조립형 CFT 기둥의 리브 길이에 따른 중심 압축 성능

초록

This study was conducted to examine the central compression performance of an assembled CFT column with a sawtooth rib inside. The experimental results of the assembled CFT column and the general square cross-sectional CFT column and the code (AISC, KDS) were compared to confirm whether the code was available. In addition, the influence of the sawtooth-shaped rib and the integrated behavior of the individual steel plates of the assembled CFT column without welding were analyzed. The assembled CFT column without welding had a larger ultimate axial strength than the existing square cross-sectional CFT column and did not significantly affect the stiffness. In addition, when the effective intensity was exceeded, there was no further increase in ultimate axial strength, and there was integral behavior equal to or greater than that of the welded square cross-sectional CFT column. Finally, after calculating the compressive strength of the assembled CFT column that was not welded, it was confirmed that the design formula of the general square cross-sectional CFT column was viable.

키워드