Influence Of Insitu Stresses On Deformation And Stability Of Embankments On Deep Clays

Fatahi, B; Le, T; Khabbaz, H

Influence Of Insitu Stresses On Deformation And Stability Of Embankments On Deep Clays

Fatahi, B

Le, T Khabbaz, H

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Publisher:: Research Publishing
Publication Type:: Conference Proceeding
Citation:: Proceedings of the International Conference on Ground Improvement and Ground Control, 2013, pp. 491 - 496
Issue Date:: 2013-01

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Field	Value	Language
dc.contributor.author	Fatahi, B https://orcid.org/0000-0002-7920-6946	en_US
dc.contributor.author	Le, T	en_US
dc.contributor.author	Khabbaz, H https://orcid.org/0000-0001-6637-4601	en_US
dc.contributor.editor	Indraratna, B	en_US
dc.contributor.editor	Rujikiatkamjorn, C	en_US
dc.contributor.editor	Vinod, J	en_US
dc.date	2012-10-30	en_US
dc.date.issued	2013-01	en_US
dc.identifier.citation	Proceedings of the International Conference on Ground Improvement and Ground Control, 2013, pp. 491 - 496	en_US
dc.identifier.uri	http://hdl.handle.net/10453/31521
dc.description.abstract	Time dependent behavior of soft soils under embankments is one of the challenging problems in geotechnical engineering, since soft ground has been utilised for development. This paper presents a numerical study of the influence of the initial stress state on the ground lateral deformation and pore water pressure by revisiting a case study of an embankment constructed on Boston Blue Clay. The insitu stress state is usually determined by the coefficient of lateral earth pressure at rest (K0), but there are various correlations to estimate the value of K0. In this paper, a numerical parametric study is conducted to investigate the effect of K0 on the vertical and horizontal displacements, the excess pore water pressures, and the factor of safety of the embankment. The results show that the value of K0 has notable influences on the predictions of horizontal and vertical displacements, but minor effects on the predicted pore water pressures. The choice of the lateral earth pressure coefficient at rest also has impact on the long term stability of the embankment. Thus, it is emphasised that the initial stress state should be concerned regarding the stability of the embankment for analysing the performance of embankments constructed on deep soft soils.	en_US
dc.publisher	Research Publishing	en_US
dc.relation.ispartof	Proceedings of the International Conference on Ground Improvement and Ground Control	en_US
dc.relation.ispartof	Ground Improvement And Ground Control: Transport Infrastructure Development and Natural Hazards Mitigation	en_US
dc.relation.isbasedon	10.3850/978-***********-3_01-0123	en_US
dc.title	Influence Of Insitu Stresses On Deformation And Stability Of Embankments On Deep Clays	en_US
dc.type	Conference Proceeding
utslib.location	Singapore	en_US
utslib.location.activity	Wollongong, Australia	en_US
utslib.for	090501 Civil Geotechnical Engineering	en_US
utslib.for	0905 Civil Engineering	en_US
dc.location.activity	Wollongong, Australia
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.consider-herdc	true	en_US
pubs.finish-date	2012-11-02	en_US
pubs.place-of-publication	Singapore	en_US
pubs.start-date	2012-10-30	en_US

Abstract:

Time dependent behavior of soft soils under embankments is one of the challenging problems in geotechnical engineering, since soft ground has been utilised for development. This paper presents a numerical study of the influence of the initial stress state on the ground lateral deformation and pore water pressure by revisiting a case study of an embankment constructed on Boston Blue Clay. The insitu stress state is usually determined by the coefficient of lateral earth pressure at rest (K0), but there are various correlations to estimate the value of K0. In this paper, a numerical parametric study is conducted to investigate the effect of K0 on the vertical and horizontal displacements, the excess pore water pressures, and the factor of safety of the embankment. The results show that the value of K0 has notable influences on the predictions of horizontal and vertical displacements, but minor effects on the predicted pore water pressures. The choice of the lateral earth pressure coefficient at rest also has impact on the long term stability of the embankment. Thus, it is emphasised that the initial stress state should be concerned regarding the stability of the embankment for analysing the performance of embankments constructed on deep soft soils.

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http://hdl.handle.net/10453/31521