Effect of the Simplifcation to Structural Systems on Nonliner Performance of Tall Buildings

In order to obtain correct nonlinear performance of tall building at seismic zone, several typical planar and elevation irregular tall buildings with different structural system are mainly discussed in the paper. Effect on the seismic response of structures due to the hazard bearing structure simplification are analyzed so as to obtain nonlinear performance accurately of structures for the seismic risk analysis, important influencing factors are also discussed followed. The results show that it is efficient to forecast the performance of tall buildings for the seismic risk analysis at seismic zone after Wen-Chuan Earthquake in China cities.