ASEISMATIC REINFORCING STRUCTURE OF OPENING IN EXISTING RC RIGID FRAME STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide an aseismatic reinforcing technology for an opening part in an existing RC rigid frame structure being effective for reducing cost of materials and volume of construction work, achieving uniform deformation in a deformation part for external force such as earthquake, and absorbing energy smoothly and efficiently.;SOLUTION: In this aseismatic reinforcing structure, pieces of vibration control reinforcing hardware 4 forming both sides as mounting parts and bending an intermediate part like bellows to form the deformation part are attached to four corners of a steel frame 3 like a rectangular frame being mountable in the opening part 2 of an existing RC rigid frame structural body 1 through the mounting parts, respectively, and the opening part 2 is reinforced by the pieces of vibration control reinforcing hardware 4 attached to four corners of the steel frame 3 like the rectangular frame in an aseismatic manner. The deformation part in the intermediate part of the vibration control reinforcing hardware 4 is alternately bent to form bellows. An angle of bending in each bent part is substantially constant over the whole length of bending line, and height of each bent part is gradually increased from sections close to the corner parts toward an outer side.;COPYRIGHT: (C)2011,JPO&INPIT