Estimation of Structure-Borne Noise Reduction Effect of Steel Railway Bridge Equipped with Floating Ladder Track and Floating Reinforced-Concrete Deck

Watanabe, Tsutomu; Sogabe, Masamichi; Asanuma, Kiyoshi; Wakui, Hajime

doi:10.1299/jmtl.3.83

Cited by 2 publications

(1 citation statement)

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“…To further increase the isolation effect of track structures, Watanabe et al. 33 proposed a double-layer floating system that consists of a floating ladder track and a floating concrete bridge deck. However, the use of resilient tracks is not a common strategy for long-span steel-truss cable-stayed bridges.…”

Section: Introductionmentioning

confidence: 99%

Reduction of vibration and noise in rail transit steel bridges using elastomer mats: Numerical analysis and experimental validation

Zhang

Cao

Ruan

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part F:

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The noise radiating from a steel bridge can be much greater than the pass-by noise levels of trains at-grade. This is attributed to a special phenomenon known as the steel bridge-borne noise, which occurs when shocks and vibrations due to moving train loads are transferred onto the bridge. To investigate the effectiveness of elastomer mats for reducing vibration and noise in rail transit steel bridges, a frequency domain prediction model is established and calibrated through a field experiment. In this model, the train and track interactions were investigated analytically, and the receptance technique was introduced to determine the force transmitted from a multi-layer track structure to the bridge deck. The local vibrations of the bridge components were solved numerically using a hybrid shell/beam finite element model based on a harmonic response analysis. The bridge vibrations were regarded as the source of noise radiation by considering each bridge component as a rectangular flat plate noise source. There was good agreement between the calculated and measured results in terms of both the magnitude and frequency dependence. The mechanisms of vibration transmission and noise radiation were investigated using numerical simulations. In addition, the vibration and noise reduction effects are discussed by numerically comparing a track system with and without an elastomer mat.

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Section: Introductionmentioning

confidence: 99%

Reduction of vibration and noise in rail transit steel bridges using elastomer mats: Numerical analysis and experimental validation

Zhang

Cao

Ruan

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part F:

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Verification of Longitudinal Level Irregularity Suppression Effect at the Structural Boundary by Ballasted Ladder Track

et al. 2022

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The ladder sleeper, which is a type of longitudinal sleeper with long beams in the longitudinal direction of the rail, was developed for the maintenance-labor saving of ballast tracks. In this study, to quantify the load distribution performance of the ladder sleepers at the structural boundary, full-scale model tests were conducted to quantify the vibration transmission reduction effect of the ladder sleepers. Following that, numerical experiments were carried out using a three-dimensional numerical analysis model and it was revealed that the ladder sleeper can reduce the pressure on the sleeper bottom plane by approximately 70% when compared to conventional prestressed concrete sleepers. Furthermore, when laying the ladder sleeper at the structural boundary, it was shown that laying across the structural boundary may be more effective in reducing the pressure on the sleeper bottom plane than laying it in front of the structural boundary. Finally, ladder sleepers were installed on the commercial line and long-term measurements of the longitudinal level irregularity verified the effect of suppressing the longitudinal level irregularity of the ballasted ladder track.

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Estimation of Structure-Borne Noise Reduction Effect of Steel Railway Bridge Equipped with Floating Ladder Track and Floating Reinforced-Concrete Deck

Cited by 2 publications

References 1 publication

Reduction of vibration and noise in rail transit steel bridges using elastomer mats: Numerical analysis and experimental validation

Reduction of vibration and noise in rail transit steel bridges using elastomer mats: Numerical analysis and experimental validation

Verification of Longitudinal Level Irregularity Suppression Effect at the Structural Boundary by Ballasted Ladder Track

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