| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aseismic reinforcing device of a ceiling hang bolt capable of preventing a ceiling from being largely displaced vertically and laterally in a large earthquake, enabling the simultaneous screwing of a hanging bolt and a brace into an insert driven into a ceiling slab at the position manually accessible from a cradling surface so that a worker does not fall into a dangerous state during the construction, and capable of resisting a compression stress and a tensile stress in a ceiling board hanging device for hanging a ceiling board from a ceiling part such as the ceiling slab, a beam, or a girder through the hanging bolt. <P>SOLUTION: As shown in Fig. 1, a triangular structure is obtained by the hanging bolt reinforced by covering a steel pipe thereon, the brace harder to be deformed than the hanging bolt, and the ceiling slab. Each crest of the triangular structure is formed of the insert and two fittings. When the external force by an earthquake is applied to the triangular structure, the triangular structure resists it since it is not deformed. Since the brace is vertically divided so that only the upper brace can be mounted beforehand, a brace installation operation can be safely and easily performed. <P>COPYRIGHT: (C)2008,JPO&INPIT |
