The behaviour and design of the webs of economic-fabrication steel girders used in composite construction

0342396 - ÚTAM 2010 RIV CN eng C - Konferenční příspěvek (zahraniční konf.)
Škaloud, Miroslav - Zörnerová, Marie
The behaviour and design of the webs of economic-fabrication steel girders used in composite construction.
Steel concrete composite and hybrid structures. Singapore: Research publishing services, 2009 - (Lam, D.), s. 166-171. ISBN 978-981-08-3068-7.
[Steel concrete composite and hybrid structures. Leeds (GB), 08.07.2009-10.07.2009]
Grant CEP: GA ČR(CZ) GA103/06/0064; GA AV ČR(CZ) IAA200710603
Grant ostatní: GA ČR(CZ) GA103/08/0275; GA ČR(CZ) GA103/08/1677
Program: GA
Výzkumný záměr: CEZ:AV0Z20710524
Klíčová slova: economic-fabrication steel girders * buckling * fatigue
Kód oboru RIV: JM - Inženýrské stavitelství

Slender webs used in steel and steel-concrete construction are liable to buckle, but fortunately their performance and limit states are very favourably affected by post-buckled behaviour. However, in the case of bridge girders and crane-supporting girders subjected to many times repeated loading, the webs exhibit many times repeated buckling, so-called “breathing”. The authors have been studying this phenomenon for several years now, and in so doing have to date carried out more than 200 tests. Based on an analysis of the results obtained, simple user-friendly formulae are established such as to make it possible completely to disregard the parasitic effect of the cumulative damage process generated by web breathing.
Trvalý link: http://hdl.handle.net/11104/0185140