UNIFIED DESIGN OF PILED FOUNDATIONS WITH EMPHASIS ON SETTLEMENT ANALYSIS. IN: CURRENT PRACTICES AND FUTURE TRENDS IN DEEP FOUNDATIONS

Design of a piled foundation rarely includes a settlement analysis and is usually limited to determining that the factor of safety on pile capacity is equal to an at least value. This approach is uneconomical and, sometimes, unsafe. Every design of a piled foundation should establish the resistance distribution along the pile, determine the location of the force equilibrium (the neutral plane), estimate the magnitude of dragload from accumulated negative skin friction at the neutral plane, evaluate the length of the zone where the shear forces change from negative to positive direction, establish the load-movement relation for the pile toe and the load distribution in the pile at the time that settlement becomes an issue for the design, and finally, perform a settlement analysis. The settlement analysis of a piled foundation must distinguish between settlement due to causes other than the load on the piles. A fundamental realization of the design approach is that pile toe capacity is a misconception. Each of the mentioned points is addressed in this paper, and a design approach for the design of piled foundations and piled rafts is presented. Examples and case histories are included showing the distribution of measured and calculated resistance distribution along the piles and settlement of soil and piles.

• Record URL:
  https://doi.org/10.1061/40743(142)15
• 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:
  • Fellenius, B H
• 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;
• Pagination: p. 253-275
• 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: Foundations; Load factor; Resistance (Mechanics); Safety; Settlement (Structures); Shear properties; Soil stabilization; Structural design; Support piles
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; Safety and Human Factors; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00987893
• Record Type: Publication
• ISBN: 9780784407431
• Files: TRIS
• Created Date: Mar 10 2005 12:00AM