土工基础

土工基础 ›› 2024, Vol. 38 ›› Issue (2): 322-327.

• 测试技术 • 上一篇    下一篇

电势梯度对真空预压联合阳极跟进电渗法加固效果试验研究

周卫东1，张志鹏2，符洪涛3   

  1. (1.广州环保投资集团有限公司，广州 510330;2.上海大学力学与工程科学学院,上海 200444；
    3.温州大学建筑工程学院，浙江温州 325035)
  • 收稿日期:2022-02-25 修回日期:2022-09-24 出版日期:2024-02-29 发布日期:2024-12-22
  • 通讯作者: 符洪涛(1987-)，男，教授，研究方向为真空预压及电渗加固地基。
  • 作者简介:周卫东(1968-)，男，经济师，研究方向为工程管理、环保工程。
  • 基金资助:
    国家自然科学基金资助项目(51878402，51878512) ；浙江省大学生科技创新活动计划（新苗人才计划）（2020R434037)

Experimental Study on the Effect of Potential Gradient on the Vacuum Preloading Combined with Anode Follow-up Electroosmosis 

ZHOU Weidong1, ZHANG Zhipeng2， FU Hongtao3   

  1. (1.Guangzhou Environmental Protection Investment Group Co. Ltd., Guangzhou 510330；
    2.School of Mechanics and Engineering Science, Shanghai University, Shanghai 200444；
    3.School of Civil Engineering and Architecture, Wenzhou University, Wenzhou 325035)
  • Received:2022-02-25 Revised:2022-09-24 Online:2024-02-29 Published:2024-12-22

摘要： 为解决真空预压联合电渗法中电极腐蚀以及电渗能耗大的问题，提出了真空预压联合阳极跟进电渗法。通过室内模型试验分析了不同电势梯度下真空预压联合阳极跟进电渗法的加固效果。试验结果表明：通过预插电极进行阳极跟进电渗法能显著提高土体加固效果。与真空预压联合电渗法相比，真空预压联合阳极跟进电渗法能使排水量增加31.3%，平均土表沉降增加15.9%，土体整体含水率更低。采用高电势梯度的真空预压联合阳极跟进电渗法能提高土体整体加固效果，而采用低电势梯度处理后的土体均匀性更优且单位排水量所需能耗更低。


关键词: 真空预压, 电渗法, 阳极跟进, 电势梯度

Abstract: To solve the issue of the electrode corrosion and high energy consumption in the vacuum preloading combined with electroosmosis, an improved method, namely, the vacuum preloading combined with the anode follow-up electroosmosis is proposed in this paper. The soil improvement effect of the vacuum preloading combined with the anode follow-up electroosmosis under different potential gradients was evaluated by a series of laboratory model tests. The test results show that the anode follow-up electroosmosis method with the pre-inserted electrode can significantly improve the soil strengthening effect. Compared with the vacuum preloading combined with the electroosmosis, the vacuum preloading combined with the anode follow-up electroosmosis methods can increase the water discharge by 31.3%, the average soil surface settlement increase by 15.9%, the overall water content in the improved soil is also lower. The vacuum preloading with the high potential gradient combined with the anode follow-up electroosmosis method can improve the overall soil strengthening effect, while the soil homogeneity with the low potential gradient is better and the energy consumption per unit water discharge is lower. 

Key words: Vacuum Preloading, Electroosmosis, Anode Followup, Potential Gradient

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