Structural nonlinear performance of the 126-story, 632-meter tall Shanghai Tower has been studied for 2475-year return period seismic events through nonlinear time history analysis. Seven sets of ground motions were selected as representative of potential local seismic excitation and scaled to meet the provisions of China Seismic Code, GB50011-2001 (2008 version) and Shanghai Seismic Code, DGJ08-9-2003. A detailed and complex finite element model (FEM) of the structure was created within Perform 3D (2008), a widely used software program for nonlinear analysis and performance assessment of structures. Global behavior of the structure was checked to meet serviceability requirement. For performance acceptance criteria at the individual structural element level, GB50011-2001 and ASCE 41-06 "Seismic Rehabilitation of Existing Buildings" (2006) were used as major references. The nonlinear time history analyses confirmed acceptable global and local performances of Shanghai Tower as designed.
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