芯コンクリートを有する鉄筋コンクリート柱の変形特性

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This paper describes the ductility of normal RC column and new system of RC column (called CRC column) with core concrel confined thin steel spiral tube, reversed cyclic lateral loading under the varying axial load. Four specimens are two normal RC columr and two CRC columns. The varying axial loads used here are two type of 0.3Fc〜0.3Agσy and 0.6Fc〜0.6Agσy. We gave proof the the CRC column have a higher ductility more than normal RC column, Comparing with the restoring force characteristics, strain-horizontal deformation relationship, and crack condition from the experimental results. Normal RC column under the varyin axial load of ±0.3 collapsed in 1.5%rad, As soon as the diagonal crack perforated RC section happen to center of specimen lengtl Mother RC column collapsed in 1.0%rad in the same box. The CRC column under the varying axial load of ±0.3 carried on th capacity held a limit axial load in 4.0%rad with a lot of small shear crack. Another CRC column took on same condition, too.
一般社団法人日本建築学会の論文
2007-03-20