Reinforced Timoshenko Beam Theory to Simulate Load Transfer Mechanism in CMC Supported Embankments

Ghosh, B; Fatahi, B; Khabbaz, H; Hsi, J

Reinforced Timoshenko Beam Theory to Simulate Load Transfer Mechanism in CMC Supported Embankments

Ghosh, B Fatahi, B

Khabbaz, H

Hsi, J

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Publisher:: Australian Geomechanics Society
Publication Type:: Conference Proceeding
Citation:: Proceedings of 12th Australia New Zealand Conference on Geomechanics, 2016, 1 pp. 1099 - 1106
Issue Date:: 2016-02-22

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Field	Value	Language
dc.contributor.author	Ghosh, B	en_US
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	Hsi, J	en_US
dc.date	2015-02-22	en_US
dc.date.issued	2016-02-22	en_US
dc.identifier.citation	Proceedings of 12th Australia New Zealand Conference on Geomechanics, 2016, 1 pp. 1099 - 1106	en_US
dc.identifier.uri	http://hdl.handle.net/10453/41638
dc.description.abstract	Controlled modulus column (CMC) supported embankments are increasingly being used for construction of major highway embankments on soft ground particularly near waterways or coastal regions. CMCs are sustainable and cost-effective ground improvement technology that transmit the load from the traffic and the embankment to a lower bearing stratum through a composite CMC/soil matrix. The key influencing components of the load transfer mechanism include embankment fill, load transfer platform (LTP) with one or more layers of geosynthetics, CMC and the foundation soils. Rapid growth of the application of geosynthetics between two granular layers in the column supported embankment has been observed in the last two decades. The use of LTP enhances the load transfer mechanism in the CMC improved soft ground and minimises the post construction settlement of the ground. In this paper, reinforced Timoshenko beam theory is adopted to simulate the LTP with one layer of geosynthetics that is resting on elastic foundation with columns. A parametric study is conducted to investigate the importance of the LTP on the load transfer mechanism for the CMC supported embankment. Special attentions are given to the thickness of the LTP, the use of geosynthetics and its influence on deflection of the LTP, the shear force developed in the LTP and the tension developed in geosynthetics. The parametric study reveals that the thickness of the LTP has a significant effect on the behaviour of LTP up to a certain limit.	en_US
dc.publisher	Australian Geomechanics Society	en_US
dc.relation.ispartof	Proceedings of 12th Australia New Zealand Conference on Geomechanics	en_US
dc.relation.ispartof	Australia New Zealand Geomechanics conference	en_US
dc.title	Reinforced Timoshenko Beam Theory to Simulate Load Transfer Mechanism in CMC Supported Embankments	en_US
dc.type	Conference Proceeding
utslib.citation.volume	1	en_US
utslib.location	Wellington, New Zealand	en_US
utslib.location.activity	Wellington, New Zealand	en_US
utslib.for	0905 Civil 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/Strength - CBI - Centre for Built Infrastructure
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	closed_access
pubs.consider-herdc	true	en_US
pubs.finish-date	2015-02-25	en_US
pubs.place-of-publication	Wellington, New Zealand	en_US
pubs.publication-status	Published	en_US
pubs.start-date	2015-02-22	en_US
pubs.volume	1	en_US

Abstract:

Controlled modulus column (CMC) supported embankments are increasingly being used for construction of major highway embankments on soft ground particularly near waterways or coastal regions. CMCs are sustainable and cost-effective ground improvement technology that transmit the load from the traffic and the embankment to a lower bearing stratum through a composite CMC/soil matrix. The key influencing components of the load transfer mechanism include embankment fill, load transfer platform (LTP) with one or more layers of geosynthetics, CMC and the foundation soils. Rapid growth of the application of geosynthetics between two granular layers in the column supported embankment has been observed in the last two decades. The use of LTP enhances the load transfer mechanism in the CMC improved soft ground and minimises the post construction settlement of the ground. In this paper, reinforced Timoshenko beam theory is adopted to simulate the LTP with one layer of geosynthetics that is resting on elastic foundation with columns. A parametric study is conducted to investigate the importance of the LTP on the load transfer mechanism for the CMC supported embankment. Special attentions are given to the thickness of the LTP, the use of geosynthetics and its influence on deflection of the LTP, the shear force developed in the LTP and the tension developed in geosynthetics. The parametric study reveals that the thickness of the LTP has a significant effect on the behaviour of LTP up to a certain limit.

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http://hdl.handle.net/10453/41638