基于电渗法的新近吹填土快速结壳试验
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TU472

基金项目:

国家自然科学基金(51608351);天津市自然科学基金(18JCYBJC22600, 18JCQNJC77900)


Experimental study on rapid crusting of fresh dredger fill based on electroosmosis
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 文章评论
    摘要:

    针对新近吹填土地基承载力低,无法满足机械进场施工的问题,基于电渗固结阳极区域土体固结快的特点,设计了一种新近吹填土快速结壳电渗电极,采用该电极分别开展了电渗、真空不同联合方式的室内试验,对比分析了排水量、电渗能耗、最终含水率、抗剪强度及承载力等土性参数指标。结果表明:采用该电渗电极处理后的吹填土含水率降低31.0%~61.4%,土体表层承载力最高可达192 kPa;单纯电渗处理后土层抗剪强度沿深度衰减,电渗-真空联合作用下土层抗剪强度更高且分布均匀;设计的电渗电极可实现高含水率新近吹填土浅表层快速加固。

    Abstract:

    To solve the problem that the low bearing capacity of fresh dredger fill foundation that cannot meet the requirement of mechanical construction, a kind of electroosmosis electrode was developed for rapid crust of freshly dredger fill based on the characteristics of fast consolidation of soil in the anode area in electroosmosis consolidation. Laboratory tests of different combination of electroosmosis and vacuum with the electrode were carried out, and the soil parameter indexes such as soil discharge, electroosmotic energy consumption, final moisture content, shear strength and bearing capacity were comparative analyzed. The results show that the moisture content of the dredger fill is reduced by 31. 0% to 61. 4% after the treatment of electroosmosis electrode, and the bearing capacity of the surface layer is up to 192 kPa. After electroosmotic treatment, the shear strength of the soil layer decreases along the depth. Under the combined action of electroosmosis and vacuum, the shear strength of soil layer is higher and more uniform. The developed electroosmosis electrode can realize rapid reinforcement of the near-surface layer of fresh shallow dredger fill with high water content.

    参考文献
    相似文献
    引证文献
引用本文

周亚东,张超,李琳,等.基于电渗法的新近吹填土快速结壳试验[J].水利水电科技进展,2021,41(3):72-76.(ZHOU Yadong, ZHANG Chao, LI Lin, et al. Experimental study on rapid crusting of fresh dredger fill based on electroosmosis[J]. Advances in Science and Technology of Water Resources,2021,41(3):72-76.(in Chinese))

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2021-06-23
  • 出版日期: