Experimental Study of Triaxial Creep Characteristics of Q2 Loess in Yan’an

DOI

10.2991/iwmecs-15.2015.6How to use a DOI?

Keywords

Q2 loess; creep test; creep characteristics; creep constitutive model.

Abstract

Triaxial creep test, was conducted on Yan'an Q2 loess under different moisture contents and confining stresses. The creep strain-time curves were obtained. Based on the test results, the stress levels, confining pressures, and moisture contents were all found to have great impact on the creep properties of Yan'an Q2 loess, and when the stress level is higher than the yield stress of Q2 loess, samples show significant creep properties. According to the creep test results and models , a three-dimensional viscous creep model of elasto-plastic stress state was developed based on the use of analogy. On this basis, the transient creep damage constitutive model of loess and the quasi-Newton method were established, where the model parameters were fitted by the theoretical values based on the comparison with the experimental curve, indicted great model applicability.

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  - Zhao Duan
AU  - Jian-bing Peng
PY  - 2015/10
DA  - 2015/10
TI  - Experimental Study of Triaxial Creep Characteristics of Q2 Loess in Yan’an
BT  - Proceedings of the 2015 2nd International Workshop on Materials Engineering and Computer Sciences
PB  - Atlantis Press
SP  - 27
EP  - 31
SN  - 2352-538X
UR  - https://doi.org/10.2991/iwmecs-15.2015.6
DO  - 10.2991/iwmecs-15.2015.6
ID  - Duan2015/10
ER  -