{"id":6560,"date":"2026-06-20T22:40:20","date_gmt":"2026-06-20T14:40:20","guid":{"rendered":"\/jase\/?post_type=tkuisotope&p=6560"},"modified":"2026-07-27T13:57:10","modified_gmt":"2026-07-27T05:57:10","slug":"noise-radiation-analysis-of-box-shaped-rail-bridges-considering-multi-span-effects","status":"publish","type":"tkuisotope","link":"\/jase\/?tkuisotope=noise-radiation-analysis-of-box-shaped-rail-bridges-considering-multi-span-effects","title":{"rendered":"Noise-radiation Analysis of Box-shaped Rail Bridges Considering Multi-span Effects"},"content":{"rendered":"\n
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<\/i> 2019<\/a><\/p>\n<\/div>\n\n\n\n

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<\/i> Volume 22, Issue 3<\/a><\/p>\n<\/div>\n\n\n\n

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L. Y. Liu1<\/sup>, S. Y. Peng1<\/sup>, J. D. Yau2<\/sup><\/i><\/a>, Q. M. Liu1<\/sup> and R. Xi1<\/sup><\/p>\n\n\n\n

1<\/sup>Engineering Research Center of Railway Environment Vibration and Noise, Ministry of Education, East China Jiaotong University, Nanchang 330013, P.R. China <\/p>\n\n\n\n

2<\/sup>Department of Architecture, Tamkang University, New Taipei City, Taiwan 251, R.O.C.<\/p>\n<\/div>\n\n\n\n

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Received:\u00a0September 25, 2018
Accepted:\u00a0May 30, 2019
Publication Date:\u00a0June 20, 2026<\/p>\n<\/div>\n<\/div>\n\n\n\n

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Modal analysis of a simply supported box girder. 1st bending mode (f1<\/sub> = 6.07 Hz); (b) 2nd bending mode (f2<\/sub> = 15.92 Hz); (c) 3rd bending mode (f3<\/sub> = 19.85 Hz).<\/p>\n<\/div>\n<\/div>\n\n\n\n

<\/i> Copyright <\/strong>The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0)<\/a>, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.<\/p>\n\n\n\n

Download Citation:  BibTeX <\/a>| http:\/\/dx.doi.org\/10.6180\/jase.201909_22(3).0008<\/a>  <\/p>\n\n\n\n

Download PDF<\/a><\/p>\n\n\n\n

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Low-frequency structure-borne noise radiation from train-induced vibration of railway bridges is of concern to assess environmental impacts induced by urban metro system. To carry out the bridge-radiated noise analysis in assessing environmental impacts, the bridge vibration is regarded as an acoustic source of noise radiation so that the finite element (FE) bridge model combined with the acoustic boundary element (BE) method of spatial noise radiation is adopted in performing acoustical computations. For verification, an in-situ experimental noise measurement of rail box-shaped bridge on the selected metro line of Nanchang Metro is used to evaluate the feasibility of the present hybrid FE-BEapproach. In addition, the method of panel acoustic contribution analysis is proposed to assess the noise levels radiated from a single\/multi-span box-shaped bridges, respectively. With the present investigations, the multi-span bridges may result in larger structure-borne radiated sound pressure levels at far-fields than a single-span. Such a multi-span effect on bridge-radiated noise should be accounted for environmental noise evaluation along urban metro lines.<\/p>\n\n\n\n

Keywords:\u00a0Acoustical Boundary Element Method, Box Girder, Finite Element Modeling, Panel Acoustic Contribution Analysis, Structure-borne Noise<\/em><\/p>\n\n\n\n

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