改进高含水量软粘土上的真空-荷载预压结合电渗固结技术

IF 4.7 1区 工程技术 Q1 ENGINEERING, GEOLOGICAL
Lei Zhang , Haihui Jin , Yandong Lv , Binhui Wang , Zhongze Jia , Fangyu Hou , Chen Fang , Liyan Wang , Dandan Jin
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引用次数: 0

摘要

本研究对软粘土进行了实验室测试,以研究真空-充填预压和电渗处理(EOC-VPM-SPM)组合的有效性。为了在固结过程中尽量减少真空压力的损失和减轻排水系统的堵塞,通过优化排水板的技术特性和几何布局,开发了两种改进方法。在 EOC-Alternate VPM-SPM 方法中,在 VPM 系统中使用两块不同长度的排水板,结合 EOC 来交替使用真空压力,以提高固结效率。在多电极 EOC-VPM-SPM 方法中,采用了通过三维打印制造的方管布局多排水板的新设计,以提供固结系统的高效连接。此外,电动力土工合成材料(EKG)被用作 EOC 系统的阴极,以最大限度地减少电极的侵蚀和钝化,从而提高固结效率。对测试土壤的特性进行了分析,以评估改进方法的可行性。测试结果表明,固结效果明显改善,有效缓解了排水系统的堵塞。与传统方法相比,改进方法降低了测试土壤的含水量,从而提高了强度分布的均匀性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Improvements in vacuum-surcharge preloading combined with electro-osmotic consolidation on soft clayey soil with high water content

This study conducted laboratory tests on soft clayey soils to investigate the effectiveness of the combinations of vacuum-surcharge preloading and electro-osmotic treatment (EOC-VPM-SPM). To minimize the loss of vacuum pressure and mitigate clogging of the drainage system during the consolidation process, two improved methods were developed by optimizing technical characteristics and geometric layout of drainage boards. In the EOC-Alternate VPM-SPM method, alternate vacuum pressure was incorporated using two drainage boards with different lengths in the VPM system, combined with EOC to improve consolidation efficiency. In the multiple-electrodes EOC-VPM-SPM method, a new design of multiple drainage boards in a square tube layout fabricated through 3D printing was employed to provide efficient connections of the consolidation system. Furthermore, electrokinetic geosynthetics (EKG) was utilized as the cathode in the EOC system to minimize erosion and passivation of electrodes for the enhancement in consolidation efficiency. The properties of tested soils were analyzed to evaluate the feasibility of the improved methods. Test results indicated that the consolidation effects were significantly improved, with effectively mitigated clogging of the drainage system. Compared to the traditional method, the water content of the tested soil was reduced through the improved methods, resulting in increased uniformity of strength distribution.

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来源期刊
Geotextiles and Geomembranes
Geotextiles and Geomembranes 地学-地球科学综合
CiteScore
9.50
自引率
21.20%
发文量
111
审稿时长
59 days
期刊介绍: The range of products and their applications has expanded rapidly over the last decade with geotextiles and geomembranes being specified world wide. This rapid growth is paralleled by a virtual explosion of technology. Current reference books and even manufacturers' sponsored publications tend to date very quickly and the need for a vehicle to bring together and discuss the growing body of technology now available has become evident. Geotextiles and Geomembranes fills this need and provides a forum for the dissemination of information amongst research workers, designers, users and manufacturers. By providing a growing fund of information the journal increases general awareness, prompts further research and assists in the establishment of international codes and regulations.
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