FIELD PERFORMANCE OF DRIVEN ENLARGED-TIP PILES

Recent experience is presented on the performance of piles with a precast enlarged tip in a variety of soil profiles in the New York City area. The design, construction, and use of one version of enlarged-tip pile are described, along with the conditions under which it may be used to advantage. Although more costly than conventional piles, enlarged-tip piles are used economically where they are significantly shorter than conventional piles or of higher capacity, thus allowing pile substitutions of one for two or one for three. Wave equation analysis of pile driving has made it possible to predict very closely the appropriate hammer size, cushioning material, and driving resistance necessary to produce specific pile capacities with various combinations of pile tips and stems. Soil bearing capacity theory helps to explain why field performance of enlarged-tip piles is markedly superior to that of conventional piles, especially in loose granular soils. Case histories illustrate the range of conditions under which these piles have proved effective.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1974/517/517-006.pdf
• Summary URL:
  • http://scholar.google.com/scholar_lookup?title=FIELD+PERFORMANCE+OF+DRIVEN+ENLARGED-TIP+PILES&author=S.+Merjan&publication_year=1974
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Merjan, S
• Conference:
  • 53rd Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1974-1-21 to 1974-1-25
• Publication Date: 1974

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: p. 70-76
• Monograph Title: PERFORMANCE OF EARTH RETAINING STRUCTURES AND PILE FOUNDATIONS
• Serial:
  • Transportation Research Record
  • Issue Number: 517
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Case studies; Costs; Forecasting; Granular soils; Performance; Permeability; Pile driving; Size; Structural design; Support piles; Wave equations
• Uncontrolled Terms: Field performance
• Old TRIS Terms: Pile bearing capacities; Pile design; Pile points; Wave equation formula
• Subject Areas: Finance; Geotechnology; Highways;

Filing Info

• Accession Number: 00084128
• Record Type: Publication
• ISBN: 0309023610
• Files: TRIS, TRB
• Created Date: Apr 22 1975 12:00AM