The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2007
Filed:
Oct. 07, 2004
Toru Takeuchi, Tokyo, JP;
Hiroshi Nakamura, Tokyo, JP;
Isao Kimura, Tokyo, JP;
Hisami Hasegawa, Tokyo, JP;
Eiichiro Saeki, Tokyo, JP;
Atsushi Watanabe, Tokyo, JP;
Toru Takeuchi, Tokyo, JP;
Hiroshi Nakamura, Tokyo, JP;
Isao Kimura, Tokyo, JP;
Hisami Hasegawa, Tokyo, JP;
Eiichiro Saeki, Tokyo, JP;
Atsushi Watanabe, Tokyo, JP;
Nippon Steel Corporation, Tokyo, JP;
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 bracewherein a steel-made center axial memberis passed through a buckling-constraining concrete memberreinforced with a steel member, and an adhesion-preventive filmis provided to the interface between the steel-made center axial member and buckling-constraining concrete, the adhesion-preventive film showing a secant modulus in the thickness direction of at least 0.1 N/mmbetween 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/mmbetween a point which shows a compressive strain of 50% and a point which shows a compressive strain of 75%, and having a thickness din the plate thickness direction of the steel-made center axial member and a thickness din 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.