Study on two-dimensional electroosmotic consolidation of punctiform electrode units with symmetric and asymmetric forms

doi:10.13722/j.cnki.jrme.2020.0983

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Study on two-dimensional electroosmotic consolidation of punctiform electrode units with symmetric and asymmetric forms
	Yang, Xiaoyu 1,2; Dong, Jianhua 1,2; Liu, Guosheng 1,2; Xie, Yongbin 1,2
刊名	Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
	2021-07-01
卷号	40 期号:7 页码:1491-1503
关键词	Electric potential Electroosmosis Galerkin methods Information dissemination Pore pressure Pressure distribution Water Electric potential fields Electrode arrangement Electroosmotic consolidation Excess pore water pressure Experimental verification Negative exponential Pore-water pressures Two-dimensional effects
ISSN号	10006915
DOI	10.13722/j.cnki.jrme.2020.0983
英文摘要	Aiming at the calculation of the electroosmotic consolidation model with a large spacing of same nature electrodes, the concept of punctiform electrode unit is proposed according to the electrode arrangement form, and a two-dimensional electroosmotic consolidation theory of the punctiform electrode unit is established based on the punctiform electrode unit model. The governing equation is discretized by the Galerkin method, and the finite element forms of the governing equations of the electric potential field and the pore water pressure field are developed. A two-dimensional electroosmotic consolidation calculation numerical module PyEcFem is developed by Python language. The numerical simulation of the two-dimensional effect of symmetric units and the electroosmotic consolidation calculation of asymmetric units are performed, and the experimental verification is carried out. Results show that the numbers of the drainage boundaries and the number of the anodes respectively play a major role in the drainage rate in the early and later stages of electroosmosis, and that both the drainage effect and the negative pore pressure of asymmetric units are higher than those of symmetrical units. For the symmetric units, the electrode spacing ratio can describe the potential drop amplitude on the same polarity boundary, and the smaller the same polarity electrode spacing, the smaller the two-dimensional effect coefficient, obeying a negative exponential relationship. For the electroosmotic consolidation of the asymmetric units, the limitation of the drainage capacity of the units will cause the accumulation of the pore water pressure in the cathode area at the initial stage of electroosmosis, generating local positive excess pore water pressure, which will affect the change rate and the extreme value of the negative pore water pressure. © 2021, Science Press. All right reserved.
语种	中文
出版者	Biodiversity Research Center, Academia Sinica
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150696]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Western Center of Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Yang, Xiaoyu,Dong, Jianhua,Liu, Guosheng,et al. Study on two-dimensional electroosmotic consolidation of punctiform electrode units with symmetric and asymmetric forms[J]. Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering,2021,40(7):1491-1503.
APA	Yang, Xiaoyu,Dong, Jianhua,Liu, Guosheng,&Xie, Yongbin.(2021).Study on two-dimensional electroosmotic consolidation of punctiform electrode units with symmetric and asymmetric forms.Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering,40(7),1491-1503.
MLA	Yang, Xiaoyu,et al."Study on two-dimensional electroosmotic consolidation of punctiform electrode units with symmetric and asymmetric forms".Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering 40.7(2021):1491-1503.