5.00
Hdl Handle:
http://hdl.handle.net/2436/620681
Title:
An analysis of passive earth pressure modification due to seepage flow effects
Authors:
Hu, Zheng; Yang, Zhongxuan; Wilkinson, Stephen Philip; Wilkinson, Stephen ( 0000-0001-9400-4747 )
Abstract:
Using an assumed vertical retaining wall with a drainage system along the soil-structure interface, this paper analyses the effect of anisotropic seepage flow on the development of passive earth pressure. Extremely unfavourable seepage flow inside the backfill, perhaps due to heavy rainfall, will dramatically increase the active earth pressure while reducing the passive earth pressure; thus increasing the probability of instability of the retaining structure. In this paper, a trial and error analysis based on limit equilibrium is applied to identify the optimum failure surface. The flow field is computed using Fourier series expansion, and the effective reaction force along the curved failure surface is obtained by solving a modified Kötter equation considering the effect of seepage flow. This approach correlates well with other existing results. For small values of both the internal friction angle and the interface friction angle, the failure surface can be appropriately simplified with a planar approximation. A parametric study indicates that the degree of anisotropic seepage flow affects the resulting passive earth pressure. In addition, incremental increases in the effective friction angle and interface friction both lead to an increase in the passive earth pressure.
Citation:
An analysis of passive earth pressure modification due to seepage flow effects 2017 Canadian Geotechnical Journal
Publisher:
NRC Research Press
Journal:
Canadian Geotechnical Journal
Issue Date:
13-Sep-2017
URI:
http://hdl.handle.net/2436/620681
DOI:
10.1139/cgj-2017-0087
Additional Links:
http://www.nrcresearchpress.com/doi/10.1139/cgj-2017-0087
Type:
Article
Language:
en
ISSN:
0008-3674
Sponsors:
National Key Basic Research Program of China (No. 2015CB057801), the National Key R & D program of China (No. 2016YFC0800204), and Natural Science Foundation of China (Nos. 51578499 & 51761130078),
Appears in Collections:
Construction and Infrastructure

Full metadata record

DC FieldValue Language
dc.contributor.authorHu, Zhengen
dc.contributor.authorYang, Zhongxuanen
dc.contributor.authorWilkinson, Stephen Philipen
dc.contributor.authorWilkinson, Stephenen
dc.date.accessioned2017-09-21T14:49:25Z-
dc.date.available2017-09-21T14:49:25Z-
dc.date.issued2017-09-13-
dc.identifier.citationAn analysis of passive earth pressure modification due to seepage flow effects 2017 Canadian Geotechnical Journalen
dc.identifier.issn0008-3674en
dc.identifier.doi10.1139/cgj-2017-0087-
dc.identifier.urihttp://hdl.handle.net/2436/620681-
dc.description.abstractUsing an assumed vertical retaining wall with a drainage system along the soil-structure interface, this paper analyses the effect of anisotropic seepage flow on the development of passive earth pressure. Extremely unfavourable seepage flow inside the backfill, perhaps due to heavy rainfall, will dramatically increase the active earth pressure while reducing the passive earth pressure; thus increasing the probability of instability of the retaining structure. In this paper, a trial and error analysis based on limit equilibrium is applied to identify the optimum failure surface. The flow field is computed using Fourier series expansion, and the effective reaction force along the curved failure surface is obtained by solving a modified Kötter equation considering the effect of seepage flow. This approach correlates well with other existing results. For small values of both the internal friction angle and the interface friction angle, the failure surface can be appropriately simplified with a planar approximation. A parametric study indicates that the degree of anisotropic seepage flow affects the resulting passive earth pressure. In addition, incremental increases in the effective friction angle and interface friction both lead to an increase in the passive earth pressure.en
dc.description.sponsorshipNational Key Basic Research Program of China (No. 2015CB057801), the National Key R & D program of China (No. 2016YFC0800204), and Natural Science Foundation of China (Nos. 51578499 & 51761130078),en
dc.language.isoenen
dc.publisherNRC Research Pressen
dc.relation.urlhttp://www.nrcresearchpress.com/doi/10.1139/cgj-2017-0087en
dc.rightsArchived with thanks to Canadian Geotechnical Journalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectpassive earth pressureen
dc.subjectanisotropic seepageen
dc.subjectretaining wallen
dc.subjectKötter equationen
dc.subjectcohesionless soilsen
dc.titleAn analysis of passive earth pressure modification due to seepage flow effectsen
dc.typeArticleen
dc.identifier.journalCanadian Geotechnical Journalen
dc.contributor.institutionZhejiang University, 12377, Department of Civil Engineering, Zhejiang University, B700, Anzhong Building, 866 Yuhangtang Road, Hangzhou, Zhejiang, China, 310058, ;-
dc.contributor.institutionZhejiang University, Department of Civil Engineering, B712 Anzhong Building, Zijingang Campus, Zhejiang University, 866 Yuhangtang, Hangzhou, China, 310058, ;-
dc.contributor.institutionUniversity of Wolverhampton, 8695, Department of Civil Engineering, Wolverhampton, West Midlands, United Kingdom of Great Britain and Northern Ireland;-
dc.date.accepted2017-09-
rioxxterms.funderNational Key Basic Research Program of China (No. 2015CB057801), the National Key R & D program of China (No. 2016YFC0800204), and Natural Science Foundation of China (Nos. 51578499 & 51761130078)en
rioxxterms.identifier.projectUoW210917SWen
rioxxterms.versionAMen
rioxxterms.licenseref.urihttps://creativecommons.org/CC BY-NC-ND 4.0en
rioxxterms.licenseref.startdate2017-09-21en
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