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Strengthening of steel girder bridges using coiled pins
EFLA Consulting Engineers, Reykjavik, Iceland.
EFLA Consulting Engineers, Reykjavik, Iceland.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering. Ramboll.ORCID iD: 0000-0002-8353-9225
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering. Swedish Transport Administration.ORCID iD: 0000-0003-1435-0071
2019 (English)In: 20th Congress of IABSE 2019: The Evolving Metropolis, International Association for Bridge and Structural Engineering (IABSE) , 2019, Vol. 1, p. 38-43Conference paper, Published paper (Refereed)
Abstract [en]

A requirement for heavier vehicular transport on the Norwegian road network has resulted in a demand for increased bearing capacity for many of the older bridges in the country. Many of the bridges that have been found to have insufficient capacity against present-day demands are steel girder bridges with concrete slabs without a shear connection between steel and concrete. There is a large number of bridges of this type in Norway and the paper presents strengthening of two of those, in Aust-Agder county in the south of the country. These bridges are approximately 30 m long, single span. The bearing capacity has been upgraded by installing composite action between the steel girders and the concrete slab using coiled pins, in conjunction with thickening of the bottom flange of the steel girders. To obtain composite action, the pins are fitted to tightly drilled holes through the top flange of girders up into the concrete slab. Coiled pins have not been used much for bridge applications. In the work presented, the method has been found to have advantages in terms of cost and workability. Furthermore, the method has benefits when viewed from an environmental standpoint, since it allows strengthening of existing non-composite bridges using relatively little new material, and minimizes traffic disruptions.

Place, publisher, year, edition, pages
International Association for Bridge and Structural Engineering (IABSE) , 2019. Vol. 1, p. 38-43
Series
IABSE Reports ; 114
Keywords [en]
bridge strengthening, coiled pins, steel girder bridges, concrete deck, composite action
National Category
Other Civil Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-76128DOI: 10.2749/newyork.2019.0038Scopus ID: 2-s2.0-85074451376OAI: oai:DiVA.org:ltu-76128DiVA, id: diva2:1355008
Conference
2019 IABSE Congress, 4-6 Septemeber, 2019, New York City, New York, USA
Note

ISBN för värdpublikation: 978-1-5108-9537-9

Available from: 2019-09-26 Created: 2019-09-26 Last updated: 2024-01-12Bibliographically approved

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Collin, PeterHällmark, Robert

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