Sensitivity analysis to examine tree root effectiveness in soft ground stabilisation

Indraratna, B; Fatahi, B

Sensitivity analysis to examine tree root effectiveness in soft ground stabilisation

Indraratna, B Fatahi, B

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Publication Type:: Conference Proceeding
Citation:: Proceedings of the 6th European Conference on Numerical Methods in Geotechnical Engineering - Numerical Methods in Geotechnical Engineering, 2006, pp. 735 - 741
Issue Date:: 2006-12-01

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Field	Value	Language
dc.contributor.author	Indraratna, B	en_US
dc.contributor.author	Fatahi, B https://orcid.org/0000-0002-7920-6946	en_US
dc.date.issued	2006-12-01	en_US
dc.identifier.citation	Proceedings of the 6th European Conference on Numerical Methods in Geotechnical Engineering - Numerical Methods in Geotechnical Engineering, 2006, pp. 735 - 741	en_US
dc.identifier.isbn	0415408229	en_US
dc.identifier.isbn	9780415408226	en_US
dc.identifier.uri	http://hdl.handle.net/10453/11977
dc.description.abstract	Native vegetation in Australia is becoming increasingly popular for stabilising railway corridors built over soft soils. A model previously developed to measure the rate of tree root water uptake and a computer model are used to investigate the effect of a wide range of soil, tree, and atmospheric parameters on partially saturated ground. First, sensitivity analysis is used to investigate the affect of different parameters on the maximum initial rate of root water uptake, and then a reference example is simulated using finite element analysis. The influence of parameters such as time, potential transpiration rate and its distribution factor, wilting point suction, the coefficient of permeability, and the distribution of root length density are studied. Soil suction and settlement was found to increase over time, with the effect being more significant in the first stages of transpiration. The most sensitive parameters are wilting point suction, the coefficient of saturation permeability at higher values, the rate of potential transpiration at lower values, and vertical root distribution when the coefficient is high. © 2006 Taylor & Francis Group.	en_US
dc.relation.ispartof	Proceedings of the 6th European Conference on Numerical Methods in Geotechnical Engineering - Numerical Methods in Geotechnical Engineering	en_US
dc.title	Sensitivity analysis to examine tree root effectiveness in soft ground stabilisation	en_US
dc.type	Conference Proceeding
utslib.for	090501 Civil Geotechnical Engineering	en_US
utslib.for	0905 Civil Engineering	en_US
dc.location.activity	Austria	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.publication-status	Published	en_US

Abstract:

Native vegetation in Australia is becoming increasingly popular for stabilising railway corridors built over soft soils. A model previously developed to measure the rate of tree root water uptake and a computer model are used to investigate the effect of a wide range of soil, tree, and atmospheric parameters on partially saturated ground. First, sensitivity analysis is used to investigate the affect of different parameters on the maximum initial rate of root water uptake, and then a reference example is simulated using finite element analysis. The influence of parameters such as time, potential transpiration rate and its distribution factor, wilting point suction, the coefficient of permeability, and the distribution of root length density are studied. Soil suction and settlement was found to increase over time, with the effect being more significant in the first stages of transpiration. The most sensitive parameters are wilting point suction, the coefficient of saturation permeability at higher values, the rate of potential transpiration at lower values, and vertical root distribution when the coefficient is high. © 2006 Taylor & Francis Group.

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http://hdl.handle.net/10453/11977