シマザキ カズシ   Shimazaki Kazushi
  島﨑 和司
   所属   神奈川大学  工学部 建築学科
   職種   教授
言語種別 日本語
発行・発表の年月 2009/04
形態種別 学術雑誌
査読 査読あり
標題 中央部に鋼材ダンパーを有するRC境界梁に関する実験的研究,
低降伏点鋼を用いた境界梁ダンパーに関する研究 その1
執筆形態 共著
掲載誌名 日本建築学会構造系論文集
巻・号・頁 (NO.638),755-763頁
著者・共著者 熊谷仁志,島崎和司,林 静雄
概要 RC shear walls coupled with beams are becoming widely used for high-rise buildings in Japan. Since short-span coupling beams are subjected to large displacement during an earthquake, high ductility and excellent energy absorption performance are required.
RC coupling beams with low-yield-point steel damper in the mid-span (coupling beam damper) have been developed and experimentally investigated in this study. Steel dampers in the mid-span are embedded into the RC beams at the both ends, and embedded lengths are ranging from 2 to 3.5 times as long as steel depth.
The coupling beam dampers provide the stable hysteretic performance up to 1/20 of drift angle, and equivalent damping coefficients of 20 to 30%. Sufficient amount of shear reinforcement needs to be arranged, so as to transfer shear force from steel damper to RC beams. Shear reinforcements are more effective when arranged in the tip of RC beams.