Abstract:Axial compression experiment for the bonded SMA actuating concrete column, semi bonded SMA actuating concrete column, unbonded SMA actuating concrete column, bonded SMA unactuating concrete column and concrete column with same concrete mix proportion were carried out. The axial compression properties of five groups of concrete column, including longitudinal strain, transverse strain, limit load and crack resisting load were compared. The results indicate that crack resistance of SMA concrete columns progressively decreases in the sequence of semi bonded SMA actuating concrete column, bonded SMA actuating concrete column, unbonded SMA actuating concrete column and bonded SMA unactuating concrete column. The limit load of SMA concrete columns are approximately equal, and greater than that of concrete columns. Semi bond between SMA spiral stirrup and concrete column will favor that SMA spiral stirrup induces the prestress on concrete column. SMA spiral stirrup can be utilized to induce the larger prestress on concrete column,and finally to realize the deformation control for concrete.