FLEXIBILITY COEFFICIENTS FOR THE DESIGN OF PILES AND PILE GROUPS

A pile group subjected to vertical and horizontal loads will deflect and rotate. Charts of flexibility coefficients are provided to enable the designer to check whether the deflections and rotations in a given system are acceptable, and to investigate the effect of varying the geometry of the pile group and the material and dimensions of the individual piles. These charts were derived from a parametric study using the Department of Transport's computer program PGROUP. Charts are also presented which summarise the change of stiffness produced by modifying the number of piles in groups of any size. If necessary, the forces and stresses in individual piles may be finally checked using the pgroup program, when a suitable pile design has been derived with the aid of the charts. The design process is illustrated by worked examples. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/086017171X
• Corporate Authors:

  Construction Industry Research & Information Assoc

  6 Storey's Gate
  London SW1P 3AU,   England 
• Authors:
  • BUTTERFIELD, R
  • DOUGLAS, R A
• Publication Date: 1981

Media Info

• Features: Figures; References;
• Pagination: 79 p.
• Serial:
  • Publication of: Construction Industry Research & Information Assoc
  • Publisher: Construction Industry Research & Information Assoc
  • ISSN: 0305-408X

Subject/Index Terms

• TRT Terms: Charts; Coefficients; Computer aided design; Computer programs; Deflection; Depth; Design; Flexibility; Force; Loads; Location; Mathematical models; Modulus of elasticity; Pile groups; Rotation; Shape; Shear strength; Size; Soils; Stiffness; Stresses; Support piles
• Uncontrolled Terms: Geometry (Shape)
• ITRD Terms: 6486: Chart; 5586: Deflection; 6499: Depth; 9011: Design (overall design); 9014: Dimension; 5567: Load; 9061: Location; 6473: Mathematical model; 5919: Modulus of elasticity; 3399: Pile; 3388: Pile group; 6406: Rotation; 9073: Shape; 5531: Shear; 8645: Software; 4156: Soil; 5931: Stiffness
• Subject Areas: Design; Geotechnology; Highways;

Filing Info

• Accession Number: 00349125
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 086017-171-X
• Report/Paper Numbers: No. 108 Monograph
• Files: ITRD, TRIS
• Created Date: May 28 1982 12:00AM