USE OF TRACK GEOMETRY MEASUREMENTS FOR MAINTENANCE PLANNING
Track geometry measurements are discussed as a means of evaluating the functional condition of track. Examples are given of track vertical profile geometry data from a heavy haul line obtained by a laser survey and by a track recording car. Bad sites with rapid geometry deterioration are compared with good sites with stable geometry. The mid-chord ordinate measurement procedure used by the recording car is described, and two methods to backcalculate the track longitudinal profile from this measurement are presented. A definition of track roughness based on the vertical geometry data is proposed. Examples are given of the use of roughness to identify track sections having similar maintenance needs and to project the amount of traffic when geometry corrections will be required. The results of the research suggest that considerable potential for cost savings exists from use of track geometry data in maintenance planning beyond that normally considered by the railroad where the measurements were made.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309061016
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1470, Railroad Research Issues. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Ebersohn, Willem
- Selig, Ernest T
- Publication Date: 1994
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 84-92
- Monograph Title: Railroad research issues
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Serial:
- Transportation Research Record
- Issue Number: 1470
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Backcalculation; Cost control; Maintenance; Maintenance management; Maintenance practices; Measurement; Needs assessment; Planning; Railroad tracks; Roughness
- Uncontrolled Terms: Cost savings; Longitudinal profile; Vertical profile
- Old TRIS Terms: Track geometry measurement
- Subject Areas: Data and Information Technology; Highways; Maintenance and Preservation; Planning and Forecasting; Railroads;
Filing Info
- Accession Number: 00677730
- Record Type: Publication
- ISBN: 0309061016
- Files: TRIS, TRB, ATRI
- Created Date: May 22 1995 12:00AM