| Nonlinear static procedure (NSP) has attracted the attention of more and more researchers for its merits of practicality. It has become one of checking computations tools for nonlinear distortion.Design procedure and analysis method of structure in earthquake are firstly introduced in this thesis. Then introduced the nonlinear static analysis of the research and development status, and introduced several kinds of static elastic-plasticity analysis method which was representative, This paper also introduced several kinds of static elastic-plasticity analysis method which was representative, and point out their disadvantages: this approach to a large extent ,dependent on the level of load distribution, but was considered the mode correspond to the role of the earthquake,ignored the high mode.In practice, the high-rise building,the structure of the displacement vector is a multistage mode of co-decision. In particular, the long-period strcture, the hige mode of the structure of the seismic effect can not be ignored.The high model is very important to the static pushover analysis. Especially in the high-rise structure .The option of the high model will effect the result of static Pushover analysis directly. This thesis introduces and improves the modal pushover analysis method. In the method, the consideration of the appropriate selects of reasonable numbers of modes and adoption of the basic principles of the type modal decomposition method and the elastic-plastic response spectra considering strength reduce coefficient make the analysis results even near the actual performances of structures in big earthquake.By making use of the finite element analysis program SAP2000 and ETABS, makes dynamic time history analysis ,Pushover analysis and Modal Pushover analysis on two high-rise RC building .The research results revealed that the adoption of static-plastic analysis method in this paper to conduct a Pushover analysis on structures can possesses high-accuracy calculation.
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