| 摘要 |
A steel section has a protuberance which rests on the outer circumferential surface of a framework panel concrete. A first short flange rests on the inner side of the panel. A second, long flange extends perpendicular to the framework panel and has a shallow V-shaped indentation. A third, short, flange lies parallel to the framework panel and a fourth flange continues to the protuberance. The third flange consists of two part-flanges butt-welded and flush-machined on the outer surface. The protuberance has three walls. The second, short, wall is parallel to the framework panel. The third wall is bent back to the first wall at an acute angle. The corner angle between the first flange and the third wall is less than 90 degrees.
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