Yielding characteristics of sand under triaxial compression and extension stresses

Yielding characteristics of sand under triaxial compression and extension stresses

Creators Miura Norihiko

Creators Yasufuku Noriyuki

Creators Yamamoto Takashi

Yield curves of sand in a particle-crushing region were determined by the multi-step stress path method with a high pressure triaxial apparatus. The yield curves depicted on the p-q diagram were found to have such characteristics as dq/dp=G(η), irrespective of stress path, where q is deviator stress, p is mean principal stress, and η is stress ratio. Integrating the dq/dp～η curve numerically, the η-U_p(η) relationship was obtained, by which a family of yield curves was constructed. It was shown that the yield curves of a family are similar with respect to the origin of the p-q diagram and hence they can be normalized so as to form a single curve by using a newly defined stress parameter p_e.

[ISSN]0386-3433

[NCID]AA0086073X