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Importance of considering unsaturated triaxial tests including ceramic disk as initial and boundary value problems
Soils and Foundations ( IF 3.7 ) Pub Date : 2021-03-05 , DOI: 10.1016/j.sandf.2020.12.009
Takahiro Yoshikawa , Toshihiro Noda , Takeshi Kodaka

Considering unsaturated triaxial tests including a ceramic disk as initial and boundary value problems, a series of suction change, isotropic consolidation, and drained shearing processes was simulated using a soil-water-air coupled elastoplastic finite deformation analysis code. As a result, it was demonstrated that the delayed behavior of a wetting-induced collapse during the suction change and isotropic consolidation processes, as well as water-absorption behavior during the subsequent drained shearing process, were attributed not to the characteristics of the soil specimen, but to the permeability of the disk. Thus, it is important to take the ceramic disk into account in unsaturated triaxial tests regarded as initial and boundary value problems in order to understand the temporal change behavior of unsaturated soil specimens. Otherwise, there is a risk that the behavior appearing as the solution of an initial and boundary value problem may be modeled as a constitutive relation.



中文翻译:

考虑包括陶瓷圆盘在内的不饱和三轴试验作为初值和边值问题的重要性

考虑包括陶瓷圆盘在内的不饱和三轴试验作为初始和边界值问题,使用土-水-空气耦合弹塑性有限变形分析代码模拟了一系列吸力变化、各向同性固结和排水剪切过程。结果表明,吸力变化和各向同性固结过程中润湿塌陷的延迟行为,以及随后排水剪切过程中的吸水行为,都不是由于土样的特性造成的。 ,但与磁盘的磁导率有关。因此,在被视为初始和边界值问题的非饱和三轴试验中考虑陶瓷盘是很重要的,以便了解非饱和土试样的时间变化行为。除此以外,

更新日期:2021-03-05
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