DYNAMIC DETERMINATION OF PILE CAPACITY. IN: CURRENT PRACTICES AND FUTURE TRENDS IN DEEP FOUNDATIONS

A method is presented for determining the axial static pile capacity from dynamic measurements of force and acceleration made under the impact of a large hammer. The basic equation for calculation of the forces resisting pile penetration is derived. The limitations of the basic resistance equation are discussed and illustrative examples of field measurements are given. With the availability of this derivation, it is possible to prove that the Case Pile Wave Analysis Program (CAPWAP) resistance force distribution is unique. Using the assumption that the resistance penetration can be divided into static and dynamic parts, an expression is developed for calculating the dynamic resistance to penetration. The resulting method requires the selection of a "damping" constant which is shown empirically, to relate to soil size distribution. A correlation of Case Method capacity and the capacity observed in static load tests is given for 69 statically tested piles that were also tested dynamically.

• Record URL:
  https://doi.org/10.1061/40743(142)23
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0784407436
• Corporate Authors:

  American Society of Civil Engineers

  Geo-Institute
  Reston, VA  United States  20191-4400
• Authors:
  • Rausche, F
  • Goble, G G
  • Likins, G E
• Conference:
  • Contributions in Honor of George G. Gobel
  • Location: Los Angeles California, United States
  • Date: 2004-7-27 to 2004-7-31
• Publication Date: 2004-7

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 398-417
• Monograph Title: CURRENT PRACTICES AND FUTURE TRENDS IN DEEP FOUNDATIONS
• Serial:
  • ASCE Geotechnical Special Publication
  • Issue Number: 125
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Dynamic loads; Force; Foundations; Penetration resistance; Pile driving; Pile foundations; Pile hammers; Resistance (Mechanics); Support piles
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00987901
• Record Type: Publication
• ISBN: 9780784407431
• Files: TRIS
• Created Date: Mar 10 2005 12:00AM