RESEARCH ARTICLE


Test Analysis on the Dynamic Performance of Frozen Silty Clay



Zheng Bin1, Xu Yang2, Zheng Shanshan1, Qu Shuying*, 1
2 School of Civil Engineering, Yan Tai University, Yan Tai, China
2 City Building Industry Management Office, Fu Shan District, Yan Tai, China


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Creative Commons License
© 2015 Bin et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Abstract

Currently, over half of China’s trunk railways are located in permafrost regions. But to tackle the railway subgrade disease has always been the difficulty in the railway construction there. The influence that the dynamics performance of frozen silty clay has on permafrost subgrade is an important component in the researches towards permafrost subgrade. In this paper, the dynamics performance of frozen silty clay in permafrost regions is studied based on the indoor dynamic triaxial test at a low temperature, and at the same time, by studying the influence that several factors like cyclic matrix, confining pressure, temperature and frequency have on relevant dynamics parameters, basis can be provided for the transformation and settlement mechanism of permafrost subgrade as well as for the analysis towards the permafrost’s influence on vibration response under train load, and it offers much reference value to permafrost subgrade’s design.

Keywords: Confining pressure, dynamic parameters, dynamic triaxial test, permafrost, stepped loading.