LARGE-SCALE MODEL TEST OF DRILLED PIER IN SAND

A technique is presented for assessing the magnitude of skin friction for pier foundations in sand. The technique employs the results of interface direct shear tests between sand and the construction material; the results are presented in hyperbolic equation form. The test pier was 16 in. (407 mm) in diameter and 15 ft (4.6 m) long. The test pier was heavily instrumented with Carlson stress meters, electrical resistance strain gages, and calibrated hydraulic rams on the top and bottom of the pier. Comparisons of predicted and measured values of skin friction showed agreement within 5%. Bonded resistance strain gages on the vertical steel reinforcement are the most reliable instrumentation method. The magnitude of skin friction for "point bearing" piers in sand in prototype installations may approach 20% - 30% of the total load capacity. /ASCE/

• 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:
  • Clemence, S P
  • Brumund, W F
• Publication Date: 1975-6

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 537-550
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 101
  • Issue Number: GT6
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Alternatives analysis; Bearing capacity; Building materials; Direct shear tests; Drilling; Foundations; Hyperbolic functions; Instrumentation; Material reinforcement; Piers (Supports); Piers (Wharves); Sand; Scale models; Skin resistance; Strain gages; Strain measurement
• Uncontrolled Terms: Comparative analysis; Model tests
• Old TRIS Terms: Stress meters
• Subject Areas: Bridges and other structures; Geotechnology; Highways;

Filing Info

• Accession Number: 00098641
• Record Type: Publication
• Report/Paper Numbers: ASCE #11369 Proceeding
• Files: TRIS
• Created Date: Sep 10 1975 12:00AM