Improvement of fatigue resistance through box-action for I-girder composite bridges
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Bibliographic Details
| Author(s): |
Victor Johan Vestman
(Ramböll, Luleå, Sweden)
Peter Collin (Luleå University of Technology; Ramböll, Luleå, Sweden) Jens Häggström (Luleå University of Technology) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016 | ||||
| Published in: | IABSE Congress Stockholm, 2016 | ||||
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| Page(s): | 1988-1994 | ||||
| Total no. of pages: | 7 | ||||
| Year: | 2016 | ||||
| DOI: | 10.2749/stockholm.2016.1996 | ||||
| Abstract: |
When strengthening existing I-girder composite bridges one idea is to make the cross section act like a box section, by adding a horizontal truss between the bottom flanges. This means that eccentric loads produce a torque that is transferred by shear forces around the section. The magnitude of the effects coming from introducing such a framework between girders is addressed in this article. The fatigue resistance will be improved by the reduced stress ranges and increased amount of tolerated load cycles and extend the lifetime of the details, and by so the lifetime for the bridge. The work described in the paper is part of the European R&D project Prolonging Life Time of Old Steel and Steel-Concrete Bridges (ProLife), RFCS 2015-00025 |
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| Keywords: |
steel fatigue composite torsion strengthening Box action framework I-girder
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