Basic Experimental Studies on Buckling Strength of Carbon Steel Circular Short Column Subjected to Axial Compressive Load : In Case of an Eccentric Cylindrical Cavity

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This paper is concerned with an axial compression experiment of the carbon steel circular column with an eccentric cylindrcial cavity in a short column range, supported between spherical seats. It was found that the buckling stress decreased as increasing of the cylindrical cavity ratio d/D and eccentricity ratio of cylindrical cavity e/R. An emprical formula for calculating axial compressive buckling stress "σ_<crhe>" of carbon steel circular column with an eccentric cylindrical cavity is presented as follows; σ_<crhe>/σ_<crh>=1/(1+a) σ=1.22{4(d/D)^2(e/R)}^<1.33> where σ_<crh>=axial compressive buckling stress of carbon steel circular column with an concentric cylindrical cavity, d=diameter of cylindrial cavity, D=diameter of circular column, e=eccentricity of cylindrical cavity, R=radius of circular column (R=D/2). The measurement reveals that the results calculated by this formula are in good agreement with those obtained experimentally for the short column range.
東海大学の論文