Ballasted Track Status Evaluation Based on Apparent Track Stiffness Index
Source abstract
Abstract
Currently, maintenance work for ballasted track is performed based on the Track Quality Index (TQI) without a fundamental cause investigation for track irregularity. In this study, a new evaluation standard for ballasted track status is proposed to overcome the limitations of current maintenance work. The new evaluation standard is based on the stiffness index. The stiffness index is defined as the difference between the average and standard deviation of the apparent track stiffness determined by a light falling weight deflectometer (LFWD). After some field tests and analysis, it is shown that the stiffness index has a strong correlation not only with TQI but also with maintenance history. In verification results, the new evaluation standard estimated the ballasted track status quite well.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Railway Engineering and Dynamics · Civil and Geotechnical Engineering Research · Asphalt Pavement Performance Evaluation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Korea Railroad Research Institute (KRRI), 176, Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do 16105, Korea
Funding
Ministry of Science and Information and Communications Technologies
References (15)
Show source-provided references
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