| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a string beam which facilitates design of a junction between an upper chord member and a lower chord member and also can suppress breakage in a junction. <P>SOLUTION: A string beam 1 comprises: an upper chord member 10 which consists of an H-shaped steel and in which an upper flange 12 and a lower flange 13 are arranged on and under a web 11 vertically extended, respectively; a lower chord member 22 consisting of a flat steel and bonded to each of both end parts of the upper chord member 10 by a junction 30; and a strut 25 for connecting the upper chord member 10 and each lower chord member 22 at an intermediate position in the axial direction. An axial end part 24 of the lower chord member 22 is linearly formed between an end part 30a on the beam end side of the junction 30 and a first strut 25, and the lower surface of the upper chord member 10 in the junction 30 is formed as an inclined surface 17 along a material axis direction of the lower chord member 22 (the axial end part 24) in a side view from a direction perpendicular to the axis of the upper chord member 10. <P>COPYRIGHT: (C)2013,JPO&INPIT |
