Effects of installing controlled modulus columns on previously installed columns

Nguyen, HH; Khabbaz, H; Fatahi, B; Hsi, J

Effects of installing controlled modulus columns on previously installed columns

Nguyen, HH Khabbaz, H

Fatahi, B

Hsi, J

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Publication Type:: Conference Proceeding
Citation:: ICSMGE 2017 - 19th International Conference on Soil Mechanics and Geotechnical Engineering, 2017, 2017-September pp. 2611 - 2614
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Nguyen, HH	en_US
dc.contributor.author	Khabbaz, H https://orcid.org/0000-0001-6637-4601	en_US
dc.contributor.author	Fatahi, B https://orcid.org/0000-0002-7920-6946	en_US
dc.contributor.author	Hsi, J	en_US
dc.date.available	2017-05-01	en_US
dc.date.issued	2017-01-01	en_US
dc.identifier.citation	ICSMGE 2017 - 19th International Conference on Soil Mechanics and Geotechnical Engineering, 2017, 2017-September pp. 2611 - 2614	en_US
dc.identifier.uri	http://hdl.handle.net/10453/121537
dc.description.abstract	© 2018 19th ICSMGE Secretariat. All rights reserved. Controlled modulus columns (CMC) ground improvement technique is an attractive geotechnical solution for modification of soft soils. This technique uses a displacement auger during column installation, aiming to reduce the construction cost and disposal of excavated materials. However, lateral and vertical soil movement induced by the installation process may pose potential risks to the adjacent previously installed columns. Only a handful of studies have been attempted in quantifying such effects. This paper presents the results of a numerical investigation on the effects of CMC installation sequence on the already installed columns using the three-dimensional finite difference software package FLAC3D. The results indicate that the installation sequence should be taken into account in the design process to minimise any adverse effects of installing new CMCs on the existing columns.	en_US
dc.relation.ispartof	ICSMGE 2017 - 19th International Conference on Soil Mechanics and Geotechnical Engineering	en_US
dc.title	Effects of installing controlled modulus columns on previously installed columns	en_US
dc.type	Conference Proceeding
utslib.citation.volume	2017-September	en_US
utslib.for	0907 Environmental Engineering	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/Provost
pubs.organisational-group	/University of Technology Sydney/Provost/Jumbunna
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	2017-September	en_US

Abstract:

© 2018 19th ICSMGE Secretariat. All rights reserved. Controlled modulus columns (CMC) ground improvement technique is an attractive geotechnical solution for modification of soft soils. This technique uses a displacement auger during column installation, aiming to reduce the construction cost and disposal of excavated materials. However, lateral and vertical soil movement induced by the installation process may pose potential risks to the adjacent previously installed columns. Only a handful of studies have been attempted in quantifying such effects. This paper presents the results of a numerical investigation on the effects of CMC installation sequence on the already installed columns using the three-dimensional finite difference software package FLAC3D. The results indicate that the installation sequence should be taken into account in the design process to minimise any adverse effects of installing new CMCs on the existing columns.

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http://hdl.handle.net/10453/121537