Determination of The Allowance Tolerance of Track Quality Index for Khon Kaen Track Maintenance Division of State Railway of Thailand
Keywords:
Track, Allowance tolerance, Track improvementAbstract
This article performs the study the determination of the acceptable tolerances that are suitable for the calculation of the index of the rail condition before improvement and the condition after improvement. The area for study comprehends the Khon Kaen maintenance division of state railway of Thailand. The tolerance value in the pre-improved condition is set to 3.00 mm and the tolerance value in the improved rail condition is set to 2.50, 2.00, 1.50 and 1.00 mm. A total of 6 variables, left longitudinal, right longitudinal, left rail, right rail, transverse level and twisted were used to determine the appropriate tolerances. The results of the study found that the suitable tolerance rating was 2.00 mm, which made the index of the condition suitable for use. Resulting in road conditions can be used for a longer period and maintenance costs can be reduced in the long term.
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