system, both hardware and software, has been assembled so that the recorded data can be analyzed completely automatically. The data is first converted to digital form and then a variety of computations are performed and the results plotted. A procedure, using the dynamic measurements, known as the Case Method has been studied which gives capacity predictions in excellent agreement with statically measured values. This method can be applied in the field using a special purpose computer. The concept was fully tested by the project. Methods were also developed for determination of resistance distribution along the pile using measurements made at the top. Extensive correlation between static measurements and dynamic predictions are presented for measurements made in Ohio and also in other states. In all, 74 piles were tested.

  • Supplemental Notes:
    • Research sponsored by the Ohio Department of Transportation and conducted in cooperation with the U. S. Department of Transportation, Federal Highway Administration.
  • Corporate Authors:

    Case Western Reserve University

    Department of Solid Mechanics, Structure & Mechanical Design
    Cleveland, OH  USA  44106
  • Authors:
    • Goble, G G
    • Likins Jr, G
    • Rausche, F
  • Publication Date: 1975-3

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 76 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00128599
  • Record Type: Publication
  • Report/Paper Numbers: OHIO-DOT-05-75 Final Rpt.
  • Contract Numbers: 14247(0)
  • Files: TRIS
  • Created Date: Apr 21 1976 12:00AM