Analysis of the dominant vibration frequencies of rail bridges for structure-borne noise using a power flow method

Li, Q.; Wu, Di

doi:10.1016/j.jsv.2013.02.036

Cited by 47 publications

(32 citation statements)

References 12 publications

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“…The peak frequency of the SPL ranges 40-125 Hz, in agreement with the frequency range of the force transmitted from the track to the bridge [23]. The SPL at measurement point S 5 reaches its lowest level at 80-630 Hz, where bridge-borne noise is dominant; the latter is attenuated with increasing distance.…”

Section: Steel-concrete Composite Bridgessupporting

confidence: 73%

“…Moreover, although the energy from higher-frequency vibrations is transmitted from the track to the bridge structure with rapid attenuation, there are still some weaker vibration peaks. Li and Wu [23] reported that wheel-rail contact forces and power flows to the rail-bridge subsystem were primarily [21] driven by contents around the natural frequency of a single wheel adhering to the elastically supported rail, providing a mechanism to determine the dominant frequencies of bridge vibrations. However, the local, natural vibrational characteristics of bridge slabs were ignored.…”

Section: All-concrete Bridgesmentioning

confidence: 99%

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Review of recent progress in studies on noise emanating from rail transit bridges

Yang

Chen

et al. 2016

J. Mod. Transport.

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In recent years, there has been rapid growth of Chinese rail transit networks. Many of these networks require elevated bridges. This results in a bridge-borne noise source, which occurs in addition to the main noise source (i.e., wheel-rail interactions). Bridge-borne noise is attracting increasing attention because of its low-frequency noise characteristics. This review paper first analyzes the space distribution, spectral characteristics, and sound pressure levels of noise radiated by all-concrete, steelconcrete composite, and all-steel bridges, mainly according to experimental studies. Second, this paper reviews existing theoretical prediction models of noise emanating from bridges: the semianalytical method, the Rayleigh integral method, the boundary element method, and statistical energy analysis. Several case studies are reviewed, and their results are discussed. Finally, according to the results of the current review, the main factors affecting bridgeborne noise are analyzed, several noise reduction measures are proposed for different types of bridges, and their effectiveness is demonstrated.

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Section: Steel-concrete Composite Bridgessupporting

confidence: 73%

Section: All-concrete Bridgesmentioning

confidence: 99%

Review of recent progress in studies on noise emanating from rail transit bridges

Yang

Chen

et al. 2016

J. Mod. Transport.

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“…Power flow analysis has been widely used to investigate the steady-state responses of coupled structural systems made up of various subsystems. Li and Wu [16] recently proposed a force-method-based [17,18] power flow approach to determine the structure mobility of a vehicle-track-bridge system and the power input to each subsystem. As shown in Ref.…”

Section: Vibration Of Bridge and Railmentioning

confidence: 99%

“…Because the original structures are coupled by the spring-dashpot pairs, the relative compression or tension displacement of a spring-dashpot pair due to its internal force should be consistent with the gap change (relative displacement) between the two nodes on the released structures where the spring is connected. Thus the compatibility equations can be expressed as [16] α…”

Section: Vibration Of Bridge and Railmentioning

confidence: 99%

A combined power flow and infinite element approach to the simulation of medium-frequency noise radiated from bridges and rails

et al. 2016

Journal of Sound and Vibration

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“…By using the latter method 33,34 , the compatibility equation of the discretely supported rail for harmonic motion at angular frequency  is expressed as . Then the residual method 31 is applied to calculate the mobilities of the free rail subjected to a point force at the rail head node and each node of the rail model corresponding to a support spring.…”

Section: Track Modelmentioning

confidence: 99%

Estimation of track parameters and wheel–rail combined roughness from rail vibration

Thompson

Toward

2017

Proceedings of the Institution of Mechanical Engineers, Part F:

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Rolling noise from railways is significantly affected by the wheel-rail combined roughness and the dynamic properties of the track. To facilitate vibration and noise predictions it is desirable to be able to determine these parameters accurately from field measurements. In this study an inverse method to determine these parameters is adopted and enhanced. Use is made of a track model based on a wavenumber finite element model of the free rail coupled to discrete supports, which allows for the pinned-pinned mode and cross-sectional deformation of the rail. The rail vibration induced by hammer impacts and the vibration during train passages are simulated using this model, and these results are then applied to illustrate the accuracy of the direct and indirect methods for the estimation of track decay rate. These methods are compared in a case study for a ballasted track for which hammer impact and train pass-by measurements have been obtained. Other track parameters can also be extracted from the measured data by using the advanced track model. Thereafter a more complete method is adopted to estimate the wheel-rail combined roughness from measured rail vibration under train passages. A comparison is conducted among the estimated roughness levels obtained from this full method, an existing simplified method and the direct measurement method. It is found that the simplified method overestimates the roughness around the pinned-pinned resonance frequency but gives a good estimation if the track decay

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Analysis of the dominant vibration frequencies of rail bridges for structure-borne noise using a power flow method

Cited by 47 publications

References 12 publications

Review of recent progress in studies on noise emanating from rail transit bridges

Review of recent progress in studies on noise emanating from rail transit bridges

A combined power flow and infinite element approach to the simulation of medium-frequency noise radiated from bridges and rails

Estimation of track parameters and wheel–rail combined roughness from rail vibration

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