コンクリート充填鋼管柱の一定軸力下における繰り返し曲げ性状

概要

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In seismic design against large earthquakes, structural members are allowed to perform inelastic behavior in order to absorb the large energy. In these case, to prevent collapse of the buildings under earthquake excitation, it is important that the cyclic load-deformation relationships are investigated. An experimental study was carried out on the 12 circular specimens and 18 square specimens to investigate the cyclic bending behavior of concrete filled steel tubular (CFT) columns. The experimental load-deformation hystereses are compared with those of the elasto-plastic analysis based on the proposed stress-strain relationships established for the filled concrete and for the steel tube. The analytical results show good agreement with the test results for all specimens. This implies that the proposed stress-strain relationships for CFT beam-columns are useful to predict the characteristics of the filled concrete and the steel tube.
社団法人日本建築学会の論文
2003-06-30