Use of geosynthetics in railways including geocomposites and vertical drains

Indraratna, B; Rujikiatkamjorn, C; Nimbalkar, S

Use of geosynthetics in railways including geocomposites and vertical drains

Indraratna, B Rujikiatkamjorn, C Nimbalkar, S

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Publication Type:: Conference Proceeding
Citation:: Geotechnical Special Publication, 2011, (211 GSP), pp. 4733 - 4742
Issue Date:: 2011-05-27

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Field	Value	Language
dc.contributor.author	Indraratna, B	en_US
dc.contributor.author	Rujikiatkamjorn, C	en_US
dc.contributor.author	Nimbalkar, S https://orcid.org/0000-0002-1538-3396	en_US
dc.date.issued	2011-05-27	en_US
dc.identifier.citation	Geotechnical Special Publication, 2011, (211 GSP), pp. 4733 - 4742	en_US
dc.identifier.isbn	9780784411650	en_US
dc.identifier.issn	0895-0563	en_US
dc.identifier.uri	http://hdl.handle.net/10453/120615
dc.description.abstract	Australia relies heavily on rail for the transportation of bulk commodities and passenger services, and has introduced faster and heavier trains in recent years due to a growing demand. Large cyclic loading from heavy haul and passenger trains often leads to progressive deterioration of the track. The excessive deformations and degradations of the ballast layer and unacceptable differential settlement or pumping of underlying soft and compressible subgrade soils necessitate frequent costly track maintenance works. A proper understanding of load transfer mechanisms and their effects on track deformations are essential prerequisites for minimising maintenance costs. The reinforcement of the track by means of geosynthetics leads to significant reduction in the downward propagation of stresses and assures more resilient long-term performance. The geocomposite serves the functions of reinforcement, drainage and separation, thereby reducing the vertical and lateral deformations. Stabilization of soft subgrade soils by using prefabricated vertical drains (PVDs) is also essential for improving the overall stability of track and to reduce the differential settlement during the operation of trains. The effectiveness of using geocomposite geosynthetic and PVDs has been observed through field measurements and finite element analyses. These have been the first fully instrumented, comprehensive field trials carried out in Australian Railways, and it was very encouraging to see the field observations matching the numerical predictions. © ASCE 2011.	en_US
dc.relation.ispartof	Geotechnical Special Publication	en_US
dc.relation.isbasedon	10.1061/41165(397)484	en_US
dc.subject.classification	Geological & Geomatics Engineering	en_US
dc.title	Use of geosynthetics in railways including geocomposites and vertical drains	en_US
dc.type	Conference Proceeding
utslib.citation.volume	211 GSP	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
utslib.copyright.status	closed_access
pubs.issue	211 GSP	en_US
pubs.publication-status	Published	en_US

Abstract:

Australia relies heavily on rail for the transportation of bulk commodities and passenger services, and has introduced faster and heavier trains in recent years due to a growing demand. Large cyclic loading from heavy haul and passenger trains often leads to progressive deterioration of the track. The excessive deformations and degradations of the ballast layer and unacceptable differential settlement or pumping of underlying soft and compressible subgrade soils necessitate frequent costly track maintenance works. A proper understanding of load transfer mechanisms and their effects on track deformations are essential prerequisites for minimising maintenance costs. The reinforcement of the track by means of geosynthetics leads to significant reduction in the downward propagation of stresses and assures more resilient long-term performance. The geocomposite serves the functions of reinforcement, drainage and separation, thereby reducing the vertical and lateral deformations. Stabilization of soft subgrade soils by using prefabricated vertical drains (PVDs) is also essential for improving the overall stability of track and to reduce the differential settlement during the operation of trains. The effectiveness of using geocomposite geosynthetic and PVDs has been observed through field measurements and finite element analyses. These have been the first fully instrumented, comprehensive field trials carried out in Australian Railways, and it was very encouraging to see the field observations matching the numerical predictions. © ASCE 2011.

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http://hdl.handle.net/10453/120615