教師資料查詢 | 類別: 期刊論文 | 教師: 姚忠達 Jong-dar Yau (瀏覽個人網頁)

標題:Noise-radiation analysis of box-shaped rail bridges considering multi-span effects
學年108
學期1
出版(發表)日期2019/09/01
作品名稱Noise-radiation analysis of box-shaped rail bridges considering multi-span effects
作品名稱(其他語言)
著者L Y Liu; S Y Peng; J D Yau; Q M Liu; R Xi
單位
出版者
著錄名稱、卷期、頁數Journal of Applied Science and Engineering 22(3), p.469-479
摘要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-BE approach. 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.
關鍵字Acoustical Boundary Element Method;Box Girder;Finite Element Modeling;Panel Acoustic Contribution Analysis;Structure-borne Noise
語言英文(美國)
ISSN
期刊性質國內
收錄於EI;ESCI;
產學合作
通訊作者JD YAU
審稿制度
國別中華民國
公開徵稿
出版型式,電子版
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