Buckling restrained braces and damping steel structures

Details Buckling restrained braces and damping steel structures Buckling restrained braces and damping steel structures

2007-06-19

2007-06-19

Slack, Naoko (Department: 3635)

Static structures (e.g., buildings)

Means compensating earth-transmitted force

Cross bracing

C052S167100, C052S749100, C052S749100, C052S223400, C052S223140

Reexamination Certificate

active

10961007

ABSTRACT:
The present invention relates to a buckling restrained brace capable of absorbing vibration energy produced by an earthquake, wind power and the like, in a building and a steel structure.The buckling restrained brace of the present invention is accomplished by a buckling restrained brace1wherein a steel-made center axial member3is passed through a buckling-constraining concrete member2reinforced with a steel member6, and an adhesion-preventive film4is provided to the interface between the steel-made center axial member and buckling-constraining concrete5, the adhesion-preventive film showing a secant modulus in the thickness direction of at least 0.1 N/mm2between a point which shows a compressive strain of 0% and a point which shows a compressive strain of 50%, and up to 21,000 N/mm2between a point which shows a compressive strain of 50% and a point which shows a compressive strain of 75%, and having a thickness dtin the plate thickness direction of the steel-made center axial member and a thickness dwin the plate width direction thereof from at least 0.5 to 10% of the plate thickness t and from at least 0.5 to 10% of the plate width w, respectively, and by the application of the buckling restrained brace to a damping steel structure.

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Seismic Rehabilitation of a Four Story Building With a Stiffened Bracing System, 8thCanadian Conference On Earthquake Engineer, 1999, Tremblay et al.

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