Taek-Hee Han

Behavior of Internally Confined Hollow RC Columns

Dept. of Civil Engineering, Sunmoon University, Asan 336-708, KoreaABSTRACT A nonlinear column model of an internally confined hollow (ICH) reinforced concrete (RC) column was suggestedand a parametric study was performed. The suggested column model considered the confining effect and the material nonlinearityof concrete. To verify the suggested column model, its analysis results were compared with the test results from previous research-ers and a quasi static test performed in this study. They showed that the suggested column model was reasonable and had accepta bleaccuracy. The results from parametric studies showed that the thickness of the internal tube, concrete strength, and the hollow ratioof the ICH RC column affected its behavior.Keywords : column, composite, nonlinear, hollow, confining effect