| The steel shear wall with slits is a new type shear wall. It has stable hysteresis loop and it can consume energy in earthquake. We can adjust its stiffness and shear bearing easily. Its fabrication and installation are simple and its arrangement is flexible. It is light and it can be constructed accurately and efficiently. It will be popular to use it in the steel constructions.As the existent engineering calculation soft ware can't perform the valid simulation, the calculation of structure is not carried out. The paper put out a calculation method of structural transition. Using principia of stiffness equivalent, it could be transformed to the bracing system so that the soft ware can calculate.First the formulas to estimate the stiffness and shear bearing are presented in this paper. The theoretical and simplified skeleton curves are also presented in this paper. And they will be checked by using the finite element soft ware ANSYS. The results have proved the correctness of the derived formula.Then using the principle of equivalent stiffness draws the sectional area equivalent formula.The different sizes of 6 kinds of steel shear walls convers 6 kinds of concentrically braces by the sectional area equivalent formula. And theirs lateral stiffness are very close by using the finite element soft ware ANSYS.Finally the use of project examples—using two support systems to analyse seismic force and seismic response of spectral response by two different support systems. It campares the max-stifness between the shear wall and the concentrically brace and theirs lateral stiffness are very close. So it is feasible that concentrically brace takes place of steel shear wall through the the comparison of the two different support systems.
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