SENSITIVITY AND ACCURACY OF THE PILE WAVE EQUATION

The dynamic wave equation provides a means of evaluating pile capacity that is mathematically well founded and probably provides the most realistic mathematical model available for depicting the hammer-pile-soil system. Numerical integration of this equation, with the aid of a digitial computer appears to be the most rational means of evaluating pile capacity, and has been accomplished with excellent correlations between predicted and measured loads. A computer program solution of the wave equation utilized in the investigation reported here, is discussed, as well as sensitivity and evaluation of wave equation pile-soil interaction parameters. For the failure test results of this investigation, wave equation analyses consistently gave better pile capacity prediction results than did the dynamic impact equations. Also, the accuracy of wave equation predicted capacity was very good in all but a few cases. The abbreviated sensitivity study conducted in this work indicated a greatly dampended effect of uncertainity of pile-soil interaction parameter values on wave equation pile capacities. A tabulation of values of the pile-soil interaction parameters is presented and it is recommended that this format be utilized in the wave equation program.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00174653
• Corporate Authors:

  Foundation Publications Limited

  7 Ongar Road
  Brentwood CM15 9AU, Essex,   England 
• Authors:
  • Ramey, G E
  • Hudgins, A P
• Publication Date: 1977-10

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 45-47
• Serial:
  • GROUND ENGINEERING
  • Volume: 10
  • Issue Number: 7
  • Publisher: EMAP CONSTRUCT LIMITED
  • ISSN: 0017-4653

Subject/Index Terms

• TRT Terms: Computer programs; Digital computers; Failure; Hammers; Mathematical models; Sensitivity; Soil structure interaction; Wave equations
• Old TRIS Terms: Pile bearing capacities; Wave equation formula
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00172342
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 29 1978 12:00AM