THE DESIGN OF LARGE DIAMETER CAST-IN-PLACE BORED PILES USING A 'PILOT' PILE AND CONGRUENCE EQUATIONS

The author reports on the results of a test programme carried out since earlier work which was described in March 1980 ground engineering. The expeprimental approach is based on the use as a test instrument, of a small diameter cast-in-place pile, constructed on the site with the same technology and the same material as the large diameter pile to be designed. This small pile, referred to as the 'pilot' pile, which is instrumented along the shaft and at the toe, is subjected to a direct load test up to failure. The data collected from the instrumentation is used for the design of the large diameter pile. The purpose of the present paper is: to restate the problem and to clarify some of the points which were not clearly expressed in the previous paper; to report the results of a later test programme and to indicate the conclusions reached. (TRRL)

• Availability:
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• Corporate Authors:

  Foundation Publications Limited

  7 Ongar Road
  Brentwood CM15 9AU, Essex,   England 
• Authors:
  • Lizzi, F
• Publication Date: 1981-5

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 24
• Serial:
  • GROUND ENGINEERING
  • Volume: 14
  • Issue Number: 4
  • Publisher: EMAP CONSTRUCT LIMITED
  • ISSN: 0017-4653

Subject/Index Terms

• TRT Terms: Bearing capacity; Calculation; Cast in place concrete; Cast in place structures; Design; Design methods; Equations; Friction; Ground settlement; Interfaces; Load tests; Loads; Mathematical models; Size; Soils; Strain gages; Support piles; Tests
• Old TRIS Terms: Bored pile
• ITRD Terms: 3085: Bearing capacity; 6464: Calculation; 4781: Cast in situ concrete; 9011: Design (overall design); 9014: Dimension; 5452: Friction; 5429: Interface; 5567: Load; 6473: Mathematical model; 3399: Pile; 5792: Settlement; 4156: Soil; 5562: Strain gauge; 6255: Test
• Subject Areas: Design; Geotechnology; Highways;

Filing Info

• Accession Number: 00382463
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Apr 30 1984 12:00AM