A unified constitutive model for unsaturated soil under monotonic and cyclic loading
A unified constitutive model for unsaturated soil under monotonic and cyclic loading
复制标题
单调循环荷载下非饱和土的统一本构模型
DOI：
10.1007/s11440-018-0754-2
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发表时间：
2018-11
期刊：
影响因子：
5.7
通讯作者：
Zhang Feng
中科院分区：
文献类型：
--
作者：
Xiong Yong lin;Ye Guan lin;Xie Yi;Ye Bin;Zhang Sheng;Zhang Feng
在临界状态土力学框架下，以Bishop型骨架应力和饱和度为状态变量，提出了一种复杂的非饱和土弹塑性本构模型。该模型的提出是为了描述耦合的非饱和土的流体力学行为，而不管什么样的荷载或排水条件可能是。同时提出了考虑变形对饱和度影响的保水特征曲线。模型中引入了超载和超载的概念，考虑了超固结和结构性对土体变形和强度的影响。该模型仅采用9个参数，其中5个参数与剑桥模型中的参数相同。其余四个参数物理意义明确，易于通过常规土工试验确定。通过一系列的室内试验，如在不同的力学和水力条件下的各向同性加载试验和三轴单调和循环压缩试验，验证了所提出的模型的能力和精度。
This study presents a sophisticated elastoplastic constitutive model for unsaturated soil using Bishop-type skeleton stress and degree of saturation as state variables in the framework of critical state soil mechanism. The model is proposed in order to describe the coupled hydromechanical behavior of unsaturated soil irrespective of what kind of the loadings or the drainage conditions may be. At the same time, a water retention characteristic curve considering the influence of deformation on degree of saturation is also proposed. In the model, the superloading and subloading concepts are introduced to consider the influences of overconsolidation and structure on deformation and strength of soils. The proposed model only employs nine parameters, among which five parameters are the same as those used in Cam-Clay model. The other four parameters have the clear physical meanings and can be easily determined by conventional soil tests. The capability and accuracy of the proposed model have been validated carefully through a series of laboratory tests such as isotropic loading tests and triaxial monotonic and cyclic compression tests under different mechanical and hydraulic conditions.
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影响因子：
3.7
作者：
Y. Kohgo;M. Nakano;T. Miyazaki
通讯作者：
Y. Kohgo;M. Nakano;T. Miyazaki
影响因子：
2.8
作者：
Xiaoyu Song;R. Borja
通讯作者：
Xiaoyu Song;R. Borja
影响因子：
3.6
作者：
D. Sheng;Annan Zhou
通讯作者：
D. Sheng;Annan Zhou
DOI：
10.1002/nag.1610191202
发表时间：
1995-12
影响因子：
4
作者：
J. Hsu;D. Jeng;C. P. Lee
通讯作者：
J. Hsu;D. Jeng;C. P. Lee
影响因子：
3.7
作者：
Feng Zhang;B. Ye;T. Noda;M. Nakano;K. Nakai
通讯作者：
Feng Zhang;B. Ye;T. Noda;M. Nakano;K. Nakai