二重鋼管合成短柱の圧縮特性に関する実験的研究

上中 宏二郎, 鬼頭 宏明, 園田 恵一郎

doi:10.11273/jssc1994.14.67

二重鋼管合成短柱の圧縮特性に関する実験的研究

DOI

上中宏二郎

神戸市立工業高等専門学校都市工学科
鬼頭宏明

大阪市立大学大学院工学研究科都市系
園田恵一郎

大阪市立大学

書誌事項

タイトル別名

Experimental Study on Short Concrete Filled Double Steel Tubular Columns under Compression

説明

Concrete filled double steel tubular columns (CFDT in abbreviation) consist of two centric steel tubes and filled concrete between them. By the arrangement of inner tube, the own weight can be reduced in comparison with ordinary concrete filled steel tubular members. Centric loading tests on twelve specimens of CFDT were carried out. Observed failure mode was local buckling of both tubes associated with shearing failure of concrete. Axial strength of CFDT were agreement with or larger than accumulative equation consisting of two steel tubes and filled concrete. However, the larger inner-to-outer diameter's ratios, yield the smaller axial lnadinu canacities. Moreover. empirical equation of axial strength of CFDT was proposed.