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The Instrumentation and monitoring of the Varby Bridge
Ramböll Sverige, Ramböll Sverige AB, Luleå.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
Royal Institute of Technology, Projektengagemang i Stockholm AB.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0002-8353-9225
2010 (English)In: Large structures and infrastructures for environmentally constrained and urbanised areas: IABSE symposium, Venice 2010 ; [34th International Symposium on Bridge and Structural Engineering, Venice, Italy, September 22 - 24, 2010] / [ed] Anton Steffen, Zürich: International Association for Bridge and Structural Engineering, 2010, p. 300-301Conference paper, Published paper (Refereed)
Abstract [en]

Numerous cracks have been discovered in the Varby Bridge near Stockholm, Sweden. All cracks are found at the junctions between the cross girders and the main girders, more specifically, at the welds connecting the vertical web stiffeners to the top flanges of the main girders. The cracks might possibly be causing serious problems if they are allowed to propagate through the entire length of the weld, thereby permitting out-of-plane bending of the main girder web. In order to identify the reason for the observed cracks, an ongoing investigation under the commision of the bridge owner was started in the spring of 2009. One conclusion so far, is that the observed cracks conclusively are a result of fatigue As a part of a master thesis, FEM-modelling is currently under way. As the fatigue process is distortional, the propagation phase of the observed cracks might slow down or even stop. One task will be to determine the stress intensity factor versus crack length relationship in order to model a growing crack. The final chosen method of refurbishment will be based upon the results of the study and will be implemented in cooperation with the bridge owner

Place, publisher, year, edition, pages
Zürich: International Association for Bridge and Structural Engineering, 2010. p. 300-301
Series
IABSE Report, ISSN 1025-9104 ; 97
National Category
Applied Mechanics Infrastructure Engineering
Research subject
Solid Mechanics; Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-29309Local ID: 2bf53f8b-94ab-4f1d-8fa5-b6ac684e4c9aISBN: 9783857481222 (print)OAI: oai:DiVA.org:ltu-29309DiVA, id: diva2:1002532
Conference
International Symposium on Bridge and Structural Engineering : 22/09/2010 - 24/09/2010
Note
Godkänd; 2010; 20150519 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-06-20Bibliographically approved

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Eriksson, KjellCollin, Peter

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