Study on mechanical behaviours of rail fasteners and effects on seismic performance of urban rail viaduct

Yong, Hu; Wang, Junjie; Le, Weijie; Zhang, Liang; Su, Junsheng

doi:10.1016/j.istruc.2021.06.105

Cited by 12 publications

(2 citation statements)

References 27 publications

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“…In engineering practice, adjusting the track damping can usually be achieved by changing the structure of the fasteners. For example, under-rail pads of different materials can affect the dynamic characteristics of the track [35].…”

Section: Influence Of Lateral Damping and Stiffnessmentioning

confidence: 99%

Study on the Factors Affecting the Wheel–Rail Lateral Impact of the Forepart of the Curved Switch Rail

Liao¹,

Luo²

2022

Machines

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In the switch rail section of a high-speed turnout, the wheel–rail lateral impact of the forepart of the curved switch rail is the most important factor affecting the passing performance. In order to reduce the lateral impact and improve the passing safety, a complete vehicle–track multi-body dynamics model is devised in this paper. The variation of the wheel–rail relationship when the train passes through is analyzed. The lateral force and derailment coefficient are calculated under different parameters, and the wear index is also calculated under some working conditions. The results show that properly reducing the lateral damping of the curved switch rail can effectively reduce the wheel–rail lateral force and derailment coefficient of this section, while keeping the track shape undamaged. The optimization of rail cant design plays an important role in alleviating lateral wheel–rail impact. Decreasing the height reduction of the switch rail is helpful to optimize the lateral force of the forepart of the curved switch rail. The selection of a suitable cutting mode for switch blade and reasonable control of the wheel–rail impact angle as well as passing speed have positive effects on controlling the lateral wheel–rail impact of the forepart of the curved switch rail.

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Section: Influence Of Lateral Damping and Stiffnessmentioning

confidence: 99%

Study on the Factors Affecting the Wheel–Rail Lateral Impact of the Forepart of the Curved Switch Rail

Liao¹,

Luo²

2022

Machines

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“…The noise generated during the operation of railway transport has a negative impact on human health [8][9][10][11][12][13][14]. To solve this problem, rubber gaskets for rail fastenings are used [15][16][17][18][19]. These gaskets are made using directional functional ingredients to improve the vibration-damping (noiseabsorbing) properties of the rubber.…”

Section: Introductionmentioning

confidence: 99%

Effect of Polynorbornene on Physico-Mechanical, Dynamic, and Dielectric Properties of Vulcanizates Based on Isoprene, α-Methylstyrene-Butadiene, and Nitrile-Butadiene Rubbers for Rail Fasteners Pads

Egorov,

Salomatina,

Vassilyev

et al. 2023

J. Compos. Sci.

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The article studies the effect of polynorbornene (PNB) in the composition of PNB with Norman 747 LV plasticizer (RC) on the curing characteristics of the rubber compound and the physico-mechanical, dynamic, dielectric properties and the thermal behavior of vulcanizates based on a combination of isoprene, α-methylstyrene-butadiene, and nitrile-butadiene rubbers. It is shown that vulcanizates containing PNB in the composition of the RC had lower conditional tensile strength, hardness, and tear resistance compared to the vulcanizate of the base version of the rubber compound. Studies of dynamic mechanical analysis indicate that an increase in the content of RC, and hence PNB, in the rubber compound contributes to an increase in the mechanical loss factor (tanδ) and a decrease in the storage modulus of vulcanizates. It was found that vulcanized rubber, containing 24.0 parts per hundred of rubber (phr) (8.98 wt. %) PNB as part of the RC, is characterized by stable physico-mechanical, improved vibration-absorbing properties, as well as increased dielectric parameters. This rubber compound can be used as a base for rail fasteners for railroad tracks.

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Turn Contact Device for Low-Maintenance Rail Fastening

Velichko

Karyuckin

2022

Lecture Notes in Networks and Systems

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Study on mechanical behaviours of rail fasteners and effects on seismic performance of urban rail viaduct

Cited by 12 publications

References 27 publications

Study on the Factors Affecting the Wheel–Rail Lateral Impact of the Forepart of the Curved Switch Rail

Study on the Factors Affecting the Wheel–Rail Lateral Impact of the Forepart of the Curved Switch Rail

Effect of Polynorbornene on Physico-Mechanical, Dynamic, and Dielectric Properties of Vulcanizates Based on Isoprene, α-Methylstyrene-Butadiene, and Nitrile-Butadiene Rubbers for Rail Fasteners Pads

Turn Contact Device for Low-Maintenance Rail Fastening

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