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Carbon fiber-reinforced polymer strengthening and monitoring of the Gröndals bridge in Sweden
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0001-7799-5809
Structural Engineer Research Laboratory, Duebendorf.
Royal Institute of Technology.
2007 (English)In: Journal of composites for construction, ISSN 1090-0268, E-ISSN 1943-5614, Vol. 11, no 2, p. 227-235Article in journal (Refereed) Published
Abstract [en]

The Gröndal Bridge is a large freivorbau bridge (prestressed concrete box bridge), approximately 400 m in length with a free span of 120 m. It was opened to tram traffic in the year 2000. Just after opening cracks were noticed in the webs, these cracks have then increased, the size of the largest cracks exceeded 0.5 mm, and at the end of 2001 the bridge was temporarily strengthened. This was carried out with externally placed prestressed steel stays. The reason for the cracking is still debated and will be further discussed in this paper. Nevertheless, it was clear that the bridge needed to be strengthened. The strengthening methods used were CFRP plates at the serviceability limit state and prestressed dywidag stays at the ultimate limit state. The strengthening was carried out during 2002. At the same time monitoring of the bridge commenced, using LVDT crack gauges as well as optical fiber sensors.

Place, publisher, year, edition, pages
2007. Vol. 11, no 2, p. 227-235
National Category
Infrastructure Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-11265DOI: 10.1061/(ASCE)1090-0268(2007)11:2(227)ISI: 000245529800013Scopus ID: 2-s2.0-33947311362Local ID: a325ed40-6b5b-11dc-9e58-000ea68e967bOAI: oai:DiVA.org:ltu-11265DiVA, id: diva2:984214
Note
Validerad; 2007; 20070925 (bajo)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Täljsten, Björn

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