抗震性能包括对结构低阶自振周期、顶点位移、最大层间位移角、框架承担承担水平地震剪力、框架承担地震倾覆力矩比几个方面。
The main seismic performance is introduced, including low level period, top displacement, maximum layer displacement Angle, frame bearing horizontal shear, frame bearing earthquake overthrow moment.
二阶效应增大了结构的顶点位移最大值和层间位移角最大值，减小了结构的基底剪力最大值。
The second order effects enlarge the requirement of top displacement and story drift and diminish that of base shear.
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