期刊论文

Wen, C.

中文

陆军工程大学学报

1009-3443

2016

17

3

215-221

10.12018/j.issn.1009-3443.20150923002

湖南省交通科技计划资助项目（200944）；

本校为第一且通讯机构

为探究益阳膨胀土次固结系数变化规律,研究土体长期压缩变形特性,得到方便工程运用的本构模型,以单轴固结试验为基础,延长受载周期,取益娄高速膨胀土进行长期一维固结压缩试验,探究固结压力和干密度对膨胀土样长期压缩特性的影响。试验结果表明,土样干密度对次固结系数影响相对较小,具体变化规律表现为次固结系数随干密度的增大而减小。相比之下,固结压力对次固结系数影响较大,且次固结系数随固结压力增大而增大,并呈现对数函数关系。在分析各因素对膨胀土长期压缩特性影响的基础上,建立了益阳膨胀土非线性本构模型,得到了益阳膨胀土压缩量与时间、固结压力和干密度等的关系。本构模型由主固结部...

In order to explore the change law of the secondary consolidation coefficient of Yiyang expansive soil, and the long-term compression deformation characteristics of soil, and to achieve the constitutive model for the convenience of engineering application, the long-term one-dimensional consolidation compression tests were carried out to study the effects of the consolidation pressure and dry density on the long-term compression of the expansive soil based on the uniaxial consolidation test by extending the load cycle. The results show that the ...