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Testing of composite girders with coiled spring pin shear connectors
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering. (Byggkonstruktion)ORCID iD: 0000-0003-1435-0071
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.ORCID iD: 0000-0001-9937-6072
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.ORCID iD: 0000-0002-9627-4713
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.ORCID iD: 0000-0002-8353-9225
2021 (English)In: IABSE Congress Ghent 2021: Structural Engineering for Future Societal Needs / [ed] H. H. (Bert) Snijder; Bart De Pauw; Sander van Alphen; Pierre Mengeot, International Association for Bridge and Structural Engineering (IABSE) , 2021, p. 1700-1708Conference paper, Published paper (Refereed)
Abstract [en]

Today, steel girder bridges with concrete deck slabs are generally constructed as steel-concrete composite structures, to utilize the material and the structural parts in an efficient way. However, many existing bridges constructed before the early 1980´s were designed without shear connectors at the steel-concrete interface. With increasing traffics loads and higher amount of load cycles, there is sometimes a need to strengthen these bridges. One way to increase the bending moment capacity is to create composite action by post-installation of shear connectors. The authors have studied the concept of strengthening by post-installed shear connectors, with a focus on a connector called coiled spring pin. This paper presents the results from the first beam tests performed with this kind of shear connector. In line with the previous push-out tests, the test results indicate a very ductile shear connection, with a potential to be a material- and cost-efficient strengthening alternative.

Place, publisher, year, edition, pages
International Association for Bridge and Structural Engineering (IABSE) , 2021. p. 1700-1708
Keywords [en]
bridge, strengthening, rehabilitation, shear connector, test, composite girder, coiled spring pin
National Category
Infrastructure Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-87385DOI: 10.2749/ghent.2021.1700Scopus ID: 2-s2.0-85119084525OAI: oai:DiVA.org:ltu-87385DiVA, id: diva2:1600752
Conference
IABSE Congress 2021: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September, 2021
Funder
Swedish Transport AdministrationSvenska Byggbranschens Utvecklingsfond (SBUF)Available from: 2021-10-05 Created: 2021-10-05 Last updated: 2023-09-05Bibliographically approved

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Publisher's full textScopushttps://iabse.org/ghent2021

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Hällmark, RobertNilforoush, RasoulVestman, VictorCollin, Peter

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