A 2.5D time-frequency domain model for railway induced soil-building vibration due to railway defects

Connolly, David; Galvín, P.; Olivier, Bryan; Romero, A.; Kouroussis, Georges

doi:10.1016/j.soildyn.2019.01.030

Cited by 39 publications

(18 citation statements)

References 56 publications

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“…This work uses the methodology presented in Reference [47] to model the source-propagation subsystem (S(f ), P (f )). Once it is solved for the source-propagation subsystem, it can be used to compute the building vibration A(f ).…”

Section: Methodsmentioning

confidence: 99%

“…5. Soil-structure transfer function is combined with free-field vibration u g [47] to obtain building response u by railway traffic (Equation ( 4)).…”

Section: Methodology Summarymentioning

confidence: 99%

“…The source, propagation and receiver mechanisms were uncoupled. Recently Connolly et al [47] presented a decoupled procedure to analyse soil-building vibrations due to railway irregularities. A 2.5D time-frequency domain model to compute soil vibrations was combined with a 3D FEM procedure to obtain building vibrations induced by railway defects.…”

Section: Introductionmentioning

confidence: 99%

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A transfer function method to predict building vibration and its application to railway defects

López-Mendoza

Connolly

Romero

et al. 2020

Construction and Building Materials

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Section: Methodsmentioning

confidence: 99%

“…5. Soil-structure transfer function is combined with free-field vibration u g [47] to obtain building response u by railway traffic (Equation ( 4)).…”

Section: Methodology Summarymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A transfer function method to predict building vibration and its application to railway defects

López-Mendoza

Connolly

Romero

et al. 2020

Construction and Building Materials

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“…One reason is that the use of a prediction model that directly allows for the non-Hertzian wheel-rail contact and vehicle dynamics and also includes three dimensional calculations of the ground response would be highly computationally expensive [4]. In order to overcome the computational cost of such a complex model there have been a few studies in the literature that use a hybrid approach to predict ground-borne vibration due to impacts [5,6,7], but these focus mainly on singular defects such as joints and wheel flats.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Ground-Borne Vibration Generated at Railway Crossings Using a Hybrid Model

Ntotsios

Kostovasilis

Thompson

et al. 2021

Notes on Numerical Fluid Mechanics and Multidisciplinary Design

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Railway crossings are an important source of localized ground vibration. Models are required for identifying ways to tackle unacceptable levels of vibration from existing as well as future railway lines. Yet, the use of a prediction model that directly allows for the non-Hertzian wheel-rail contact dynamics and also includes three dimensional calculations of the ground response would be computationally expensive. In order to reduce the computational cost without affecting the accuracy of the predictions, a hybrid approach is proposed for the prediction of ground-borne vibration due to impacts at railway crossings. The approach combines the simulation of the vertical wheel-rail contact force in the time domain and the prediction of ground vibration levels in the far field using a linear wavenumber-frequency-domain approach. The proposed hybrid approach is used to investigate the influence of different vehicle speeds, crossing designs and wheel profiles on predicted ground vibration levels in the free field.

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“…Although single simulation were firstly adopted to predict the effect of a running train on the generated ground wave propagation [1,2], recent research suggested to split the problem in order to take into account specific complex phenomena [3]. Theferore, Kouroussis et al designed and validated a two-step model [4,5,6] that furnishes a sufficiently accurate prediction of the vibrations generated on the ground for different types of soil. This model uses a first step to estimate the forces applied on the soil through a fully coupled model of the vehicle, the track and a reduced coupled lumped masses (CLM) model of the soil [7].…”

Section: Introductionmentioning

confidence: 99%

A Vehicle/Track Co-Simulation Model Using Easydyn

Olivier¹,

Verlinden²,

Kouroussis³

2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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In the railway domain, studies have been undertaken on the attenuation of vibrations transmitted to the vehicle in order to improve the comfort of the passengers. However, a slight variation in the stiffness and damping characteristics of the train constitutive parts can considerably change the amount of energy transmitted to the soil in terms of vibrations. To predict those ground-borne vibrations generated by the vehicle moving along the track that could affect or disturb the surrounding environment, a relevant option would be to build a numerical model that simulates the passage of a vehicle on a track by coupling a multibody modeling of the train with a finite element modeling of the soil using co-simulation techniques. However the location where the model has to be split remains uncertain and then the border between the multibody and the finite element parts must be determined. The aim of this paper is to emphasize the possibility to perform co-simulation between two or more subsystems using an in-house C++ library package called EasyDyn. Using its co-simulation capabilities, the recoupling of a vehicle, that can be modeled using the minimal coordinates approach in multibody systems and a track modeled using a finite element representation of the rail and sleepers, will be discussed. 4128 COMPDYN 2019 7 th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering M. Papadrakakis, M. Fragiadakis (eds.

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A 2.5D time-frequency domain model for railway induced soil-building vibration due to railway defects

Abstract: This is a repository copy of A 2.5D time-frequency domain model for railway induced soil-building vibration due to railway defects.

Cited by 39 publications

References 56 publications

A transfer function method to predict building vibration and its application to railway defects

A transfer function method to predict building vibration and its application to railway defects

Prediction of Ground-Borne Vibration Generated at Railway Crossings Using a Hybrid Model

A Vehicle/Track Co-Simulation Model Using Easydyn

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