NUMERICAL DESIGN-ANALYSIS FOR PILES IN SANDS

A few points are made with regard to the numerical analysis of piles. It is difficult to depend upon laboratory stress- strain curves for stiff clays for determination of initial mouduls and the ultimate strength. Also, the load- deformation behavior is highly dependent on the magnitudes of adhesion at interface, cohesive strength, factor alpha, and spatial distribution of E. It is noted that for driven piles driving stresses can influence the distribution significantly, and for homogeneous soils, the numerical procedure seems to be incapable of predicting the double curvature in the distribution of load in pile observed in many field conditions. In stiff clay, the phenomenon of softening in the soil and at the interface needs to be considered if realistic computations for behavior at greater loads are desired. It is possible to include softening in finite element analysis, and these results can allow better correlation with observations than those without incorporation of softening. Analyses have shown that the effect of installation for driven piles is restricted approximately within a zone of four times the diameter of the pile.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Desai, C S
• Publication Date: 1976-2

Media Info

• Features: Figures; References;
• Pagination: p. 177-179
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 102
  • Issue Number: GT2
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Adhesion; Clay; Cohesive strength; Deformation; Deformation curve; Finite element method; Interfaces; Laboratory studies; Loads; Modulus; Numerical analysis; Pile driving; Sand; Structural design; Support piles; Ultimate strength
• Old TRIS Terms: Cohesive values; Pile design
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00134050
• Record Type: Publication
• Report/Paper Numbers: ASCE #11893
• Files: TRIS
• Created Date: Jun 23 1976 12:00AM