Abstract: Under low cyclic loading,6 interior frame nodes of Z-shaped concrete columns with 1 /2 scale were tested.The fracture morphology of frame nodes of Z-shaped columns was obtained.The limits of shear capacity of frame node core zone were measured,and the check values of shear capacity of node core zone were calculated by the formulas in current related standards.Through the analysis of comparison between test values and standard calculation values,the deviations of shear capacity of node core zone of Z-shaped columns calculated by current standard were obtained.The conclusion may be a reference for the design and calculation of Z-shaped concrete columns in practical projects．