Development of high-performance BRRP dampers for bridge structures

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H04035
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Nagoya Industrial Science Research Institute
• Principal Investigator: Usami Tsutomu 公益財団法人名古屋産業科学研究所, 研究部, 上席研究員 (50021796)
• Co-Investigator(Kenkyū-buntansha): 葛 漢彬 名城大学, 理工学部, 教授 (90262873)
• Co-Investigator(Renkei-kenkyūsha): WATANABE KOUICHI 名城大学, 理工学部, 准教授 (90387762)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 制震ダンパー / 波形鋼板 / 鋼桁橋 / 性能実験 / 低サイクル疲労 / 数値解析

Outline of Final Research Achievements

New seismic dampers termed Buckling-Restrained Rippled Plate (BRRP) dampers have been developed. BRRPs are intended to be used as stoppers, and when they are installed at the edges of girder-type bridges, they will act as stiff elastic bearings in small to moderate earthquakes (Level 1 earthquakes) and as energy dissipating dampers in large earthquakes (Level 2 earthquakes). The target performances of BRRPs are such that they can withstand three consecutively acting Level 2 earthquakes as well as earthquakes exceeding Level 2 earthquakes (say, 1.5 times larger than a Level 2 earthquake). The inelastic behavior of BRRPs was investigated using cyclic and pseudo-dynamic loading tests, in addition to numerical analyses, to acquire fundamental knowledge on their performances. It has been found that adequately designed BR

Free Research Field

構造工学