UPLIFT TESTING OF MODEL DRILLED SHAFTS IN SAND-DISCUSSION AND CLOSURE

It is suggested that the author's difficulties in rationalizing the lateral-pressure coefficients in the "dense sand" tests stems largely from a failure to take into account the increased lateral pressure caused by placing and rodding the concrete during construction of the test piles. However, the author contends that, since curing of the concrete begins almost immediately, there would be no permanent increase in the soil stress. In response to a discussion of other plate-anchor tests, test sample preparation, and the relative merits of plate anchors versus drilled shafts, the authors, state that the sampling method used was selected because it allowed uniform placement and made soil displacement and stress measurements easier. They feel that anchors would be more efficient when the loading is strictly axial uplift, while drilled shafts are more desirable when foundations are subjected to axial uplift, axial compression shear and moment, as is the case with transmission-line towers. The author also noted that comparisons of the coefficient of earth from various test results are not directly valid because several different foundation types and construction methods were involved.

• 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:
  • Kulhawy, F H
  • Withiam, J L
• Discussers:
  • Long, L O
  • Dayal, U
  • Harvey, R C
  • Andreadis, A
  • Tsangarides, S N
• Publication Date: 1980-5

Media Info

• Features: Figures; References;
• Pagination: p. 574-580
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 106
  • Issue Number: GT5
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Anchor plates; Concrete curing; Foundations; Friction piles; Samples; Stresses; Uplift pressure
• Uncontrolled Terms: Drilled shafts; Preparation; Sand boils
• Old TRIS Terms: Foundations (Structures)
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00314624
• Record Type: Publication
• Report/Paper Numbers: ASCE 14301
• Files: TRIS
• Created Date: Oct 8 1980 12:00AM