【摘要】 为了实现对结构抗震性能进行全面且有效评估，提出以多条强震地震记录下IDA方法获得到的平均层间剪力-位移曲线为判断依据，在统计意义上评价结构静力弹塑性分析各种侧力模式结果可靠性的校核方法。针对某6层规则钢框架工程实例，对比不同侧力模式的推覆分析结果，得出常见侧力模式的适用范围；并与大震作用下结构动力弹塑性时程分析得到的平均各层最大层间位移角作对比，校核不同侧力模式Pushover分析结果的有效性，得出对于以第一振型为主的中低层钢框架结构，底层宜采用均匀分布侧力模式，中部、上部楼层宜采用考虑高度或倒三角形侧力模式进行Pushover分析等结论，供结构抗震性能设计、评估、维修加固参考。更多还原

【Abstract】 In order to achieve a comprehensive and effective evaluation of the seismic performance of structures, a verification method is proposed to evaluate the reliability of various lateral force mode results in static elastoplastic analysis of structures in a statistical sense based on the average inter story shear displacement curve obtained by IDA method from multiple strong earthquake records. Based on a six story regular steel frame engineering example, compare the results of push over analysis of different lateral force modes and determine the applicable scope of common lateral force modes; And compared with the average maximum inter story displacement angle obtained from the dynamic elastoplastic time history analysis of the structure under the action of a large earthquake, the effectiveness of the Pushover analysis results of different lateral force modes was verified. It is suggested that for the middle and low rise steel frame structures with the first vibration mode as the main mode, the bottom layer should adopt a uniformly distributed lateral force mode, and the middle and upper floors should adopt a Pushover analysis mode considering height or inverted triangle lateral force mode for the structure. These conclusions provide reference for the seismic performance design, evaluation, maintenance and reinforcement of the structure.更多还原