CYCLIC STRESS-STRAIN AND STRENGTH PERFORMANCE OF SOFT CLAY. SYMPOSIUM ON RECENT DEVELOPMENTS IN LABORATORY AND FIELD TESTS AND ANALYSIS OF GEOTECHNICAL PROBLEMS. ASIAN INSTITUTE OF TECHNOLOGY, BANGKOK, THAILAND, 6-9 DECEMBER 1983

This paper studies the change in the strength of over-consolidated clay due to cyclic loading. Undrained triaxial compression tests were carried out on a reconstituted marine soft clay, the loading sequences of which are described. A study was made of the variations in the pore water pressure of the clay with the time and number of loading cycles. A hyperbolic stress-strain relation was developed to explain the behaviour of clay under cyclic loading. Change on the modulus of elasticity after cyclic loading was also investigated. The results of a numerical study suggest that normally-consolidated clay loses its undrained strength owing to cyclic loading without drainage while the undrained strength of over-consolidated clay with an over-consolidation rate larger than 4 increases a little after cyclic loading. On the contrary, normally consolidated clay subjected to cyclic loading with drainage drastically increases undrained strength. Over consolidated clay shows a reverse tendency to normally consolidated clay under cyclic loading with drainage. For the covering abstract of the symposium see IRRD 809912. (TRRL)

• Corporate Authors:

  Asian Institute of Technology

  P.O. Box 2754
  Bangkok,   Thailand 
• Authors:
  • YASUHARA, K
  • YAMANOUCHI, T
  • Hirao, K
• Publication Date: 0

Media Info

• Features: References;
• Pagination: p. 206-229
• Serial:
  • Publication of: Asian Institute of Technology
  • Issue Number: 0
  • Publisher: Asian Institute of Technology

Subject/Index Terms

• TRT Terms: Clay; Compression tests; Conferences; Deformation curve; Drainage; Mathematical analysis; Modulus of elasticity; Overconsolidation; Pore water pressures; Repeated loads; Saturated soils; Soft clays; Soil mechanics; Strength of materials; Triaxial shear tests; Undrained strength
• Old TRIS Terms: Soil behavior; Undrained
• ITRD Terms: 4177: Clay; 5905: Compressibility; 8525: Conference; 5791: Consolidation (soil); 5595: Deformation; 2937: Drainage; 6473: Mathematical model; 5919: Modulus of elasticity; 5762: Pore water pressure; 5588: Repetitive loading; 5544: Strength (mater); 5575: Stress (in material); 5782: Undrained soil
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00470210
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Jul 31 1988 12:00AM