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  1. National Taiwan Ocean University Research Hub

Research on Noise Radiation Efficiency of Rail Bridge System and Sensitivity Analysis of Influencing Parameters

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Project title
Research on Noise Radiation Efficiency of Rail Bridge System and Sensitivity Analysis of Influencing Parameters
Code/計畫編號
110-2222-E-019-004-
Translated Name/計畫中文名
軌道橋梁系統結構噪音輻射效率研究及影響參數敏感度分析
 
Project Coordinator/計畫主持人
Wei-Lun Hsu
Funding Organization/主管機關
National Science and Technology Council
 
Department/Unit
Department of Systems Engineering and Naval Architecture
Website
https://www.grb.gov.tw/search/planDetail?id=13939913
Year
2021
 
Start date/計畫起
01-08-2021
Expected Completion/計畫迄
31-07-2022
 
Bugetid/研究經費
871千元
 
ResearchField/研究領域
土木水利工程
 

Description

Abstract
本研究將透過一系列之研究方法,逐步釐清平板聲輻射功率值、最適之元素大小、元素種類、利用三維動態有限元素模型探討橋梁在列車通過引致之結構噪音量、將實際場域驗證量測回饋至分析模型中。而在不同軌道型式對於橋面之入力試驗,亦為過去未見於文獻中之量測,本項量測除可驗證本研究之有限元素結果外,對於未來採用SEA進行結構噪音評估工作存在相當之參考價值。本研究將針對軌道系統常見橋型之結構噪音進行完整探討,本人亦將透過過去服務於軌道工程界之經驗,提出最合適及合理之評估方式,以補足現有軌道系統噪音評估模式。研究成果希望得以立即回饋至工程業界,降低結構噪音對於軌道鄰近居民之困擾。
 
Keyword(s)
橋梁結構噪音
振動噪音
振動噪音輻射轉換功率
元素大小最適化
三維暫態有限元素分析
減振軌道
軌道不整
Structure-Borne Noise
Noise and Vibration
c
Optimal element size
3D transit Finite Element analysis
Vibration Isolation track
Track irregularity
 
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