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http://dx.doi.org/10.5762/KAIS.2020.21.12.880

A Study on the Running Stability of the High-speed Train by Wind Pressure and Crossing  

Jeon, Chang-Sung (High-speed Railroad Systems Research Team, Korea Railroad Research Institute)
Yun, Su-Hwan (High-speed Railroad Systems Research Team, Korea Railroad Research Institute)
Kim, Seog-Won (High-speed Railroad Systems Research Team, Korea Railroad Research Institute)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.12, 2020 , pp. 880-887 More about this Journal
Abstract
This study was conducted to investigate the running stability of a high-speed train operated in a tunnel and an open field when external forces such as wind pressure and train crossings were applied to the vehicle. With no external force, the running stability at 400 km/h was examined, and the wheel weight reduction ratio, lateral pressure of the axles, and derailment coefficient satisfied the criteria of the technical standards for a high-speed train. When the distance between the centers of the tracks is 4.6 m, the external force caused by train crossing slightly affects the lateral acceleration of the vehicle but does not significantly affect the wheel weight reduction rate, lateral pressure, and derailment coefficient in a tunnel and open filed. When the distance is 4.6~5.0 m, the wheel weight reduction ratio, lateral pressure, and derailment coefficient satisfy the criteria with 20 m/s wind. When the wind speed was 30 m/s, the derailment coefficient satisfied the criteria, and the other variables exceeded them. It is predicted that a high-speed train can be operated safely at 400 km/h with wind speed of up to 20 m/s, and it should be slowed down at a wind speed of 30 m/s.
Keywords
High-speed Train; Running Stability; Technical Standards for High-speed Train; Wind Pressure; Train Crossing;
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