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不同应力状态下孔隙结构特征对土-水特征曲线的影响

陈宇龙 黄栋

陈宇龙, 黄栋. 不同应力状态下孔隙结构特征对土-水特征曲线的影响[J]. 工程科学学报, 2017, 39(1): 147-154. doi: 10.13374/j.issn2095-9389.2017.01.019
引用本文: 陈宇龙, 黄栋. 不同应力状态下孔隙结构特征对土-水特征曲线的影响[J]. 工程科学学报, 2017, 39(1): 147-154. doi: 10.13374/j.issn2095-9389.2017.01.019
CHEN Yu-long, HUANG Dong. Influence of pore structure characteristics on soil-water characteristic curves under different stress states[J]. Chinese Journal of Engineering, 2017, 39(1): 147-154. doi: 10.13374/j.issn2095-9389.2017.01.019
Citation: CHEN Yu-long, HUANG Dong. Influence of pore structure characteristics on soil-water characteristic curves under different stress states[J]. Chinese Journal of Engineering, 2017, 39(1): 147-154. doi: 10.13374/j.issn2095-9389.2017.01.019

不同应力状态下孔隙结构特征对土-水特征曲线的影响

doi: 10.13374/j.issn2095-9389.2017.01.019
基金项目: 

国家自然科学基金资助项目(41301009)

详细信息
  • 中图分类号: TU411

Influence of pore structure characteristics on soil-water characteristic curves under different stress states

  • 摘要: 针对传统土-水特征曲线测试仪无法实现荷载作用的不足,研制吸力控制式三轴试验装置,开展不同应力状态作用下土-水特征曲线试验,讨论应力状态对孔隙特征的作用.结果表明,固结压力和基质吸力均能使土体产生不可逆的收缩变形.固结压力越大,土颗粒就越紧密,孔隙比越小,孔隙尺寸和数量越小,渗透性越差,表现出较好的持水能力,空气难以进入土体,土体排水困难,导致进气值增大和减湿率减小.土-水特征曲线与孔隙结构特征的关系紧密,与应力状态无直接关系.固结压力对土-水特征曲线的影响是通过改变孔隙结构特征来体现的.孔隙结构特征相近时,应力状态对其土-水特征曲线不会产生影响.
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出版历程
  • 收稿日期:  2016-02-17

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