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A simplified axisymmetric model for column supported embankment systems
Zhao, Lin-Shuang1; Zhou, Wan-Huan1,2; Yuen, Ka-Veng1
2017-12
Source PublicationCOMPUTERS AND GEOTECHNICS
ISSN0266-352X
Volume92Pages:96-107
Abstract

In this study, a simplified axisymmetric model is built to simulate a column supported embankment system. The model is based on a cylindrical unit cell that contains one column with the surrounding soil and a layer of overlying embankment fill. The deformation of the column with the surrounding soil is simulated using a deformed shape function. The embankment fill is divided into an inner cylinder and an outer hollow cylinder to simulate the soil arching effect. The stress continuity and volume deformation continuity are applied to combine the behavior of the embankment fill and that of the column-reinforced foundation together. A semi-analytical solution is obtained, and it is verified using a finite element analysis and a case study. After that, parametric studies are put forward to evaluate the load transfer mechanism within the embankment fill, the shear stress at the interface between the column and the surrounding soil, and the vertical stress distribution within the column. The influences of the column modulus, the spacing between columns, the height of the embankment fill, and the length of the column on the soil arching effect are investigated and discussed. It is concluded that when the column modulus becomes larger, the stress ratio between the column and the surrounding soil increases correspondingly. The height of equal settlement plane is close to the net spacing between columns, but it changes slightly with a change in the column modulus. (C) 2017 Elsevier Ltd. All rights reserved.

KeywordColumn Supported Embankment Axisymmetric Model Load Transfer Modulus Ratio Stress Ratio
DOI10.1016/j.compgeo.2017.07.027
URLView the original
Indexed BySCI
Language英语
WOS Research AreaComputer Science ; Engineering ; Geology
WOS SubjectComputer Science, Interdisciplinary Applications ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000414878800008
PublisherELSEVIER SCI LTD
The Source to ArticleWOS
Fulltext Access
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Cited Times [WOS]:7   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Affiliation1.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Ave Univ, Taipa, Macau, Peoples R China
2.UMacau Res Inst, Zhuhai, Guangdong, Peoples R China
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Zhao, Lin-Shuang,Zhou, Wan-Huan,Yuen, Ka-Veng. A simplified axisymmetric model for column supported embankment systems[J]. COMPUTERS AND GEOTECHNICS,2017,92:96-107.
APA Zhao, Lin-Shuang,Zhou, Wan-Huan,&Yuen, Ka-Veng.(2017).A simplified axisymmetric model for column supported embankment systems.COMPUTERS AND GEOTECHNICS,92,96-107.
MLA Zhao, Lin-Shuang,et al."A simplified axisymmetric model for column supported embankment systems".COMPUTERS AND GEOTECHNICS 92(2017):96-107.
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