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BRACE MATERIAL FITTING STRUCTURE FOR SUSPENDED CEILING
PROBLEM TO BE SOLVED: To provide a brace material fitting structure having earthquake resistance against compressive force (twisting force), even if the compressive force (the twisting force) caused by swinging such as an earthquake is added to a brace material.SOLUTION: A brace material fitting structure comprises a connection plate 10 provided in an upper end part of a suspension bolt 3 suspended from an upper structure and an upper end part of a brace material 4 installed in a ceiling member, a pair of clamp materials 20 for holding the suspension bolt and the connection plate and provided with a cross-sectional circular arc-shaped groove part 21 on a surface abutting on the suspension bolt, a bolt 30 and a nut 40 for fastening the mutual clamp materials in a state of holding the suspension bolt and the connection plate. A radius of curvature of the groove part is formed smaller than a radius of curvature of the suspension bolt, and a clearance between the mutual clamp materials when the clamp materials hold the suspension bolt and an opening edge part of the groove part is brought into contact with the suspension bolt, is formed larger than a thickness of the connection plate. The mutual clamp materials are fastened by the bolt and the nut, and a screw part 3a of the suspension bolt is made to bite in both opening edge parts of the groove part.
【課題】地震等の揺れによる圧縮力（捻れ力）がブレース材に加わっても、圧縮力（捻れ力）に抗する耐震性を有するブレース材の取付構造を提供する。【解決手段】上部構造体から垂下される吊りボルト３の上端部と天井部材に架設されるブレース材４の上端部に設けられる接続プレート１０と、吊りボルトと接続プレートを挟持し、吊りボルトが当接する面に断面円弧状の溝部２１を設けた一対のクランプ材２０と、吊りボルトと接続プレートを挟持した状態でクランプ材同士を締結するボルト３０及びナット４０と、を備えるブレース材の取付構造であって、溝部の曲率半径を吊りボルトの曲率半径よりも小さくすると共に、クランプ材が吊りボルトを挟持して溝部の開口縁部が吊りボルトに接触した際のクランプ材同士の隙間を接続プレートの厚さよりも大きくし、ボルト及びナットによりクランプ材同士を締結して溝部の両開口縁部に吊りボルトのねじ部３ａを噛み込ませる。【選択図】 図４
BRACE MATERIAL FITTING STRUCTURE FOR SUSPENDED CEILING
PROBLEM TO BE SOLVED: To provide a brace material fitting structure having earthquake resistance against compressive force (twisting force), even if the compressive force (the twisting force) caused by swinging such as an earthquake is added to a brace material.SOLUTION: A brace material fitting structure comprises a connection plate 10 provided in an upper end part of a suspension bolt 3 suspended from an upper structure and an upper end part of a brace material 4 installed in a ceiling member, a pair of clamp materials 20 for holding the suspension bolt and the connection plate and provided with a cross-sectional circular arc-shaped groove part 21 on a surface abutting on the suspension bolt, a bolt 30 and a nut 40 for fastening the mutual clamp materials in a state of holding the suspension bolt and the connection plate. A radius of curvature of the groove part is formed smaller than a radius of curvature of the suspension bolt, and a clearance between the mutual clamp materials when the clamp materials hold the suspension bolt and an opening edge part of the groove part is brought into contact with the suspension bolt, is formed larger than a thickness of the connection plate. The mutual clamp materials are fastened by the bolt and the nut, and a screw part 3a of the suspension bolt is made to bite in both opening edge parts of the groove part.
【課題】地震等の揺れによる圧縮力（捻れ力）がブレース材に加わっても、圧縮力（捻れ力）に抗する耐震性を有するブレース材の取付構造を提供する。【解決手段】上部構造体から垂下される吊りボルト３の上端部と天井部材に架設されるブレース材４の上端部に設けられる接続プレート１０と、吊りボルトと接続プレートを挟持し、吊りボルトが当接する面に断面円弧状の溝部２１を設けた一対のクランプ材２０と、吊りボルトと接続プレートを挟持した状態でクランプ材同士を締結するボルト３０及びナット４０と、を備えるブレース材の取付構造であって、溝部の曲率半径を吊りボルトの曲率半径よりも小さくすると共に、クランプ材が吊りボルトを挟持して溝部の開口縁部が吊りボルトに接触した際のクランプ材同士の隙間を接続プレートの厚さよりも大きくし、ボルト及びナットによりクランプ材同士を締結して溝部の両開口縁部に吊りボルトのねじ部３ａを噛み込ませる。【選択図】 図４
BRACE MATERIAL FITTING STRUCTURE FOR SUSPENDED CEILING
吊り天井用ブレース材の取付構造
YANAGIMOTO TOSHIO (author)
2015-11-19
Patent
Electronic Resource
Japanese
IPC:
E04B
Allgemeine Baukonstruktionen
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GENERAL BUILDING CONSTRUCTIONS
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