Noise assessment of expansion joints built perpendicularly and angled in the direction of traffic. Measurement method: Case study

IF 3.4 2区 物理与天体物理 Q1 ACOUSTICS
Rafał Żuchowski, Artur Nowoświat, Michał Marchacz, Marcin Górski
{"title":"Noise assessment of expansion joints built perpendicularly and angled in the direction of traffic. Measurement method: Case study","authors":"Rafał Żuchowski,&nbsp;Artur Nowoświat,&nbsp;Michał Marchacz,&nbsp;Marcin Górski","doi":"10.1016/j.apacoust.2025.110674","DOIUrl":null,"url":null,"abstract":"<div><div>Although expansion joints are an essential element of bridge infrastructure, they cause huge noise problems. Expansion joints can be structured differently whilst also being able to be installed differently. This article presents a case study on expansion joints installed perpendicularly and at an angle to the direction of traffic. It appears that the installation method affects the overall level of sound produced. Differences between diagonal and perpendicular constructions in the direction of traffic reach up to 2.9 dB. This value approximately corresponds to a doubling of the level of noise. The paper also presents a Type B uncertainty assessment for a Class I acoustic metre. The separation of upper and lower bounds of uncertainty is a particularly interesting result. In doing so, it was noted that the interval in which the true value of the measurement is located is asymmetrical. In the case of a type B uncertainty analysis, an upper limit on the expanded uncertainty of <span><math><mrow><msubsup><mi>U</mi><mrow><mi>B</mi><mo>,</mo><mn>95</mn></mrow><mo>+</mo></msubsup><mo>=</mo><mn>1.12</mn><mspace></mspace><mtext>dB</mtext></mrow></math></span> and a lower limit of <span><math><mrow><msubsup><mi>U</mi><mrow><mi>B</mi><mo>,</mo><mn>95</mn></mrow><mo>-</mo></msubsup><mo>=</mo><mo>-</mo><mn>1.22</mn><mspace></mspace><mtext>dB</mtext></mrow></math></span>.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"235 ","pages":"Article 110674"},"PeriodicalIF":3.4000,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Acoustics","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0003682X2500146X","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ACOUSTICS","Score":null,"Total":0}
引用次数: 0

Abstract

Although expansion joints are an essential element of bridge infrastructure, they cause huge noise problems. Expansion joints can be structured differently whilst also being able to be installed differently. This article presents a case study on expansion joints installed perpendicularly and at an angle to the direction of traffic. It appears that the installation method affects the overall level of sound produced. Differences between diagonal and perpendicular constructions in the direction of traffic reach up to 2.9 dB. This value approximately corresponds to a doubling of the level of noise. The paper also presents a Type B uncertainty assessment for a Class I acoustic metre. The separation of upper and lower bounds of uncertainty is a particularly interesting result. In doing so, it was noted that the interval in which the true value of the measurement is located is asymmetrical. In the case of a type B uncertainty analysis, an upper limit on the expanded uncertainty of UB,95+=1.12dB and a lower limit of UB,95-=-1.22dB.
求助全文
约1分钟内获得全文 求助全文
来源期刊
Applied Acoustics
Applied Acoustics 物理-声学
CiteScore
7.40
自引率
11.80%
发文量
618
审稿时长
7.5 months
期刊介绍: Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信