Structural health monitoring of a concrete bridge in Sweden

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Enochsson, Ola (author)

Structural health monitoring of a concrete bridge in Sweden

Article/chapterEnglish2006

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SPIE,2006
printrdacarrier

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LIBRIS-ID:oai:DiVA.org:ltu-29569
https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-29569URI
https://doi.org/10.1117/12.663988DOI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

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Validerad;2006;20080822 (ysko);Konferensartikel i tidskrift;Bibliografisk uppgift: Volumne: 6176
Over the past decade the interests in upgrading, assessment and maintenance of our ageing infrastructure has grown avalanche-like. The main reason is economical aspects but also reasons due to accessibility environmental consideration play a vital role. Recently the Swedish and Norwegian Railway Association decided to upgrade the Iron Ore Line "Malmbanan", a railway line for transportation of iron from northern Sweden to the coasts of Norway and Sweden. Here the owner wanted to increase the axle loads from 25 to 30 tons to reduce the transportation costs. In one of the cases, the Luossajokk Bridge, a recalculation according to design codes showed that the increased axle loads would exceed the yield limit in the reinforcement. Before any decision was taken regarding strengthening or replacing the bridge an assessment with probabilistic methods was used. It appeared that the bridge could carry the higher load with a safety index β ≥ 4.7 for reasonable assumptions of the load distributions. A measurement system was installed to check the real worst placement of the new iron ore locomotive (IORE), and the actually level of strains in the reinforcement for the worst load case1. It was shown that the strain level was far from critical and that the evaluated worst placement of the locomotive was almost correct2. To assure a reliable transportation a long term monitoring program was arranged to check the development of strains with time. Examples from the probabilistic evaluation and the monitoring of the bridge are given and discussed.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Samhällsbyggnadsteknik Infrastrukturteknik hsv//swe
ENGINEERING AND TECHNOLOGY Civil Engineering Infrastructure Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Samhällsbyggnadsteknik Byggproduktion hsv//swe
ENGINEERING AND TECHNOLOGY Civil Engineering Construction Management hsv//eng
Structural Engineering
Konstruktionsteknik
Byggproduktion
Construction Engineering and Management

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Täljsten, BjörnLuleå tekniska universitet,Byggkonstruktion och -produktion(Swepub:ltu)bjotal (author)
Olofsson, ThomasLuleå tekniska universitet,Byggkonstruktion och -produktion(Swepub:ltu)thoolo (author)
Luleå tekniska universitetByggkonstruktion och -produktion (creator_code:org_t)

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In:Proceedings of SPIE, the International Society for Optical Engineering: SPIE6176:180277-786X1996-756X

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By the author/editor: Enochsson, Ola; Täljsten, Björn; Olofsson, Thomas

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ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Civil Engineerin ...; and Infrastructure E ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Civil Engineerin ...; and Construction Man ...

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By the university: Luleå University of Technology

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