| 摘要 |
PROBLEM TO BE SOLVED: To provide a suspended ceiling backing structure capable of effectively transmitting horizontal stress generated by an earthquake to a structural skeleton.SOLUTION: A suspended ceiling backing structure 10 comprises a ceiling joist 11 and a ceiling joist receiver 12 arranged in a lattice shape, a suspension bolt 15 for suspending-holding the ceiling joist receiver 12 by a structural skeleton 14, a suspension metal fitting 34 for connecting the ceiling joist receiver 12 and the suspension bolt 15, a brace material 21 in the ceiling joist receiver direction and a brace material 22 in the ceiling joist direction. The lower end side of the brace material 22 in the ceiling joist receiver direction is connected to a connection material 23 orthogonally arranged on a plurality of ceiling joist receivers 12. The ceiling joist receiver 12 and the connection material 23 are connected by a connection metal fitting 32. The lower end side of the brace material 21 in the ceiling joist direction is connected to the ceiling joist receiver 12. An upper end part of the brace materials 21 and 22 is connected to an upper end part of the suspension bolt 15 by a brace connection metal fitting 24 in a state of contacting with he structural skeleton 14. |
