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Analysis of one-dimensional nonlinear consolidation of a saturated lumpy porous clay layer
Wang, A. qiang1; Hu, Ya yuan1; Zhou, Wan huan2; Liu, Xing wang3
2021-09-20
Source PublicationComputers and Geotechnics
ISSN0266-352X
Volume140Pages:104458
Abstract

In reclamation projects, excavated clay is dumped without any compaction to form a landfill with a heterogeneous pore structure. In this clay, interlump fissures is several orders of magnitude larger than intralump pores, forming lumpy porous clay with double porosity. In this study, a nonlinear consolidation model is proposed for lumpy porous clay based on double porosity concept and mixture theory. The analysis follows these steps: in step 1, a representative saturated lumpy porous clay is considered as a 3-part composition, i.e., solid, fissure fluid and pore fluid, and the volume fractions are defined; in step 2, the decomposition equation is given for each part's strain, and the homogenization relation of mixture theory is used to provide the stress relation inside the saturated lumpy porous clay; in step 3, the energy balance equation is derived in terms of the energy conjugation; in step 4, according to the energy conjugation pairs, new nonlinear constitutive equations are proposed for saturated lumpy porous clay; and in step 5, using Darcy's law, the consolidation control equations are given. The model calculations are compared with experimental data, indicating that the proposed model can effectively simulate the consolidation curves of the clay observed in the laboratory.

KeywordDouble Porosity Finite Element Modelling Mixture Theory Nonlinear Consolidation Saturated Lumpy Porous Clay
DOI10.1016/j.compgeo.2021.104458
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaComputer Science ; Engineering ; Geology
WOS SubjectComputer Science, Interdisciplinary Applications ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000703387100005
PublisherELSEVIER SCI LTDTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Scopus ID2-s2.0-85115263475
Fulltext Access
FWCI0.10784703
Citation statistics
Document TypeJournal article
CollectionFaculty of Science and Technology
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorHu, Ya yuan
Affiliation1.Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou, 310058, China
2.State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering, University of Macau, Macau, 999078, Macao
3.Zhejiang Province Institute of Architectural Design and Research, Hangzhou, 310006, China
Recommended Citation
GB/T 7714
Wang, A. qiang,Hu, Ya yuan,Zhou, Wan huan,et al. Analysis of one-dimensional nonlinear consolidation of a saturated lumpy porous clay layer[J]. Computers and Geotechnics,2021,140:104458.
APA Wang, A. qiang,Hu, Ya yuan,Zhou, Wan huan,&Liu, Xing wang.(2021).Analysis of one-dimensional nonlinear consolidation of a saturated lumpy porous clay layer.Computers and Geotechnics,140,104458.
MLA Wang, A. qiang,et al."Analysis of one-dimensional nonlinear consolidation of a saturated lumpy porous clay layer".Computers and Geotechnics 140(2021):104458.
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