An analytical model for train-induced ground vibrations from railways

Karlström, Anders; Boström, Anders E

doi:10.1016/j.jsv.2005.07.041

Cited by 84 publications

(37 citation statements)

References 13 publications

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“…Kargarnovin et al [3] and Kargarnovin and Younesian [4] investigated the response of a Timoshenko beam on Pasternak visco-elastic halfspace and nonlinear visco-elastic half-space, respectively. Sheng et al [5], Takemiya and Bian [6], Picoux et al [7], Karlstrom and Bostrom [8] and Lu et al [9] investigated the dynamic response of a track system on layered elastic half-space with different track models, respectively. Cai et al [10] studied the three-dimensional dynamic responses of tracks on poroelastic soil medium, and the influence of the rail's rigidity was also discussed.…”

Section: H Sun Y Cai and C Xumentioning

confidence: 99%

Three‐dimensional steady‐state response of a railway system on layered half‐space soil medium subjected to a moving train

Sun

Cai

2008

Num Anal Meth Geomechanics

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SUMMARYThe paper presents a three-dimensional study on the steady-state response of a track system and layered half-space soil medium subjected to the load induced by the passages of a moving train with the substructure method. Practically, due to the ground water table being several meters beneath the ground surface, the soil profile can be divided into two layers: the upper layer modeled by an elastic medium and the lower layer by a fully saturated poroelastic medium governed by Biot's theory. In the meanwhile, the rails are regarded as an infinitely long Euler beam, and the sleepers are represented by a continuous mass. The effect of the ballast is accounted for by introducing the Cosserat model for granular medium, and the train is described by a series of moving axle point loads, depending on the geometry of the train. The influences of the thickness, the mass and the rigidity of the elastic layer and the mass of the ballast on rail's displacement responses are carefully investigated. Numerical results show that the influences of these parameters are significant for high train velocity, while vanishes for low velocity.

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Section: H Sun Y Cai and C Xumentioning

confidence: 99%

Three‐dimensional steady‐state response of a railway system on layered half‐space soil medium subjected to a moving train

Sun

Cai

2008

Num Anal Meth Geomechanics

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“…Although this considerably reduces computational times, the invariant track assumption makes it challenging to model discrete components (e.g. sleepers), thus leading to the incorporation of Floquet transforms ( [21,22]), or non-isotropic material properties ( [12,23])…”

Section: Introductionmentioning

confidence: 99%

Large scale international testing of railway ground vibrations across Europe

Connolly

Costa

Kouroussis

et al. 2015

Soil Dynamics and Earthquake Engineering

123

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a b s t r a c tThis paper provides new insights into the characteristics and uncertainties in railway ground-borne vibration prediction. It analyses over 1500 ground-borne vibration records, at 17 high speed rail sites, across 7 European countries. Error quantification tests reveal that existing scoping models, for at-grade tracks, are subject to a mean error of approximately 74.5 VdB. Furthermore, it is found that seemingly identical train passages are subject to a standard deviation of 72 VdB, thus providing an indicator of the minimum error potentially achievable in detailed prediction studies. Existing vibration attenuation relationships are also benchmarked and potential new relationships proposed. Furthermore, it is found that soil material properties are the most influential parameter that effect vibration levels while the effect of train speed is low. In addition, sites with train speeds close to the 'critical velocity' are examined and it is found that their vibration characteristics differ vastly from non-critical velocity sites.The study presents one of the most comprehensive publications of experimental ground-borne railway vibration data and comprises of datasets from Belgium, France, Spain, Portugal, Sweden, England and Italy. First, several international metrics are used to analyse the data statistically. Then the effect of train speed is investigated, with train speeds ranging from 72 to 314 km/h being considered. Next the effect of train type is analysed, with correlations presented for TGV, Eurostar, Thalys, Pendolino, InterCity, X2000, Alfa Pendular, AVE-S100 and Altaria trains. Then, vibration frequency spectrums are considered and critical speed effects analysed. Finally, an investigation into the typical standard deviation encountered in vibration prediction is undertaken.

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“…Using the boundary element method, Andersen [6] studied the steady-state wave propagation through an elastic medium due to a source load moving at a constant velocity. Karlström [7] developed a semi-analytical model to study train-induced ground vibrations. Generally, it is needed to impose some assumptions on the geometry and material of the problem considered to get the analytical or semi-analytical solutions for the moving load-induced ground vibrations.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of high-speed train induced ground vibrations using 2.5D finite element approach

Bian

Chen

2008

Sci. China Ser. G-Phys. Mech. Astron.

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An efficient 2.5D finite element numerical modeling approach was developed to simulate wave motions generated in ground by high-speed train passages. Fourier transform with respect to the coordinate in the track direction was applied to reducing the three-dimensional dynamic problem to a plane strain problem which has been solved in a section perpendicular to the track direction. In this study, the track structure and supporting ballast layer were simplified as a composite Euler beam resting on the ground surface, while the ground with complicated geometry and physical properties was modeled by 2.5D quadrilateral elements. Wave dissipation into the far field was dealt with the transmitting boundary constructed with frequency-dependent dashpots. Three-dimensional responses of track structure and ground were obtained from the wavenumber expansion in the track direction. The simulated wave motions in ground were interpreted for train moving loads traveling at speeds below or above the critical velocity of a specific track-ground system. It is found that, in the soft ground area, the high-speed train operations can enter the transonic range, which can lead to resonances of the track structure and the supporting ground. The strong vibration will endanger the safe operations of high-speed train and accelerate the deterioration of railway structure.high-speed train, moving load, ground vibration, 2.5D finite element, absorbing boundary

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An analytical model for train-induced ground vibrations from railways

Cited by 84 publications

References 13 publications

Three‐dimensional steady‐state response of a railway system on layered half‐space soil medium subjected to a moving train

Three‐dimensional steady‐state response of a railway system on layered half‐space soil medium subjected to a moving train

Large scale international testing of railway ground vibrations across Europe

Numerical simulation of high-speed train induced ground vibrations using 2.5D finite element approach

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