Design, Monitoring, and Integrity Testing of Drilled Soil Displacement Piles (DSDP) for a Gas-Fired Power Plant

Increasingly, Cast-In-Place (CIP) pile foundations are being used in place of traditional driven pile foundations to support settlement-sensitive structures. The advantages of CIP pile foundations include quick installation, flexibility to adjust pile length for varying subsurface conditions, and reduced noise and vibration. There are inherent uncertainties in all CIP systems and thus detailed testing and production monitoring programs may be appropriate to verify the integrity of each individual CIP pile. This paper presents the design considerations, load testing program, production monitoring, and integrity testing of Drilled Soil Displacement Piles (DSDP) installed for a gas-fired power plant in Bartow, Florida. Efficient planning of the load testing and integrity testing programs resulted in the foundation construction being completed ahead of schedule while verifying the piles met the design requirements. The authors conclude that the integrated process showed that DSDP piles can be used effectively to carry loads through loose and soft soils to underlying bearing stratum. Installations parameters (torque and tool penetration rate) are reliable indicators of subsurface conditions, and, in combination with a good site characterization, can be used as a guide for setting pile toe levels.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: 211-222
  • Monograph Title: GeoSupport 2004. Drilled Shafts, Micropiling, Deep Mixing, Remedial Methods, and Specialty Foundation Systems

Subject/Index Terms

Filing Info

  • Accession Number: 01000166
  • Record Type: Publication
  • ISBN: 0784407134
  • Files: TRIS
  • Created Date: May 4 2005 7:09AM