DOME TRUSS MADE OF ALUMINUM ALLOY

摘要

PROBLEM TO BE SOLVED: To reduce a member cost per unit area (m2) by reducing the number of members as a result of allowing the increase of a triangular lattice rate (grid) in the case of a structure of using an H-shape as a lattice structure member constituting a dome, and sticking an aluminum alloy panel as a roof face material. SOLUTION: The H-shape of large cross-sectional shape formed by carrying out friction agitation welding of a T-shaped extruded shape 13 at a portion of a web 13a by a friction agitation welding method, is used as a strut 8 serving as a lattice structure member forming the dome, and the aluminum alloy panel 10 of truss shape is stuck as the roof face material. COPYRIGHT: (C)2007,JPO&INPIT