The mass center of the roof in building frames is usually considered as a target point when a nonlinear static (pushover) analysis needs to be carried out. In the present study, 12 steel frames with 7, 15 and 30 stories as well as 5 and 7 spans equipped with steel plate shear wall (SPSW) as the lateral load-resisting system, were modeled numerically and displacement capacity spectrum was extracted based on two energy methods without need to consider the target point. In addition, two-dimensional steel frames had rigid or pinned connections and all of them were analyzed aiming to compare capacity spectra of the models including different stories. The results demonstrated that the displacement capacity spectrum obtained using the energy methods had good compatibility with each other. In conclusion, it was found that compared to the displacement capacity spectrum where the mass center of the roof was considered as a target point, there is an acceptable agreement between the displacement capacity spectrum with the target point in the first mode and displacement capacity spectrum obtained using two methods without the target point.

当需要进行非线性静态（推动）分析时，通常将建筑物框架中屋顶的重心视为目标点。在本研究中，对12个7层，15层和30层，以及5层和7层跨度的钢框架进行了数值模拟，并采用钢板剪力墙（SPSW）作为侧向抗力系统，并基于该模型提取了位移能力谱。两种能量方法无需考虑目标点。此外，二维钢框架具有刚性或销钉连接，并对其进行了分析，目的是比较模型（包括不同层）的容量谱。结果表明，采用能量法得到的位移容量谱具有良好的相容性。结论，