Analysis of Matric Suction Effects Induced by Tree Roots on Rail Track Subgrade

Fatahi, B; Khabbaz, H; Indraratna, B

Analysis of Matric Suction Effects Induced by Tree Roots on Rail Track Subgrade

Fatahi, B

Khabbaz, H

Indraratna, B

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Publisher:: RTSA
Publication Type:: Conference Proceeding
Citation:: Conference Proceedings: CORE2008 Conference on Railway Engineering, 2008, pp. 599 - 610
Issue Date:: 2008-01

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Field	Value	Language
dc.contributor.author	Fatahi, B https://orcid.org/0000-0002-7920-6946	en_US
dc.contributor.author	Khabbaz, H https://orcid.org/0000-0001-6637-4601	en_US
dc.contributor.author	Indraratna, B	en_US
dc.contributor.editor	Goodall, J	en_US
dc.contributor.editor	Singleton, B	en_US
dc.date	2008-09-07	en_US
dc.date.issued	2008-01	en_US
dc.identifier.citation	Conference Proceedings: CORE2008 Conference on Railway Engineering, 2008, pp. 599 - 610	en_US
dc.identifier.isbn	0-8582-5783-1	en_US
dc.identifier.uri	http://hdl.handle.net/10453/11118
dc.description.abstract	This study investigates the eflects of vegetation on soil matric suction and ground deformation. This paper highlights the inter-related parameters contributing to the development of a conceptual evapo-transpiration and root water uptake equilibrium model that is then incorporated in a comprehensive numerical model. The developed numerical model based on the finite element analysis (ABAQUS) considers fully coupled flowdeformation behaviour of soil. The model formulation is based on the effective stress approach developed for unsaturated soils. Based on the proposed model, the distribution of the matric suction proflle adjacent to the tree has been numerically anaiysed. To validate the model, an array of field measurements conducted at Miram site in Victoria, Australia have been compared with the numerical predictions. Then behaviour of a single tree on improving soil behaviour underneath rail tracks has been described. II is found that root water uptake and associated matric suction stabilise the soft soil beneath railway lines and a pattern of trees grown systematically along rail corridors may olter a cost eltective and environmentally attractive solution for the soft ground improvement in the long-term.	en_US
dc.publisher	RTSA	en_US
dc.relation.ispartof	Conference Proceedings: CORE2008 Conference on Railway Engineering	en_US
dc.relation.ispartof	Conference on Railway Engineering	en_US
dc.title	Analysis of Matric Suction Effects Induced by Tree Roots on Rail Track Subgrade	en_US
dc.type	Conference Proceeding
utslib.location	Australia	en_US
utslib.location.activity	Perth, WA, Australia	en_US
utslib.for	090501 Civil Geotechnical Engineering	en_US
utslib.for	0905 Civil Engineering	en_US
dc.location.activity	Perth, WA, Australia	en_US
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	false	en_US
pubs.place-of-publication	Australia	en_US
pubs.start-date	2008-09-07	en_US

Abstract:

This study investigates the eflects of vegetation on soil matric suction and ground deformation. This paper highlights the inter-related parameters contributing to the development of a conceptual evapo-transpiration and root water uptake equilibrium model that is then incorporated in a comprehensive numerical model. The developed numerical model based on the finite element analysis (ABAQUS) considers fully coupled flowdeformation behaviour of soil. The model formulation is based on the effective stress approach developed for unsaturated soils. Based on the proposed model, the distribution of the matric suction proflle adjacent to the tree has been numerically anaiysed. To validate the model, an array of field measurements conducted at Miram site in Victoria, Australia have been compared with the numerical predictions. Then behaviour of a single tree on improving soil behaviour underneath rail tracks has been described. II is found that root water uptake and associated matric suction stabilise the soft soil beneath railway lines and a pattern of trees grown systematically along rail corridors may olter a cost eltective and environmentally attractive solution for the soft ground improvement in the long-term.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/11118