Problems of lamella flanges in steel bridge construction

0443920 - ÚTAM 2016 RIV CZ eng A - Abstrakt
Křístek, V. - Škaloud, Miroslav - Kunrt, J. - Urushadze, Shota
Problems of lamella flanges in steel bridge construction.
Engineering mechanics 2015. 21st International conference, May 11-14, 2015, Svratka, Czech Republic. Extended abstracts. Prague: Institute of theoretical and applied mechanics, Academy of Sciences of the Czech Republic, v. v. i., 2015 - (Náprstek, J.; Fischer, C.). s. 164-165. ISBN 978-80-86246-42-0. ISSN 1805-8248.
[Engineering mechanics 2015 /21./. 11.05.2015-14.05.2015, Svratka]
Grant CEP: GA ČR(CZ) GC13-34405J
Institucionální podpora: RVO:68378297
Klíčová slova: bridges * lamella flanges * repeated loading * breathing * limit states
Kód oboru RIV: JM - Inženýrské stavitelství

As the plate elements of ordinary lamella flanges always exhibit unavoidable initial geometrical imperfections, a gap always occurs between them, into which the loaded lamella is pressed under load. Given the fact that the loading is many times repeated, the above phenomenon is also many times repeated, a pronounced cumulative damage process being thereby generated. This leads, as it became manifest during the authors´ tests, to the initiation and propagation of fatigue cracks in the longitudinal fillet welds connecting the individual lamellas, which can, of course, imperil the safety and useful lifetime of the bridge structure concerned.
Trvalý link: http://hdl.handle.net/11104/0246847