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Luftspalters inverkan på bullerskärmars ljudreduktion
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
2018 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Common practice in acoustic design does not consider air gaps. Thereare different opinions about air gaps and their affect on noise reduction.The report analyzes the credibility of the requirements used in a theoretical calculation model that addresses noise reduction in acoustic screens. Several measurement results from empirical attempts in a realistic environment for different screen models are compared.The result shows that a horizontal 50-millimeter gap has no noticeable impact on noise reduction. The result for horizontal air gaps against ground is of particular interest as it allows a simplified foundation to be used.Vertical air gaps have a greater negative influence on noise reduction but the results presented in the report can be used when lower demands are set on screens.An economic analysis shows that the result from the experiment when using a simplified foundation results in a cost reduction ofapproximately 300 SEK per meter acoustic screen.

Place, publisher, year, edition, pages
2018. , p. 75
Keywords [sv]
Acoustics, noise screens, anti-noise barriers, traffic noise
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:uu:diva-357003ISRN: UTH-INGUTB-EX-B-2018/27-SEOAI: oai:DiVA.org:uu-357003DiVA, id: diva2:1237882
External cooperation
Bjerking Uppsala
Educational program
Bachelor Programme in Construction Engineering
Presentation
2018-05-31, Sigbahnsalen, Ångströmslaboratoriet, Lägerhyddsvägen 1, Uppsala, 14:30 (Swedish)
Supervisors
Examiners
Available from: 2018-08-10 Created: 2018-08-10 Last updated: 2018-08-10Bibliographically approved

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fulltext(6985 kB)9 downloads
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Type fulltextMimetype application/pdf

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Strandquist, KarlMattsson, Johannes
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CiteExportLink to record
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  • apa
  • ieee
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