DIFFERENCE BETWEEN LOAD-TRANSFER RELATIONSHIPS FOR LATERALLY LOADED PILE GROUPS: ACTIVE P-Y OR PASSIVE P-&. TECHNICAL NOTE

Two dimensional finite-element analyses were conducted for undrained soil deformation around piles displaced laterally through soil. The load-transfer p-& curves produced were found to be applicable for design during passive lateral loading but not for active lateral loading of pile groups. The p-& curves characterize the local soil-shear deformation around the pile, whereas p-y curves used in the subgrade-reaction method of active lateral-pile-loading design also include the effects of global soil displacement. Hence, determination of p-y curves from basic soil parameters requires consideration of both local and global soil behavior and pile-group geometry and loading. Significant stiffness disparity exists between the two forms of load-transfer curves for closely spaced pile groups because p-& curves stiffen with reducing pile spacing and active load-transfer curves soften. Careful attention should be given to selecting the appropriate form of reaction curve for design.

Language

  • English

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: p. 1015-18
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00730039
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 1 1997 12:00AM