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Post-tensioning of reinforced concrete trough bridge decks: laboratory test
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0002-1398-6118
2012 (English)Report (Other academic)
Abstract [en]

The Swedish Transport Administration (Trafikverket) is the owner of a large number of railway concrete trough bridges, which were designed according to standard codes in the 1950’s. The traffic loads are today higher than the design loads and the level of ballast is also much higher today. The degree of utilization of the bottom slab is very high, which can be confirmed by calculations and visual inspections (flexural cracks are visible). This report presents the results from a laboratory test of a trough bridge, strengthened by transversal post-tensioning of the slab, at Luleå University of Technology.Calculations according to three design codes, gives a theoretical increase of the shear capacity with 5 – 100%, and the test confirmed a large increase of shear capacity. The main objective for the strengthening was to increase the shear capacity, but also the theoretical flexural capacity was increased by 21%.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2012. , p. 66
National Category
Infrastructure Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-22744Local ID: 41b374e4-68b5-4589-9f3f-4c3017ee106cOAI: oai:DiVA.org:ltu-22744DiVA, id: diva2:995793
Note
Godkänd; 2012; 20130123 (jonnil)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-03-26Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf