Lateral vibration properties of multilayer elastomeric bearing.

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type 01 Jan 1991 Japanese Publisher:Society of Rubber Industry, JapanJournal:NIPPON GOMU KYOKAISHI, volume 64, pages 201-209 (issn: 0029-022X, eissn: 1884-0442,

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Authors: Takashi AKASAKA; Atsushi HASEGAWA; Mami KOBARI;

doi: 10.2324/gomu.64.201

Lateral vibration properties of multilayer elastomeric bearing.

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Abstract

免震積層ゴムは, 薄いゴム層と鉄板とを交互に重ね合わせた柱状の複合構造体で, 地震動に対する建物の揺れを防ぐために開発されたものである. 筆者らは, この固有振動数と振動モード, 及び地震動に対する建物の振幅比に関する伝達関数について解析を行った.この解析では, 免震積層ゴムの構成を均質な材料特性をもつ短柱と見做し, 一様な曲げ-せん断剛性及び回転慣性を考慮した. 一般に固有振動数は, 軸圧縮力の増加するにつれて減少する. 座屈荷重は1次固有振動数がゼロとなったときの圧縮力として求められる. 実験例について計算した1次固有振動数と圧縮力との関係は実験結果とよく一致した.

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