Post-liquefaction re-compaction effect on the cyclic behavior of natural marine silty soil in the Yellow River delta
Post-liquefaction re-compaction effect on the cyclic behavior of natural marine silty soil in the Yellow River delta
复制标题
液化后再压实对黄河三角洲天然海相粉质土循环行为的影响
DOI：
10.1016/j.oceaneng.2019.106753
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发表时间：
2020
影响因子：
5
通讯作者：
Xiaolong Zhao
中科院分区：
文献类型：
--
作者：
Song Binghui;Sun Yongfu;Song Yupeng;Lifeng Dong;Du Xing;Qikun Zhou;Xiaolong Zhao
Abstract Re-compaction process after previous liquefaction exerts significant effects on subsequent cyclic behaviour of soil. Due to the complexities in environmental loading conditions, the relevant studies on this topic are limited. In this paper, we collected natural submarine silts from non-liquefied and post-liquefied seabed in the Yellow River subaqueous delta via offshore hydraulic sampling method, respectively. Monotonic and cyclic triaxial tests were conducted between them to investigate the re-compaction effect after previous wave-induced liquefaction on the undrained static and cyclic shear behaviours of seabed soil. Our experiments indicated that due to re-compaction process, the static and cyclic strengths of seabed silt in post-liquefied area are both enhanced in comparison to non-liquefied soil. A transformation in static shear failure mode from plastic to brittle after wave-induced liquefaction could be identified in seabed silt. Furthermore, the developments of pore water pressure and cyclic axial strain with number of cycles for seabed silts could be characterized by the hyperbolic and power models, respectively, and an empirical relationship between pore water pressure and cyclic axial strain is proposed for natural seabed silt. Finally, compared with non-liquefied seabed silt, the threshold cyclic stress ratio (CSR) for post-liquefied seabed silt is also elevated due to re-compaction effect.
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DOI：
--
发表时间：
2013
期刊：
--
影响因子：
--
作者：
D. White;N. Boylan;N. H. Levy
通讯作者：
D. White;N. Boylan;N. H. Levy
大量循环三轴试验中软海相粘土的应变和孔隙压力发展
影响因子：
5
作者：
Wang Jun;Guo Lin;Cai Yuanqiang;Xu Changjie;Gu Chuan
通讯作者：
Gu Chuan
影响因子：
2.4
作者：
Gang Wang;Jiangtao Wei
通讯作者：
Gang Wang;Jiangtao Wei
影响因子：
1.7
作者：
B. Paramasivam;Subhadeep Banerjee
通讯作者：
B. Paramasivam;Subhadeep Banerjee
影响因子：
5
作者：
M. Randolph;C. Gaudin;S. Gourvenec;D. White;N. Boylan;M. Cassidy
通讯作者：
M. Randolph;C. Gaudin;S. Gourvenec;D. White;N. Boylan;M. Cassidy