VIBRATION CONTROL STRUCTURE OF INTERMEDIATE OR LOW BUILDING AND ITS APPLICATION METHOD

摘要

PROBLEM TO BE SOLVED: To prevent application of an excessive force to a periphery of a predetermined rectangular part by providing the rectangular part for a steel skeleton, and providing this rectangular part with a surface joint portion that keeps a rigid contact when a force in a traffic vibration range is applied and becomes into a movable state when a force larger than this force acts thereon. ;SOLUTION: A solid lubricating treatment is applied to movable treating portions 3d on both surfaces of a plate portion 3b of a gusset plate 3 as a surface joint portion of a rectangular part A and a movable treating portion 5b on one surface of a movable spacer 5, and a fastening torque of a high pressure bolt 7 is defined to set a proof stress of the movable treating portions 3d and the movable treating portion 5b to about 100 kgf. On the surface joint portion of the rectangular part A, a movable frictional force in transition of this rectangular part A to the movable state is set to about 500 kgf. Thus, the frictional force on the surface joint portion of the rectangular part A keeps the rigid contact for a micro vibration such as a traffic vibration, and the rectangular part A transmits to the movable state when a force stronger than a traffic vibration range acts by an earthquake or the like to provide a flexible structure that does not load the proof stress.;COPYRIGHT: (C)2001,JPO