Study on Electroosmosis Consolidation of Punctiform Electrode Unit
In the electroosmosis method, when the distance between the opposite electrode and the same electrode is equal, the two-dimensional effect of electroosmotic consolidation is significant, and the use of one-dimensional model will overestimate the potential gradient, making the calculated pore pressur...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/6627331 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832560087235821568 |
|---|---|
| author | Xiaoyu Yang Yongbin Xie Jianhua Dong Guosheng Liu Yalin Zheng |
| author_facet | Xiaoyu Yang Yongbin Xie Jianhua Dong Guosheng Liu Yalin Zheng |
| author_sort | Xiaoyu Yang |
| collection | DOAJ |
| description | In the electroosmosis method, when the distance between the opposite electrode and the same electrode is equal, the two-dimensional effect of electroosmotic consolidation is significant, and the use of one-dimensional model will overestimate the potential gradient, making the calculated pore pressure value too large. Aiming at this problem, according to the electrode arrangement rule and the minimum composition, a punctiform electrode unit model is proposed, and electroosmotic experiments are carried out on the symmetric and asymmetric unit models. The two-dimensional electroosmotic consolidation governing equation of the punctiform electrode unit is established. The electric potential field of the electrode unit and the finite element form of the electroosmotic consolidation equation are given by the Galerkin method. The PyEcFem finite-element numerical library is developed using Python programming to calculate. The research results show the following: (1) The two-dimensional effect of the potential field distribution of the punctiform electrode unit is significant. The reduction of spacing of the same nature electrode in the symmetrical unit can make the potential distribution close to a uniform electric field. The asymmetry prevents the electric potential field distribution from being reduced to a one-dimensional model. (2) The number of anodes will affect the electroosmosis effect of the soil. The more the anodes, the better the electroosmosis reinforcement effect of the soil, and the distribution of negative excess pore water pressure will be more uniform. (3) In the early stage of electroosmosis, the more the drainage boundaries, the faster the generation of negative pore pressure, but in the middle and late stages of electroosmosis, the potential value becomes the decisive factor, and the amplitude of negative pore water pressure in asymmetric units is higher than that in symmetric units. The potential distribution will not affect the degree of consolidation but will affect the extreme pore water pressure. |
| format | Article |
| id | doaj-art-0da53b93c22b4972b5c1ffa5fc32bf8a |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-0da53b93c22b4972b5c1ffa5fc32bf8a2025-02-03T01:28:28ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/66273316627331Study on Electroosmosis Consolidation of Punctiform Electrode UnitXiaoyu Yang0Yongbin Xie1Jianhua Dong2Guosheng Liu3Yalin Zheng4Western Centre of Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, ChinaWestern Centre of Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, ChinaWestern Centre of Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, ChinaWestern Centre of Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, ChinaWestern Centre of Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, ChinaIn the electroosmosis method, when the distance between the opposite electrode and the same electrode is equal, the two-dimensional effect of electroosmotic consolidation is significant, and the use of one-dimensional model will overestimate the potential gradient, making the calculated pore pressure value too large. Aiming at this problem, according to the electrode arrangement rule and the minimum composition, a punctiform electrode unit model is proposed, and electroosmotic experiments are carried out on the symmetric and asymmetric unit models. The two-dimensional electroosmotic consolidation governing equation of the punctiform electrode unit is established. The electric potential field of the electrode unit and the finite element form of the electroosmotic consolidation equation are given by the Galerkin method. The PyEcFem finite-element numerical library is developed using Python programming to calculate. The research results show the following: (1) The two-dimensional effect of the potential field distribution of the punctiform electrode unit is significant. The reduction of spacing of the same nature electrode in the symmetrical unit can make the potential distribution close to a uniform electric field. The asymmetry prevents the electric potential field distribution from being reduced to a one-dimensional model. (2) The number of anodes will affect the electroosmosis effect of the soil. The more the anodes, the better the electroosmosis reinforcement effect of the soil, and the distribution of negative excess pore water pressure will be more uniform. (3) In the early stage of electroosmosis, the more the drainage boundaries, the faster the generation of negative pore pressure, but in the middle and late stages of electroosmosis, the potential value becomes the decisive factor, and the amplitude of negative pore water pressure in asymmetric units is higher than that in symmetric units. The potential distribution will not affect the degree of consolidation but will affect the extreme pore water pressure.http://dx.doi.org/10.1155/2021/6627331 |
| spellingShingle | Xiaoyu Yang Yongbin Xie Jianhua Dong Guosheng Liu Yalin Zheng Study on Electroosmosis Consolidation of Punctiform Electrode Unit Advances in Materials Science and Engineering |
| title | Study on Electroosmosis Consolidation of Punctiform Electrode Unit |
| title_full | Study on Electroosmosis Consolidation of Punctiform Electrode Unit |
| title_fullStr | Study on Electroosmosis Consolidation of Punctiform Electrode Unit |
| title_full_unstemmed | Study on Electroosmosis Consolidation of Punctiform Electrode Unit |
| title_short | Study on Electroosmosis Consolidation of Punctiform Electrode Unit |
| title_sort | study on electroosmosis consolidation of punctiform electrode unit |
| url | http://dx.doi.org/10.1155/2021/6627331 |
| work_keys_str_mv | AT xiaoyuyang studyonelectroosmosisconsolidationofpunctiformelectrodeunit AT yongbinxie studyonelectroosmosisconsolidationofpunctiformelectrodeunit AT jianhuadong studyonelectroosmosisconsolidationofpunctiformelectrodeunit AT guoshengliu studyonelectroosmosisconsolidationofpunctiformelectrodeunit AT yalinzheng studyonelectroosmosisconsolidationofpunctiformelectrodeunit |