Undrained pore pressure behavior of soft marine clay under long-term low cyclic loads
Undrained pore pressure behavior of soft marine clay under long-term low cyclic loads
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长期低循环荷载作用下软海相粘土的不排水孔压行为
DOI：
10.1016/j.oceaneng.2017.12.045
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发表时间：
2018-02
影响因子：
5
通讯作者：
Lv Sheng Hua
中科院分区：
文献类型：
--
作者：
Ren Xing Wei;Xu Qi;Xu Cheng Bo;Teng Ji Dong;Lv Sheng Hua
海洋环境中经常遇到长期低循环荷载，但该荷载条件下土体的循环行为却鲜有研究。长期低循环荷载作用下软海相粘土的不排水孔隙压力行为对于近海和近海结构基础的正确设计和维护规划具有相当重要的意义。本文提出了一种新的双曲线模型来预测不排水孔隙压力的发展。该模型通过文献中的实验数据得到验证。与现有模型相比，所提出的模型具有更好的能力和性能。利用所提出的模型，推导了累积塑性应变与孔隙压力之间的双曲线关系，并通过实验数据进行了验证。最后，研究了循环应力比、围压和加载频率对孔隙压力的影响。总之，这项工作提供了一个新的模型和一些创新的观察结果，以更好地理解长期低循环载荷下软海相粘土的不排水孔隙压力行为。
Long-term low cyclic loads are often encountered in marine environment, but the cyclic behavior of soil under this loading condition is rarely studied. Undrained pore pressure behavior of soft marine clay subjected to long-term low cyclic loading is of considerable importance for the proper design and maintenance planning of foundations of near- and off-shore structures. In this paper, a new hyperbolic model is proposed to predict the development of undrained pore pressure. This model is verified by experimental data from literature. Compared with the existing models, the proposed model has better capability and performance. With use of the proposed model, a hyperbolic relationship between cumulative plastic strain and pore pressure was derived and verified by experimental data. Finally, the effects of cyclic stress ratio, confining pressure and loading frequency on pore pressure are investigated. In summary, this work provides a novel model and some innovative observations to better understanding undrained pore pressure behavior of soft marine clay under long-term low cyclic loads.
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DOI：
--
发表时间：
2000-06
期刊：
Journal of Tongji University
影响因子：
--
作者：
Y. Huang;Chen Zhu-chang;Zhou Hong-bo
通讯作者：
Y. Huang;Chen Zhu-chang;Zhou Hong-bo
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：
5
作者：
A. Hyde
通讯作者：
A. Hyde
影响因子：
3.6
作者：
C. Ng;Guo-bin Liu;Qing Li
通讯作者：
C. Ng;Guo-bin Liu;Qing Li
影响因子：
5
作者：
D. Jeng;Deaho Fred Cha
通讯作者：
D. Jeng;Deaho Fred Cha