- 摘 要
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(南京工業(yè)大學土木工程學院,南京 210009)
[摘要]設計了三榀不同類型的鋼框架結構模型,通過對模型的快速水平周期加載試驗,進行了設置粘滯阻尼墻鋼框架結構減振性能的比較和分析。對設置阻尼墻后鋼框架結構的破壞形態(tài)、滯回特性、骨架曲線、阻尼力、抗剪剛度、耗能性能、等效阻尼比等進行了研究,對阻尼墻不同布置方式對上述各項性能的影響進行了分析,并對上述各項性能與加載頻率、位移幅值的變化關系進行了探討。結果表明,設置阻尼墻后,鋼框架結構的耗能能力和阻尼均有顯著提高,結構的抗剪剛度增加,結構的地震響應顯著減小。設置阻尼墻鋼框架結構的滯回特性與頻率、位移幅值相關。阻尼墻不同布置方式對結構滯回特性的影響不明顯。
[關鍵詞]粘滯阻尼墻;水平動態(tài)試驗;鋼框架結構;抗震性能
中圖分類號:TU352,TU391文獻標識碼:A文章編號:1002-848X(2012)03-0061-04
Research on energy-dissipating performance of steel frame structure with viscous damping wall
Ou Jin,Wang Xiangzhi(College of Civil Engineering, Nanjing University of Technology, Nanjing 210009, China)
Abstract:Three different types of steel frame models were designed. By experiments on the steel frame models under lateral dynamic load, the performances of the steel frames with and without viscous damping wall were compared and analyzed. The failure mode, hysteresis loop, skeleton curve, damping force, sheer rigidity, viscous behavior, equivalent damping ratio of the models were studied. The influences of above parameters under difference locations of damping walls were analyzed, and the relations between above parameters and frequencies and displacements were discussed. Experimental study results show that the energy-dissipating capacity, damping force and sheer rigidity can be greatly improved after the installation of viscous damping wall. The seismic response of the frame is obviously decreased. The hysteresis characteristics are relevant to frequency and displacement. The location of the wall has little influence on hysteretic characteristics.
Keywords:viscous damping wall;lateral dynamic experiment;steel frame structure;seismic behavior
* 江蘇省自然科學基金項目(BK2000101)。
作者簡介:歐謹,博士,副教授,Email:oujin@njut.edu.cn。
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