ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In recent years, the replacement repair welding, through which damaged bridges arerepaired by replacing of the damaged sections with new steel plates through cutting and weldingunder in-service conditions, has been highlighted for its brilliant features i.e. it can be achievedwithout incurring traffic dislocation. However, the validity of the repair method is not fully verifiedbecause of its lack of safety and reliability. Moreover, repair method by welding inevitably involvescutting and welding process, and the weldability of the replacement repair welded joints has not yetbeen clarified. In this paper, the weldability of the replacement-repair-welded joints wasinvestigated in order to improve reliability in the repair welded joints of the aged steel bridge. ASteel plate was extracted from the steel bridge after the period of prolonged service, and waswelded with a new plate, using replacement repair welding technique, in order to construct aspecimen. Flux Cored Arc Welding (FCAW) process was used to fabricate the double "V" buttjoints. Welded joints were characterized on the basis of chemical composition analysis, hardnesstest and micro-structural analysis
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.580-582.655.pdf
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