Because of the SRC column are difficult to construct and the high cost

the new SRC crosssection of distributed steel bar with low cost is proposed based on the principle of which the same core steel ratio.The two types columns has been validated similar mechanical properties by the preliminary tests

and more indepth study of the seismic performance of this new crosssection column is presented. Considering the nonlinearity of the materials and the appearance of

P-Δ

analysis models of SRC of distributed steel bar core section with FEMs software are built. Parameters of axial compression ratio

the core steel ratio

the strength of concrete and core steel bar which influence the P-Δ curves

horizontal ultimate load and ductility coefficients were analyzed for further study of the new SRC section. The conclusion is as follows: the horizontal ultimate load of new SRC crosssection of distributed steel bar was obvious influenced by the axial compression ratio and strength of concrete and less affected by the core steel ratio and the strength of the core steel bar; ductility coefficients which was obvious influenced by many factors is a sensitive indicator.