PROBLEM TO BE SOLVED: To provide weld assembly H-section steel suitable for use in a beam member in a construction field.;SOLUTION: The weld assembly H-section steel is used as a beam in a beam-column connection part for connecting a steel pipe column and the beam, and the weld assembly H-section steel has a projection part projecting more to an outer side than a web at an end part of at least one of upper and lower flanges. The projection part has a shape to be bilaterally symmetrical to the web, and has a notched part to be fitted to a part of an outer periphery of the steel pipe column on a material end side. The notched part is fitted to the steel pipe column from a position at which an end of the web is in contact with the steel pipe column at the projection part, and a part surrounding the notched part at the projection part has a shape forming an outer diaphragm of the beam-column connection part when the notched part is fitted to the steel pipe column.;COPYRIGHT: (C)2013,JPO&INPIT
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