INFLUENCE OF BALLAST DENSITY ON TRACK DEFORMATION
To evaluate the deformation of the track under certain traffic conditions, the traditional design methods assume generally a homogenous support of the sleeper on the transversal profile. However, the granular nature of the ballast and its compaction process lead to important heterogeneities beneath the sleeper. This paper has focused on the ballast density variations on the transversal profile, showing the important role that those heterogeneities can have on the ballast settlement due to particle lateral flow. Thus, improving the transversal homogeneity of the ballast layer could be a positive issue to reduce the track deformation process. Furthermore, a suggestion is made regarding the confining pressure used on triaxal tests of the ballast, since the ballast heterogeneities suppose a substantial reduction on the magnitudes generally considered. For the covering abstract see ITRD E122683.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0947644490
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Corporate Authors:
ENGINEERING TECHNICS PRESS
46 CLUNY GARDENS
EDINBURGH, United Kingdom EH10 6BN -
Authors:
- LOPEZ PITA, E A
- TEIXEIRA, P F
- Publication Date: 2002
Language
- English
Media Info
- Features: References;
- Pagination: 7 p.
- Monograph Title: THE MOVEMENT MONITORING OF A RAILWAY LINE - CTRL 440 - A CASE STUDY
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Serial:
- PROCEEDINGS OF THE INTERNATIONAL CONFERENCE RAILWAY ENGINEERING 2002, HELD LONDON, UK, JULY 2002 - CD ROM
- Publisher: ENGINEERING TECHNICS PRESS
Subject/Index Terms
- TRT Terms: Aggregates; Ballast (Railroads); Compaction; Conferences; Deformation; Ground settlement; Railroad tracks
- Uncontrolled Terms: Ballast
- ITRD Terms: 4577: Aggregate; 4559: Coarse aggregate; 3686: Compaction; 8525: Conference; 5595: Deformation; 1062: Railway track; 5792: Settlement
- Subject Areas: Geotechnology; Railroads;
Filing Info
- Accession Number: 00982629
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- ISBN: 0-947644-49-0
- Files: ITRD
- Created Date: Dec 2 2004 12:00AM