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In contrast to welded built-up shapes, fatigue behaviour of butt-welded rolled beams has not been thoroughly investigated until now. As a consequence, several construction codes impose undue restrictions on the application of butt-welded rolled beams in the case of dynamic loads. In order to correct this situation ARBED, in collaboration with the University of Karlsruhe (FRG), initiated fatigue tests on 74 full-scale samples of HE-300-B and HE-400-M beams, as well as on 44 small size samples, worked out of butt-welded beams. The influence on fatigue behaviour of joint shape and welding conditions (shop or site welding), as well as the optimisation of joint preparation were investigated. The results demonstrate significantly better fatigue behaviour in butt-welded joints of rolled beams than in built-up shapes. Joints prepared without windows at the web-flange junction show an improved fatigue behaviour as compared to joints with windows. The present results should be taken into account in a new classification of butt-welded rolled beams in Eurocode 3.

Additional information

Authors: BECKER F, ARBED Recherches, Esch-sur-Alzette (LU);HENRION R, ARBED Recherches, Esch-sur-Alzette (LU);STAMMET L, ARBED Recherches, Esch-sur-Alzette (LU);MANG F, ARBED Recherches, Esch-sur-Alzette (LU);BUCAK O, ARBED Recherches, Esch-sur-Alzette (LU)
Bibliographic Reference: EUR 13077 DE (1991) 238 pp., FS, ECU 20
Availability: (2)
ISBN: ISBN 92-826-1945-1
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