中心圧縮力を受けるコンクリート充填円形鋼管短柱における拘束効果

抄録

Authors have already reported a method of elasto-plastic analysis of concrete filled circular steel tubular stub columns subjected to axial compressive load, which took account of the lateral interaction between steel tube and infilled concrete (so called as confinement effect). In this paper continuously, parametric studies by using this analytical method are conducted and influences of the parameters for the enhancement ratio of axial compressive strength are elucidated analytically. In addition, examinations of existing experimental data for the axial compressive strength are carried out. By combining these experimental results with the analytical results, a practical method of evaluating the confinement effects is proposed.