DYNAMIC STUDIES ON THE BEARING CAPACITY OF PILES

A reliable means of determining pile capacity from dynamic measurements is described. The method (results show excellent agreement when compared with static measurements) which depends upon the ability to make reliable accurate measurements of force and acceleration at the pile top, is described by a capacity equation: R=(f(t*) + F(t*+2L/C) /2 + Mc /2L (V(t*) -V(t*+2Lc). This procedure has been applied to 60 piles which were also statically load tested. Depending upon the pile-soil combination, dynamic forces, commonly called damping related to the relative pile velocity can occur. For most pile types, the majority of both the static soil resistance and dynamic forces have their origin at the pile tip rather than in frictional side resistance. The computational procedure is illustrated on a sample measurement record. Aspects of pipe piles, timber piles, the time-delay approach, and the static test are discussed.

• Supplemental Notes:
  • Proceedings of the twenty-ninth annual Ohio Transportation Engineering Conference, conducted by the Department of Civil Engineering, in cooperation with the Ohio Department of Transportation.
• Corporate Authors:

  Ohio State University, Columbus

  Department of Civil Engineering
  Hitchcock Hall 470
  Columbus, OH  United States  43210
• Authors:
  • Goble, G G
• Publication Date: 1975-4

Media Info

• Features: Figures;
• Pagination: p. 110-125
• Serial:
  • OHIO TRANSPORTATION ENGINEERING CONFERENCE
  • Volume: 29

Subject/Index Terms

• TRT Terms: Bearing capacity; Calculation; Damping (Physics); Dynamic tests; Equations; Force; Mechanical acceleration; Pipe; Skin resistance; Soils; Static tests; Support piles; Timber
• Uncontrolled Terms: Computation; Pipe piles
• Old TRIS Terms: Resistance; Timber piles
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00127888
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 21 1976 12:00AM