SKIN FRICTION IN MODEL PILE GROUPS

Model pile tests on groups consisting of five, eight and nine piles have shown that under certain circumstances the bearing capacity of a pile group does not equal the sum total of the bearing capacities of single piles and is dependent in turn on: (1) degree of soil compaction; (2) the group spacing; (3) the group configuration and (4) the number of piles in the group. Generally it was observed that in large groups for a shallow depth with a spacing of 4D and under, an increased bearing capacity was exhibited, which was higher than the equivalent bearing capacity of the same number of individual piles. This effect however appears to diminish with depth. For a spacing greater than 4D the piles in the group behaved as individual foundations with no increased bearing capacity. A group with no centre pile exhibited little or no increase in bearing capacity for any case. (Author/TRRL)

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• Corporate Authors:

  INSTITUTION OF HIGHWAYS & TRANSPORTATION

  6 ENDSLEIGH STREET
  LONDON,   United Kingdom  WC1H 0DZ

  INSTITUTION OF HIGHWAYS & TRANSPORTATION

  6 ENDSLEIGH STREET
  LONDON,   United Kingdom  WC1H 0DZ

  INSTITUTION OF HIGHWAYS & TRANSPORTATION

  6 ENDSLEIGH STREET
  LONDON,   United Kingdom  WC1H 0DZ
• Authors:
  • Lake, G C
• Publication Date: 1983-10

Media Info

• Features: Figures; References;
• Pagination: p. 18-22
• Serial:
  • HIGHWAYS & TRANSPORTATION
  • Volume: 30
  • Issue Number: 10
  • Publisher: INSTITUTION OF HIGHWAYS & TRANSPORTATION
  • ISSN: 0265-6868

Subject/Index Terms

• TRT Terms: Bearing capacity; Compaction; Depth; Friction; Pile groups; Piles (Supports); Scale models; Skin resistance; Soil compaction; Spacing; Structural models; Tests
• ITRD Terms: 3085: Bearing capacity; 3686: Compaction; 6499: Depth; 5452: Friction; 6205: Model (not math); 3388: Pile group; 6255: Test
• Subject Areas: Bridges and other structures; Geotechnology; Highways; I51: Earthworks and Soil Drainage;

Filing Info

• Accession Number: 00384532
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: May 30 1984 12:00AM