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李 鋼，李宏男
（大連理工大學海岸及近海工程國家重點實驗室，大連 116023）[摘要] 分別對框架結(jié)構(gòu)中安裝耗能減震裝置前后進行了水平地震作用的推覆分析，揭示了由于耗能支撐的安裝使框架柱軸力明顯增加這一現(xiàn)象。這種軸力的增加，可能會超過柱軸力設計允許值。提出了驗算耗能支撐帶給框架柱附加軸力的計算方法及驗算過程，同時改進了耗能減震結(jié)構(gòu)的設計流程，使得耗能減震技術(shù)進一步完善。數(shù)值算例揭示了耗能支撐的安裝對框架柱軸力的影響，軸壓比過大引起框架柱延性降低，柱端過早出現(xiàn)塑性較，設計中應引起足夠的重視。
[關鍵詞] 耗能減震裝置；耗能結(jié)構(gòu)；框架柱；軸力Study on influence of column axial force on the dissipative bundings
Li Gang，Li Hongnan
(State Key Laboratory of Costal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China)Abstract: A steel frame with and without dissipative devices subjected to horizontal earthquake-force was calculated by SAP2000-NL software. Increase on axial force of the column was discovered due to the dissipative devices fitted in the frame. Calculated and verified method about the axial force of the column were presented. A new design procedure was perfected. Simulated example gave an explanation on the influence of column on the dissipative buildings.
Keywords: dissipative device; dissipative building; column; axial force
