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吳永河，習會峰，李勝強，穆建春
（茂名學院建筑工程學院，茂名525000）[摘要] 通過對一個采用鋼框架結構進行增層的工程的振動特性、地震反應、樓層抗剪承載力等參數(shù)的分析研究，揭示了鋼框架增層對原結構的影響機理，同時判明了原結構需要抗震加固的部位，進而確定原結構的抗震加固方案。通過運用增大截面法及鋼支撐加固法，使增層結構的抗震性能滿足規(guī)范要求，闡明采用鋼框架增層是一種安全、經濟的增層方法。
[關鍵詞] 鋼框架；增層；抗震驗算；抗震加固設計Seismic strengthening design of steel-frame adding storey on concrete frame structure
Wu Yonghe, XiHuifeng, Li Shengqiang, Mu Jianchun
(Maoming University, Maoming 525000, China)Abstract: Vibration characteristics, seismic response, shear capacity and other parameters of a project with steel-frame structure adding storey were analyzed and studyed, the influence mechanism ofthe adding storey on the original structure was revealed. In the same time, in according with the parts of seismic strengthening, the reinforcement measures were confirmed. Through enlarging the section's method and the external steel-bracing method, the seismic performance of new structure can satisfy the standard requirement. In conclusion, using steel-frame adding storey is a safe and economic method.
Keywords: steel-frame; adding storey; seismic checking; seismic strengthening design
