67 引張力を受けるコンクリート充填円形鋼管柱の拘束効果

概要

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When concrete filled circular steel tubular columns are subjected to axial tensile force, lateral contraction of tube is restrained by infilled concrete. Consequently hoop tensile stresses are induced in the steel tube, therefore the longitudinal tensile strength is enhanced. This phenomenon is one of the merits of concrete filled circular steel tubular column, however has been scarcely discussed until now. In this paper, analytical method to predict the tensile behavior of the columns is reported, and verified by existing experimental results. Based on the analytical results, tensile stress at yield and ultimate states of tension side of concrete filled circular steel tubes subjected to bending moment and axial compression are estimated, and examined by our experimental results on the columns under such loading condition.
一般社団法人日本建築学会の論文
1997-03-20