ANSYS Based On The Seismic Performance Of High-rise Buildings Model

The performance-based seismic design theory has been developed gradually.Currently many countries has developed the seismic performance evaluationspecification for performance-based buildings, such as specifications: FEMA-273,FEMA-274, FEMA-346, FEMA-445and ATC-40, ATC-58etc., formulated by theUnited States Association of Applied Technology (ATC) and the Federal EmergencyManagement Agency (Federal Emergency Management Agency, FEMA). This papermakes a detailed explanation of the performance-based seismic design theory,emphasizes the relevant provisions of building structural element seismicperformance reference index in <code of a seismic design of buildings> which ourcountry is implementing, then does ANSYS finite element model-based simulationand modal analysis, spectrum analysis, nonlinear seismic time history analysis to thestructure of a35-floor performance-based framed barrel, especially nonlinear timehistory analysis of the structure. According to the Chinese national standardGB50011-2010, select proper seismic waves: Shanghai artificial wave3, BorregoMountain wave and San Fernando wave in the cases of7degree earthquake (peakacceleration is adjusted to35cm/s~2), basic earthquake (peak acceleration is adjusted to100cm/s~2) and rare earthquake cases (peak acceleration is adjusted to220cm/s~2), anddo nonlinear time history analysis to them. The Shanghai artificial wave sets the maininput as in X and Y direction to do one-way input respectively, while the Borrego hillwave and San Fernando wave set the main input as in two horizontal directions to dothree-dimensional input in proportion as1:0.85:0.65. Comparing the maximuminter-story displacement angle and the maximum floor shift values under varioussituations with the limits of elastic inter-story displacement angle which are restrainedin specification, the results meet standardized requirements.