LIQUEFACTION AND RESIDUAL STRENGTH OF SANDS FROM DRAINED TRIAXIAL TESTS. DISCUSSIONS AND CLOSURE

Two discussions of a paper with the aforementioned title by G. Norris, R. Siddharthan, Z. Zafir, and R. Madhu, published in this journal (Volume 123, Number 3, March 1997) are presented. The first discusser agrees that the described interpolation method, when applied to monotonic triaxial tests, is quite powerful and is applicable to both sands and clays. He points out, however, that one important point that was not clearly stated by the authors is that the proposed interpolation method should also take into account the compressive strains needed to arrive at the starting point of each subsequent drained stress-strain curve. This can be achieved by displacing the origin of each stress-strain curve by the amount of compression strain attained during consolidation. Wong and Alfaro agree that the postpeak softening of loose sand observed in undrained triaxial compression tests is attributed to the increase in pore pressure resulting in a decrease in effective confining stress. They argue, however, that the decrease in effective stress not only reduces the mobilized shear strength, but also reduces the stiffness. In this context, they present results of some special stress path tests to illustrate that the postpeak softening can be dominated by the reduction in stiffness. Discussions are followed by closure from the authors.

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  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Corporate Authors:

  American Society of Civil Engineers

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• Authors:
  • Ladanyi, B
  • Wong, C K
  • Alfaro, M C
• Publication Date: 1998-11

Language

• English

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 1145-48
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 124
  • Issue Number: 11
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Compressive strength; Consolidation; Deformation curve; Drained soil; Effective stress; Interpolation; Liquefaction; Loose soils; Pore pressure; Residual strength; Sand; Saturated soils; Shear strength; Softening point; Soil mechanics; Soils; Stiffness; Triaxial shear tests
• Uncontrolled Terms: Compressive properties; Soil consolidation; Triaxial tests; Undrained soils
• Old TRIS Terms: Shear strength of soils; Soil behavior
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00758533
• Record Type: Publication
• Contract Numbers: BCS-93-00043, UST 541/94E, NSC 85-2211-E-006-063
• Files: TRIS
• Created Date: Jan 11 1999 12:00AM