Survey of Metro Excitation Frequencies and Coincidence of Different Modes

Cox, Stephen J.; Wang, A.; Adedipe, A.

doi:10.1007/978-3-540-74893-9_11

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…The vibrations induced by underground trains are generally in the frequency range of 20–100 Hz, 24,25 which are annoying for the residents of buildings. 3 The beam on elastic foundation moving load (Winkler) model is one of the simplest train loading models used in the literature.…”

Section: Numerical Modelingmentioning

confidence: 99%

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Effectiveness of grouted layer in the mitigation of subway-induced vibrations

Sadeghi

Haghighi

Esmaeili

2022

Proceedings of the Institution of Mechanical Engineers, Part F:

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As a practical countermeasure against generally destructive subway-induced vibrations, the injection of a continuous thin layer of soft materials into the soil under adjacent receivers is investigated in this paper for the first time. To this aim, simulations were carried out using a finite/infinite element model of a railway track, tunnel, and surrounding soil. A straightforward analytical approach was implemented to model the dynamic excitation of the moving train. In addition, the effect of a soft V-shaped grouted layer on vibration mitigation on the ground was evaluated via a parametric analysis that determined the impacts of soil type, grout specifications, and train speed. The obtained results clearly indicated that a softer isolator (i.e., the grouted layer) in combination with a stiffer soil provides the best configuration for attenuating the subway-induced vibrations. Furthermore, the injection angle and train speed were shown to have minimal impacts on the isolator performance. Other contributions of the present paper include developing a simple equation to estimate the grouted layer effectiveness and describing how the isolator works in layered soils.

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Section: Numerical Modelingmentioning

confidence: 99%

“…It should be noted that the un-sprung mass of train has a significant impact on the ground-borne vibration. 25 To consider this effect, the mass of the rail part in the FE/IE model was taken as the un-sprung mass of the train.…”

Section: Numerical Modelingmentioning

confidence: 99%

Effectiveness of grouted layer in the mitigation of subway-induced vibrations

Sadeghi

Haghighi

Esmaeili

2022

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…This frequency is of utmost importance because of its strong influence in the development of the rail corrugation, fixing the wavelength of this defect according to Grassie and Kalousek (1993). Cox et al (2008) proposed Eq.4 to calculate this frequency.…”

Section: Frequency (Hz) S-102mentioning

confidence: 99%

Experimental analysis in frequency domain of the accelerations induced by different vehicles in high speed railway tracks

Martínez-Acevedo¹,

Rodríguez-Plaza²,

Zamorano-Martín³

et al. 2016

IOSR

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The accelerations induced by different vehicles in the track are studied in the frequency domain from data collected in an extensive measurement campaign in the high speed line Madrid-Barcelona-French Border. In the first section, it will be determined which vehicle induces higher accelerations in the infrastructure taking into account the train model, speed and vehicle configuration (simple or double). Then, the vibration response will be described for the different vehicles running on the track, identifying the contribution of the quasi-static load as well as different dynamic effects typical from ballasted high speed railway tracks. Therefore, the frequency bands in which the different dynamic excitation may appear are calculated, collating the results with the measured accelerations and establishing a cause-effect relationship in the different acceleration spectra.

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Study on the dynamic characteristics and parameter identification of elastic hydraulic isolator in floating slab track system

Fang,

Geng

2024

J Mech Sci Technol

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Survey of Metro Excitation Frequencies and Coincidence of Different Modes

Cited by 4 publications

References 5 publications

Effectiveness of grouted layer in the mitigation of subway-induced vibrations

Effectiveness of grouted layer in the mitigation of subway-induced vibrations

Experimental analysis in frequency domain of the accelerations induced by different vehicles in high speed railway tracks

Study on the dynamic characteristics and parameter identification of elastic hydraulic isolator in floating slab track system

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