The lengthy high-stress consolidation test research on silty clay in Xi'an

DOI

10.2991/iceep-17.2017.229How to use a DOI?

Keywords

silty clay;lengthy high-stress consolidation test; rheological deformation; subsidence calculation

Abstract

The long-term high-pressure consolidation test, of which the maximum consolidation pressure is 6 MPa and the longest consolidation duration is 34 months, is selected to simulate the deformation characteristics of the main compression soil layer (depth of 100 ~ 300 m) based on the study of the deep foundation pit silty clay located in Xiaozhai subway station in Xi'an City. The test results shows that Terzaghi's one-dimensional consolidation theory of soil is no longer applicable to the soil consolidation calculation and prediction as the consolidation stress exceed 4.8MPa; under the pressure of 6 MPa, the rheological deformation accounts for about 90% of the total deformation, and the deformation shows no signs of stopping after compression for 953 days; when the stress is reduced or removed, most of the compression deformation of soil is not recoverable.

Copyright

© 2017, 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  - Gangchen Sun
AU  - Jianbing Peng
PY  - 2017/06
DA  - 2017/06
TI  - The lengthy high-stress consolidation test research on silty clay in Xi'an
BT  - Proceedings of the 2017 6th International Conference on Energy and Environmental Protection (ICEEP 2017)
PB  - Atlantis Press
SP  - 1301
EP  - 1304
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceep-17.2017.229
DO  - 10.2991/iceep-17.2017.229
ID  - Sun2017/06
ER  -