{"id":4419,"date":"2021-11-29T06:56:59","date_gmt":"2021-11-29T11:56:59","guid":{"rendered":"http:\/\/efterklang.org.hemsida.eu\/projects\/the-asa-tunnel-kungsbacka\/"},"modified":"2024-02-16T12:37:20","modified_gmt":"2024-02-16T11:37:20","slug":"asatunneln-kungsbacka","status":"publish","type":"projects","link":"https:\/\/efterklang.org\/sv\/projects\/asatunneln-kungsbacka\/","title":{"rendered":"\u00c5satunneln, Kungsbacka"},"content":{"rendered":"
Bakgrund<\/h6>\n

Ut\u00f6kad s\u00e4kerhet- och vibrationsanalys f\u00f6r bergtunnel som underlag till en ber\u00e4kningsmodell f\u00f6r att ber\u00e4kna vibrationsspridning fr\u00e5n j\u00e4rnv\u00e4gstunnlar. <\/span><\/p>\n

Uppdrag<\/h6>\n

P\u00e5 uppdrag av Implenia Sverige AB, har Efterklang gjort verifierande vibrationsm\u00e4tningar i \u00c5satunneln i Kungsbacka kommun som underlag till en ber\u00e4kningsmodell f\u00f6r att ber\u00e4kna vibrationsspridning fr\u00e5n j\u00e4rnv\u00e4gstunnlar. J\u00e4rnv\u00e4gstunneln \u00e4r en del av V\u00e4stkustbanan som str\u00e4cker sig mellan G\u00f6teborg och Lund. Genom att utf\u00f6ra m\u00e4tningar kan \u00e5tg\u00e4rder optimeras f\u00f6r att skydda boende och verksamheter i omgivningen till framtida j\u00e4rnv\u00e4gstunnlar. <\/span><\/p>\n

\u00c5satunneln har sp\u00e5rgrundl\u00e4ggning med ballast och underballast. Ett flertal olika t\u00e5gtyper trafikerar V\u00e4stkustbanan och omfattar bland annat godst\u00e5g, regionalt\u00e5g, \u00d6resundst\u00e5g och X2000. Efterklangs uppdrag p\u00e5gick kontinuerligt under en m\u00e5nad, d\u00e4r n\u00e4stan 3000 t\u00e5gpassager registrerades. Vibrationsniv\u00e5er i tunnelv\u00e4gg registrerades som smalbandsniv\u00e5er upp till 1kHz. En enorm datam\u00e4ngd har insamlats f\u00f6r m\u00f6jliga framtida analyser. <\/span><\/p>\n

Resultat<\/h6>\n

Tillsammans med tidigare uppm\u00e4tta \u00f6verf\u00f6ringsfunktioner anv\u00e4ndes uppm\u00e4tt k\u00e4llstyrka i \u00c5satunneln som indata f\u00f6r validering av en ber\u00e4kningsmodell. Ber\u00e4kningsmodellen anv\u00e4nds f\u00f6r att ber\u00e4kna stomljudsniv\u00e5er fr\u00e5n framtida j\u00e4rnv\u00e4gstrafik i Varbergstunneln till omkringliggande bost\u00e4der. <\/span><\/p>\n

Uppdraget genomf\u00f6rdes fr\u00e5n november 2019 till januari 2020. <\/span><\/p>\n

 <\/p>\n

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