TRIAXIAL STATE OF FAILURE IN SAND

This problem of setting up a failure condition and a flow-rule for a granular material in a general state of stress (a state where all 3 main stresses are different) is considered, and a true triaxial apparatus in which a sand sample can be subjected to an arbitrary state of stress and which allows measurement of the strains occurring along the stress-path is described. The apparatus is equipped with 3 spindles, one upper spindle and two side spindles, the former to give the sample a constant rate of strain in the vertical direction, and the latter two to control the strain rates in the horizontal directions, keeping the smaple as a whole horizontally fixed. Further details of apparatus are described and test results are presented and discussed. Conclusions relating to the increasing friction angle, a new failure condition (rupture condition contains 3 parameters which are dpendent on the void ratio), line ruptures, condition of normalcy, and the proportionality factor are presented.

• Corporate Authors:

  Danish Academy of Technical Sciences

  Danish Geotechnical Institute, 1 Maglebjergvej
  Dk-2800 Lyngny,   Denmark 
• Authors:
  • Bonding, N
• Publication Date: 1977

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 51 p.

Subject/Index Terms

• TRT Terms: Failure; Friction; Granular materials; Rupture surfaces; Sand; Strain (Mechanics); Stresses; Triaxial shear tests
• Uncontrolled Terms: Friction angle; Triaxial stress
• Old TRIS Terms: Flow failure; Flow value; Strains
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00170880
• Record Type: Publication
• Report/Paper Numbers: Bulletin No. 30
• Files: TRIS
• Created Date: Mar 29 1978 12:00AM