薄肉鋼管で横補強した鋼・コンクリート合成柱材の弾塑性性状に関する研究

概要

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The authors have investigated the elastic-plastic behavior of steel and concrete composite column encased cruciform steel and covered by thin steel tube. It was already made to clear that the composite columns showed large earthquake resistant properties, owing to strength and ductility of concrete confined by encased steel. In order to make clear the stress-strain relationship of confined concrete, an axial compression test of the composite columns was carried out. In this paper the following mentions are discussed. From the axial compression test results and an analysis, evaluation of the strength and stress strain relationship of confined concrete was supposed. Then an elastic plastic analysis of the composite column taken account of the confining effect of the concrete was studied, and it was made to clear that the analytical results pursued the experimental behavior of the composite columns. And also limit axial load of the composite columns was analytically studied, it was made to clear that the composite column under cyclic horizontal load sustained large axial load, and the sustainable limit axial load was taken (17) formula, as a equals to 1/2.
一般社団法人日本建築学会の論文
2011-03-25