&lt;b&gt;A Numerical Simulation Method for Ground and Building Vibration Based on Three Dimensional Dynamic Analysis&lt;/b&gt;

Yokoyama, Hidefumi; Izumi, Yasuhiko; Watanabe, Tsutomu

doi:10.2219/rtriqr.57.2_151

Cited by 8 publications

(9 citation statements)

References 7 publications

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“…two methods were adopted and then combined: a coupled vibration analysis model of a running train, track and structures, and a 3-dimensional vibration analysis model of the structures, ground and wayside buildings (Fig. 6) [10]. Comparison of simulation results and actual measurement values, showed that they coincided with each other in terms of structures, ground and wayside buildings.…”

Section: Ground Vibrationsmentioning

confidence: 90%

Recent Studies on Wayside Environmental Problems

Nagakura¹

2017

QR of RTRI

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Section: Ground Vibrationsmentioning

confidence: 90%

Recent Studies on Wayside Environmental Problems

Nagakura¹

2017

QR of RTRI

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“…The numerical simulation proposed by RTRI [2] was conducted using a combination of a coupled vibration analysis model of running trains, tracks and supporting structures and a three-dimensional vibration analysis model of supporting structures and the ground (Fig.1). The computation was performed in the following sequence: (1) Performance of a coupled vibration analysis of the trains, the tracks and the structures for computing the moving excitation forces generated by the running trains.…”

Section: Numerical Simulation Of Train-induced Vibrationmentioning

confidence: 99%

“…The numerical simulation proposed by RTRI [2] was conducted using a combination of a coupled vibration analysis model of running trains, tracks and supporting structures and a Two analysis models interlinked via the transfer of excitation force structures, the ground and buildings for computing the vibrations of the wayside ground and buildings. In this paper, the vibration analysis for calculating the moving excitation forces was conducted using DALIA (KOZO KEIKAKU ENGINEERING Inc. (KKE)), and the three-dimensional vibration analysis for calculating the train-induced ground vibrations was conducted using SuperFLUSH/3DS (KKE).…”

Section: Numerical Simulation Of Train-induced Vibrationmentioning

confidence: 99%

“…Clarifying trends in excitation force responses, using numerical simulation in which moving trains, tracks, supporting structures and the ground are factored in, would greatly improve the understanding of train-induced vibration phenomena and help develop countermeasures against ground vibration. This paper evaluated the influence of excitation force types on ground responses using the numerical simulation method proposed by RTRI [2] in which moving trains, tracks, supporting structures and the ground are factored.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Train-induced Vibration in Consideration of Types of Excitation Forces

Noyori¹,

Yokoyama²

2019

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Vibrations caused by running trains sometimes lead to environmental issues. Traininduced vibrations are caused by moving static and dynamic axle loads. In numerical simulations of train-induced vibration, the type of excitation force greatly affects the relevant structure and ground responses. This study evaluated the influence of excitation force types on ground responses. Numerical simulations demonstrated that at frequencies below or equal to 31.5 Hz, a large part of the ground vibration caused by moving excitation forces consists of averaged components such as moving static axle loads. On the other hand, the simulations also showed that at frequencies equal to or over 40 Hz, a large part of the ground vibration due to moving excitation forces consists of varying components such as dynamic axle loads. Furthermore, it was found that there is a frequency at which the moving excitation force accelerance nears the point force excitation accelerance. It was then clarified that the point force excitation accelerance at that frequency can be used as a substitute for moving excitation forces.

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“…A single track-soil model for the emission and transmission has often been used, for example [15,19,45]. A single model for all three parts of the prediction, the track, the soil and the building need time-consuming computations and are rarely found [17,21,46]. More examples of detailed models can be found in the state-of-the-art articles [47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Simple and fast prediction of train-induced track forces, ground and building vibrations

Auersch

2020

Rail. Eng. Science

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A simple and fast prediction scheme is presented for train-induced ground and building vibrations. Simple models such as (one-dimensional) transfer matrices are used for the vehicle–track–soil interaction and for the building–soil interaction. The wave propagation through layered soils is approximated by a frequency-dependent homogeneous half-space. The prediction is divided into the parts “emission” (excitation by railway traffic), “transmission” (wave propagation through the soil) and “immission” (transfer into a building). The link between the modules is made by the excitation force between emission and transmission, and by the free-field vibration between transmission and immission. All formula for the simple vehicle–track, soil and building models are given in this article. The behaviour of the models is demonstrated by typical examples, including the mitigation of train vibrations by elastic track elements, the low- and high-frequency cut-offs characteristic for layered soils, and the interacting soil, wall and floor resonances of multi-storey buildings. It is shown that the results of the simple prediction models can well represent the behaviour of the more time-consuming detailed models, the finite-element boundary-element models of the track, the wavenumber integrals for the soil and the three-dimensional finite-element models of the building. In addition, measurement examples are given for each part of the prediction, confirming that the methods provide reasonable results. As the prediction models are fast in calculation, many predictions can be done, for example to assess the environmental effect along a new railway line. The simple models have the additional advantage that the user needs to know only a minimum of parameters. So, the prediction is fast and user-friendly, but also theoretically and experimentally well-founded.

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<b>A Numerical Simulation Method for Ground and Building Vibration Based on Three Dimensional Dynamic Analysis</b>

Cited by 8 publications

References 7 publications

<b>Recent Studies on Wayside Environmental Problems</b>

<b>Recent Studies on Wayside Environmental Problems</b>

<b>Numerical Simulation of Train-induced Vibration in Consideration of Types of Excitation Forces</b>

Simple and fast prediction of train-induced track forces, ground and building vibrations

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