Abstract
Main object of this study is to estimate the shape effects of internal hoops on ultimate capacity of the R/C column under biaxial bending. Nine specimens, each 300mm square by 1, 000mm high, containing either 8 or 12 longitudinal steel bars and different arrangements of square or octagonal steel hoops, were tested under uniaxial or biaxial eccentric loads.
From the results of the test and analysis, it is found that the analytical values calculated by Element Division Method agree well with that of experiments, and the formula proposed by Kent & Park is the most applicable to estimate the ultimate strength and ductility for biaxial bending.
