Experimentally investigating finite element accuracy for ground vibrations induced by high-speed trains

Ju, Shen-Haw; Lin, Hung Ta

doi:10.1016/j.engstruct.2007.05.019

Cited by 50 publications

(21 citation statements)

References 19 publications

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“…However, the torsional vibration and its possible coupling with vertical vibration of the bridge girder are not considered herein since the focus of the present study is dynamic responses of different types of railway tracks. e above simplifications, i.e., modeling rail, slab, and girder as single beams, are commonly found in the literature [20][21][22] in the study of structural and environmental vibrations. e train vehicle consists of car bodies, bogies, wheels, and suspension systems connecting them.…”

Section: Model Descriptionsmentioning

confidence: 99%

“…e train vehicle consists of car bodies, bogies, wheels, and suspension systems connecting them. Discrete rigid multibody system of different degrees of freedom (DOFs) has been taken for the modeling of train in the literature [20,23]. However, in the present study, the train is modeled as moving sprung wheel mass (as shown in Figure 3), i.e., the car body, the bogie, and the suspension system are not included.…”

Section: Model Descriptionsmentioning

confidence: 99%

“…Actually, as being concluded by them, the elastic effects of track are not always taken into account in bridge dynamic modeling. Especially, in viewing of modeling environmental vibrations induced by trains moving on elevated tracks, existing studies generally adopt over-simplified track models by either neglecting the elastic track components (e.g., the rail is connected to the bridge deck directly [20]) or by integrating the elastic properties of the track directly into the bridge [21].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Comparative Study on Vertical Dynamic Responses of Three Types of Elevated Railway Tracks Subjected to a Moving Train

Shi

Zhang

et al. 2019

Mathematical Problems in Engineering

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A theoretical model incorporating the moving train, the railway track, and the elevated viaduct is established and then solved using periodic theory in this paper. The vertical wheel/rail forces and the dynamic responses of track and viaduct girder are obtained and compared for three different types of tracks, i.e., the double-block ballastless track, the rubber-pad floating slab track, and the steel-spring floating slab track. It is observed that the rubber-pad and steel-spring floating slab tracks can reduce more than 10% of the wheel/rail force and the reaction force at girder supports, when compared to those of the double-block ballastless track. Especially, the steel-spring floating slab track develops an uplifting force larger than the installation force of the fastening clip, which may cause failure of the rail fastening system.

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Section: Model Descriptionsmentioning

confidence: 99%

Section: Model Descriptionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Comparative Study on Vertical Dynamic Responses of Three Types of Elevated Railway Tracks Subjected to a Moving Train

Shi

Zhang

et al. 2019

Mathematical Problems in Engineering

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“…In this regard, Yang and Hung (2008) studied wave propagation for train-induced vibrations. Then, the works by Hall (2003), Park et al (2004), Andersen and Jones (2006), Ju (2007) and Ju and Lin (2008) could be pointed out. Also, other studies in the field of train-induced ground vibrations have been carried out by Degen et al (2006), Karlström and Boström (2006), Takemiya and Bian (2007) and Salvador et al (2011).…”

Section: Introductionmentioning

confidence: 99%

Effect of sand-fouled ballast on train-induced vibration

Esmaeili

Zakeri

Mosayebi

2013

International Journal of Pavement Engineering

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One of the most important issues in desert areas is ballast layer solidification due to windy sand accumulation. This phenomenon increases track modulus which leads to serious damage in railway track components. On the other hand, one of the side effects of this problem is the increase in ground-borne vibration during train passing. Therefore, this research is devoted to the investigating effect of sand-fouled ballast on train-induced vibration by means of experimental and numerical methods. For this purpose, five sections of ballasted railway track in central desert of Iran were monitored for 6 months, and many field measurements were conducted for obtaining track stiffness and ballast fouling percentage. Then, the field measured track stiffness values were implemented in finite element model, and the environmental vibrations due to train passing were assessed in the form of acceleration and displacement time histories for adjacent points of the railway track. The results indicated that, due to the increase in ballast fouling percentage from 0 to 62.7%, maximum acceleration increased by approximately 43% and maximum displacement decreased by approximately 68%.

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“…In particular, FBG-based optical sensors are attractive for many applications due to characteristics, such as superior reliability, compact size, immunity to electromagnetic interference (EMI), and low-cost integration [7]- [24]. Therefore, FBG sensors are considered as one of promising techniques that can be used in high-speed railway systems from different perspectives [25]- [28]. For high-speed railway applications, the FBG sensor can be used for strain measurements of different structures, positioning through axle-counting, and temperature monitoring of key components of the high-speed train body itself, etc.…”

Section: Introductionmentioning

confidence: 99%

Fiber Sensors for Strain Measurements and Axle Counting in High-Speed Railway Applications

et al. 2011

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High-speed railway systems have begun to be widely deployed. To meet increasingly stringent requirements under harsh running environments, we propose and demonstrate three fiber-Bragg-grating (FBG)-based approaches for the strain measurement and axle counting in high-speed railway systems, including matched gratings, grating under uneven strain distribution, and semi-free grating. All approaches are laboratory verified and evaluated using the train load platform. Pros and cons are also discussed in terms of feasibility and cost-effectiveness.

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Experimentally investigating finite element accuracy for ground vibrations induced by high-speed trains

Cited by 50 publications

References 19 publications

A Comparative Study on Vertical Dynamic Responses of Three Types of Elevated Railway Tracks Subjected to a Moving Train

A Comparative Study on Vertical Dynamic Responses of Three Types of Elevated Railway Tracks Subjected to a Moving Train

Effect of sand-fouled ballast on train-induced vibration

Fiber Sensors for Strain Measurements and Axle Counting in High-Speed Railway Applications

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