Dissimilar joint, structure support member and LNG vessels, as well as dissimilar method of manufacturing a joint

摘要

Hull (2) and the structure fabricated by the dissimilar metal dissimilar joint applied to the structure supporting member that supports (5) (4) (10), first to be bonded to the hull side member (6) It comprises a joint member (11) and a second joint member that is friction stir welded to the fillet welded to the structural member (7) and the first joint member (11) (12). The first bonding surface of the first joint member (11) and (14) second second joint surface of the joint member (12) and (15), but in surface contact with each other by a substantially flat form, the two joint members ( 11, 12) are joined to one another in the friction stir joining portion of the plurality of rows extending in the longitudinal direction and arranged in the width direction (21). A pair of fillet welds (23), from the side of the structural member (7) (20), and the second bonding surface (15) disposed over the welding surface of the opposite side (16). Each fillet weld (23), when viewed in the normal direction of the second bonding surface (15) is arranged to at least one overlap of the friction stir joining portion (21).