Train Derailment Process Analysis on Heavy Haul Railway Bridge under Ship Impact

In order to research train derailment law under ship impact, the spatial vibration calculation model of a freight train-track-bridge (FTTB) system is used to establish the vibration model of the FTTB system under ship impact. Meanwhile, the calculation method of a train derailment process under ship...

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Autores principales:	Kai Gong, Linya Liu, Cuiying Yu, Chen Wang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	railway track engineering heavy-haul railway bridge ship impact whole train derailment course wheel-rail contact state derailment alarm device Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/92b217cd7ff346739c26857da4293c7a
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spelling	oai:doaj.org-article:92b217cd7ff346739c26857da4293c7a2021-11-25T19:06:55ZTrain Derailment Process Analysis on Heavy Haul Railway Bridge under Ship Impact10.3390/sym131121222073-8994https://doaj.org/article/92b217cd7ff346739c26857da4293c7a2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-8994/13/11/2122https://doaj.org/toc/2073-8994In order to research train derailment law under ship impact, the spatial vibration calculation model of a freight train-track-bridge (FTTB) system is used to establish the vibration model of the FTTB system under ship impact. Meanwhile, the calculation method of a train derailment process under ship impact is proposed based on the random analysis method of train derailment energy. Further, the train derailment process on a bridge under ship impact is calculated, and the variation law of the FTTB system spatial vibration response under different impact loads and speeds is analyzed. The results show that the ship impact load has a great influence on wheel lift value. When the impact load is greater than 15 MN, the wheel derails more easily. With the increase of impact load, the derailment coefficient, wheel load reduction rate, and lateral relative displacement of bogie and rail, the lateral displacement of the bridge increases significantly, but the limits of them make it difficult to determine whether the wheel has derailed. The lateral relative displacement of the bogie and rail considering the safety factor is calculated at the moment of derailment, which is taken as the early warning threshold of train derailment. The above conclusions can provide a reference for controlling train safety under ship impact.Kai GongLinya LiuCuiying YuChen WangMDPI AGarticlerailway track engineeringheavy-haul railway bridgeship impactwhole train derailment coursewheel-rail contact statederailment alarm deviceMathematicsQA1-939ENSymmetry, Vol 13, Iss 2122, p 2122 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	railway track engineering heavy-haul railway bridge ship impact whole train derailment course wheel-rail contact state derailment alarm device Mathematics QA1-939
spellingShingle	railway track engineering heavy-haul railway bridge ship impact whole train derailment course wheel-rail contact state derailment alarm device Mathematics QA1-939 Kai Gong Linya Liu Cuiying Yu Chen Wang Train Derailment Process Analysis on Heavy Haul Railway Bridge under Ship Impact
description	In order to research train derailment law under ship impact, the spatial vibration calculation model of a freight train-track-bridge (FTTB) system is used to establish the vibration model of the FTTB system under ship impact. Meanwhile, the calculation method of a train derailment process under ship impact is proposed based on the random analysis method of train derailment energy. Further, the train derailment process on a bridge under ship impact is calculated, and the variation law of the FTTB system spatial vibration response under different impact loads and speeds is analyzed. The results show that the ship impact load has a great influence on wheel lift value. When the impact load is greater than 15 MN, the wheel derails more easily. With the increase of impact load, the derailment coefficient, wheel load reduction rate, and lateral relative displacement of bogie and rail, the lateral displacement of the bridge increases significantly, but the limits of them make it difficult to determine whether the wheel has derailed. The lateral relative displacement of the bogie and rail considering the safety factor is calculated at the moment of derailment, which is taken as the early warning threshold of train derailment. The above conclusions can provide a reference for controlling train safety under ship impact.
format	article
author	Kai Gong Linya Liu Cuiying Yu Chen Wang
author_facet	Kai Gong Linya Liu Cuiying Yu Chen Wang
author_sort	Kai Gong
title	Train Derailment Process Analysis on Heavy Haul Railway Bridge under Ship Impact
title_short	Train Derailment Process Analysis on Heavy Haul Railway Bridge under Ship Impact
title_full	Train Derailment Process Analysis on Heavy Haul Railway Bridge under Ship Impact
title_fullStr	Train Derailment Process Analysis on Heavy Haul Railway Bridge under Ship Impact
title_full_unstemmed	Train Derailment Process Analysis on Heavy Haul Railway Bridge under Ship Impact
title_sort	train derailment process analysis on heavy haul railway bridge under ship impact
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/92b217cd7ff346739c26857da4293c7a
work_keys_str_mv	AT kaigong trainderailmentprocessanalysisonheavyhaulrailwaybridgeundershipimpact AT linyaliu trainderailmentprocessanalysisonheavyhaulrailwaybridgeundershipimpact AT cuiyingyu trainderailmentprocessanalysisonheavyhaulrailwaybridgeundershipimpact AT chenwang trainderailmentprocessanalysisonheavyhaulrailwaybridgeundershipimpact
_version_	1718410291620872192

Train Derailment Process Analysis on Heavy Haul Railway Bridge under Ship Impact

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