EXPERIMENTAL EVALUATION OF PULLOUT ANALYSES FOR PLANAR REINFORCEMENTS

This technical paper presents the results of laboratory pullout tests with planar soil reinforcements that are used to assess the proposed shear-lag analyses described in a previous paper. Measurements of tensile stress distributions were obtained for thin steel and nylon 6/6 sheet inclusions embedded in dense Ticino sand. The steel reinforcement is relatively inextensible, with linear stress distribution and load-elongation behavior. The interface friction is well defined from repeatable measurements of the peak pullout resistance. The response of the extensible nylon 6.6 reinforcements, however, is highly nonlinear with a pronounced postpeak reduction in pullout resistance. The interface friction can be determined reliably from the residual pullout resistance, although these data are affected by stick-slip behavior in tests performed at low displacement rates. Good agreement was observed between the measured data and the shear-lag predictions of nonlinear load distribution throughout the test, which clearly demonstrates the postpeak "snap-through" mechanism described by the analysis. To evaluate other aspects of the analyses, such as stress concentrations at the sliding front, further experimental measurements are required.

• Availability:
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• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Abramento, M
  • Whittle, A J
• Publication Date: 1995-6

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 486-492
• Serial:
  • Journal of Geotechnical Engineering
  • Volume: 121
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9410

Subject/Index Terms

• TRT Terms: Analysis; Friction; Interfaces; Laboratory tests; Length; Loads; Material reinforcement; Physical distribution; Pull out test; Soils; Tension
• Uncontrolled Terms: Elongation; Tensile stress
• Subject Areas: Freight Transportation; Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00680591
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 14 1995 12:00AM