Study of Mitigation of Vibrations and Re-Radiated Noise in Buildings Created by Railway Traffic

Aleksey Zav&#039;yalov; Ol&#039;ga I. Kopytenkova; Andrey Evstaf&#039;ev

doi:doi:10.20295/1815-588X-2023-2-433-440

UDC 331.451

Study of Mitigation of Vibrations and Re-Radiated Noise in Buildings Created by Railway Traffic

Published в Proceedings of Petersburg Transport University · Volume 20, Issue 2, 2023 · Pages 433–440 · Rubrics: HIGH TECHNOLOGIES FOR TRANSPORT

DOI 10.20295/1815-588X-2023-2-433-440

Received: 20.06.2023 Accepted: 20.06.2023 Published: 20.06.2023

Authors

Aleksey Zav'yalov ¹ · Ol'ga I. Kopytenkova ² · Andrey Evstaf'ev ³

1 Emperor Alexander I St. Petersburg State Transport University (Postgraduate Student, Assistant)
Russian Federation

2 Emperor Alexander I St. Petersburg State Transport University (Professor)

3 Emperor Alexander I St. Petersburg State Transport University (Department of Electric Traction, Head of the Department)
Russian Federation

ABSTRACT

Purpose: To present an integrated methodology that will model the entire environment, from the source of vibration to the re-radiated noise within buildings. Conduct a brief parametric analysis to show the potential of this approach in evaluating the effectiveness of mitigation measures for vibration and re-radiated noise. Methods: Estimate sound pressure levels generated in residential compartments as a result of train travel; analyze the coupled train-trail-ground-construction system; solve the acoustic part of the problem. Results: A numerical model based on the substructuring approach is considered. A measure to reduce the level of vibration and re-radiated noise inside the building has been studied, which consists in a continuous “floating slab-track” system, for which different values of the elastic mat stiffness under the slab have been considered. It has been found that the effectiveness of this measure comes from a positive combination of two essential factors: the frequency content of the response and the cutoff frequency assigned to each solution adopted. Practical significance: A comprehensive methodology for determining ground vibration and re-radiated noise caused by railway traffic is presented. The dependence is obtained, that the efficiency of reduction of vibration level and re-radiated noise inside the building, will be higher, if the solution with low cutoff frequency is applied and the response has the most significant frequency content at high frequencies.

KEYWORDS

Vibration re-radiated noise acoustic model protection against re-radiated noise and vibration stiffness of the elastic mat under the slab

Information Text References

Authors:

1. Emperor Alexander I St. Petersburg State Transport University (Postgraduate Student, Assistant)

Russian Federation

2. Emperor Alexander I St. Petersburg State Transport University (Professor)

3. Emperor Alexander I St. Petersburg State Transport University (Department of Electric Traction, Head of the Department)

Russian Federation

Type:

Article

Pages:

from 433 to 440

Status:

Published

Subject area:

UDC 331.451

Language:

Russian

Keywords:

Vibration, re-radiated noise, acoustic model, protection against re-radiated noise and vibration, stiffness of the elastic mat under the slab

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References

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Study of Mitigation of Vibrations and Re-Radiated Noise in Buildings Created by Railway Traffic

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