Study of undisturbed loess stress-strain experiments based on CT

DOI

10.2991/icadme-15.2015.377How to use a DOI?

Keywords

undisturbed loess; damage; stress-strain

Abstract

Test method for observation of geotechnical material in structural damage has become one of the hot field of mechanics, which is the basis to establish the structural model. The authors use real time CT test of triaxial stress in undisturbed loess during triaxial shear tests - strain were studied. The paper analyzes the Q2 and Q3 loess stress - strain curves, proposed initial damage stress undisturbed loess method of determining the threshold of strain. Based on the test results, it indicates Q2 compared Q3 depressed loess prone to injury at low confining, and its strain injury threshold lower than the Q3 loess. On this basis, the damage variable formula proposed by the number of CT defined fitting draw damage variable axial strain and deviatoric stress relationship. CT triaxial test instrument can reveal undisturbed loess structural damage evolution and deformation and destruction law. The instrument is a powerful tool for in-depth analysis of the mechanical properties of the soil.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhaoyang Wang
PY  - 2015/10
DA  - 2015/10
TI  - Study of undisturbed loess stress-strain experiments based on CT
BT  - Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering
PB  - Atlantis Press
SP  - 2031
EP  - 2038
SN  - 2352-5401
UR  - https://doi.org/10.2991/icadme-15.2015.377
DO  - 10.2991/icadme-15.2015.377
ID  - Wang2015/10
ER  -