Dynamic Wheel-Rail Force-Based Track-Irregularity Evaluation for Ballasted Track on Serviced Railway by Adjacent Excavation
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Published:2021-12-31
Issue:1
Volume:12
Page:375
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ISSN:2076-3417
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Container-title:Applied Sciences
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language:en
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Short-container-title:Applied Sciences
Author:
Choi Jung-Youl,Park Dong-Ryong,Chung Jee-Seung,Kim Sun-Hee
Abstract
This study investigates a load-based, track-irregularity-analysis technique for ballasted tracks on a serviced railway line with respect to excavation work conducted in adjacent sites. A numerical analysis and field measurements (railbed-settlement-monitoring sensor, track-geometry-measurement system, wheel-load measurements) were analyzed comparatively to demonstrate the correlation between the track irregularities and the Wheel-Rail interaction force. In this way, we highlight the necessity for load-based track-irregularity-management methods. The analyzed results show that the maximum dynamic wheel load was measured in the range of approximately 10 m before and after the location where the maximum track irregularities occurred, and that even if the maintenance criteria of track irregularities were satisfied, the design dynamic wheel load could still be exceeded depending on the train speed, thus indicating that track damage can be caused by the impact load.
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference18 articles.
1. Evaluation of Track Irregularity Effect due to Adjacent Excavation on Serviced Railway Line;Chung;J. Converg. Cult. Technol.,2019
2. Analysis of Ground Subsidence according to Tunnel Passage in Geological Vulnerable Zone;Choi;J. Converg. Cult. Technol.,2020