Abstract
Following remarks are attained by beam-column tests of SRC columns whose steel element is pin-connected by anchor bolts at base. 1) Steel element and reinforced concrete element which compose SRC column work in a body until the flexural crack occur at base of column, but they work separately thereafter. 2) The inflection points of steel element and concrete element coincide approximately until the maximum strength of SRC columns. 3) The flexural cracking strength at the bese of column can be estimated by Eq. (1) by considering the model shwon in Fig.7, and the shear cracking strength at the base of column can also be estimated by Eq. (4) as well as Reinforced Concrete columns. 4) The flexural yield and maximum strength of the base of SRC columns can be estimated by considering the section shwon in Fig. 7 with the theory based on the Navier's assumption. The superposed flexural strength somewhat overestimates the flexural yield strength, but can estimate the flexural maximum strength.
