Research on Mechanical Performance of Improved Low Vibration Track and Its Feasibility Analysis for Heavy-Haul Railway Applications

With the gradual increase of the cargo weight of heavy-haul trains, the traditional ballasted track with the accumulation of stone and ballast has been unable to meet its structural safety requirements. From the comparison of the three common ballastless tracks in China, it can be seen that the low-...

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Autores principales:	Zhiping Zeng, Guangzhao Peng, Wuji Guo, Xiangdong Huang, Weidong Wang, Ji Hu, Shiye Li, Abdulmumin Ahmed Shuaibu, Yu Yuan, Xianggang Du
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	heavy-haul railway low-vibration track (LVT) improvement research full-scale model finite element method Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/98eb058fc0d944f4bfa66499b830db81
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spelling	oai:doaj.org-article:98eb058fc0d944f4bfa66499b830db812021-11-11T15:16:41ZResearch on Mechanical Performance of Improved Low Vibration Track and Its Feasibility Analysis for Heavy-Haul Railway Applications10.3390/app1121102322076-3417https://doaj.org/article/98eb058fc0d944f4bfa66499b830db812021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10232https://doaj.org/toc/2076-3417With the gradual increase of the cargo weight of heavy-haul trains, the traditional ballasted track with the accumulation of stone and ballast has been unable to meet its structural safety requirements. From the comparison of the three common ballastless tracks in China, it can be seen that the low-vibration track (LVT) has the advantages of reasonable structure, low cost, and easy maintenance. Therefore, the design and research of heavy-haul railways are focused on, and it is urgent to study the applicability of LVT in heavy-haul railways. <b>Method:</b> By improving the slope of the short side of the LVT support block, the support block has a better load bearing capacity, so as to achieve the purpose of bearing a larger axle load. Through 1:1 full-scale model test and finite element simulation, the static mechanical properties of Improved LVT (ILVT) and Traditional LVT (TLVT) are compared and analyzed. <b>Result:</b> Compared with TLVT, ILVT has smaller vertical displacement and track gauge changes when subjected to the same load. The proven and reliable finite element model also shows that ILVT’s load sharing is less affected. In the case of achieving the same deformation, ILVT can withstand greater vertical and lateral loads. <b>Conclusions:</b> Compared with the TLVT, the ILVT design can reduce the vertical displacement of the rail and the supporting block, better control the track subsidence, and improve the driving safety of the LVT. At the same time, ILVT improves the anti-overturning ability of the rail and support block under lateral load, reduces the expansion of the gauge and the lateral spacing of the support block, and improves the stability of the track structure. ILVT can also be considered for the weight of 40t and other large axle load, and has broad application prospects.Zhiping ZengGuangzhao PengWuji GuoXiangdong HuangWeidong WangJi HuShiye LiAbdulmumin Ahmed ShuaibuYu YuanXianggang DuMDPI AGarticleheavy-haul railwaylow-vibration track (LVT)improvement researchfull-scale modelfinite element methodTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10232, p 10232 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heavy-haul railway low-vibration track (LVT) improvement research full-scale model finite element method Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	heavy-haul railway low-vibration track (LVT) improvement research full-scale model finite element method Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Zhiping Zeng Guangzhao Peng Wuji Guo Xiangdong Huang Weidong Wang Ji Hu Shiye Li Abdulmumin Ahmed Shuaibu Yu Yuan Xianggang Du Research on Mechanical Performance of Improved Low Vibration Track and Its Feasibility Analysis for Heavy-Haul Railway Applications
description	With the gradual increase of the cargo weight of heavy-haul trains, the traditional ballasted track with the accumulation of stone and ballast has been unable to meet its structural safety requirements. From the comparison of the three common ballastless tracks in China, it can be seen that the low-vibration track (LVT) has the advantages of reasonable structure, low cost, and easy maintenance. Therefore, the design and research of heavy-haul railways are focused on, and it is urgent to study the applicability of LVT in heavy-haul railways. <b>Method:</b> By improving the slope of the short side of the LVT support block, the support block has a better load bearing capacity, so as to achieve the purpose of bearing a larger axle load. Through 1:1 full-scale model test and finite element simulation, the static mechanical properties of Improved LVT (ILVT) and Traditional LVT (TLVT) are compared and analyzed. <b>Result:</b> Compared with TLVT, ILVT has smaller vertical displacement and track gauge changes when subjected to the same load. The proven and reliable finite element model also shows that ILVT’s load sharing is less affected. In the case of achieving the same deformation, ILVT can withstand greater vertical and lateral loads. <b>Conclusions:</b> Compared with the TLVT, the ILVT design can reduce the vertical displacement of the rail and the supporting block, better control the track subsidence, and improve the driving safety of the LVT. At the same time, ILVT improves the anti-overturning ability of the rail and support block under lateral load, reduces the expansion of the gauge and the lateral spacing of the support block, and improves the stability of the track structure. ILVT can also be considered for the weight of 40t and other large axle load, and has broad application prospects.
format	article
author	Zhiping Zeng Guangzhao Peng Wuji Guo Xiangdong Huang Weidong Wang Ji Hu Shiye Li Abdulmumin Ahmed Shuaibu Yu Yuan Xianggang Du
author_facet	Zhiping Zeng Guangzhao Peng Wuji Guo Xiangdong Huang Weidong Wang Ji Hu Shiye Li Abdulmumin Ahmed Shuaibu Yu Yuan Xianggang Du
author_sort	Zhiping Zeng
title	Research on Mechanical Performance of Improved Low Vibration Track and Its Feasibility Analysis for Heavy-Haul Railway Applications
title_short	Research on Mechanical Performance of Improved Low Vibration Track and Its Feasibility Analysis for Heavy-Haul Railway Applications
title_full	Research on Mechanical Performance of Improved Low Vibration Track and Its Feasibility Analysis for Heavy-Haul Railway Applications
title_fullStr	Research on Mechanical Performance of Improved Low Vibration Track and Its Feasibility Analysis for Heavy-Haul Railway Applications
title_full_unstemmed	Research on Mechanical Performance of Improved Low Vibration Track and Its Feasibility Analysis for Heavy-Haul Railway Applications
title_sort	research on mechanical performance of improved low vibration track and its feasibility analysis for heavy-haul railway applications
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/98eb058fc0d944f4bfa66499b830db81
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Research on Mechanical Performance of Improved Low Vibration Track and Its Feasibility Analysis for Heavy-Haul Railway Applications

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