正方形鋼管横補強鉄筋コンクリート柱の耐震性能 : その1 高軸力下における柱の繰り返し曲げせん断性状

概要

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An integrated theoretical and experimental research on the earthquake-resisting performance of the reinforced concrete columns confined by square steel tube is described. As the first part of the research, this paper presents experimental information on the earthquake-resisting performance of reinforced concrete columns confined by square steel tubes under high axial load. Thirteen square columns with high longitudinal reinforcement ratios of 3.84% and 7.68% were tested under reversed cyclic lateral load and constant axial load. It has been shown that square columns without adequate transverse detailing could be made to exhibit stable flexural response under such high axial load as the axial load ratio n=1.1 when confined by steel tubes. Square columns, only whose potential failure regions were confined by steel tubes, also exhibited very stable seismic response in a manner similar to columns which were totally confined by steel tubes
社団法人日本建築学会の論文
1997-11-30