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胡 斌，薛素鐸，宋彥杰，李雄彥
(北京工業(yè)大學空間結構研究中心，北京100124)[摘要] 基于風荷載數值模擬，對體育場挑篷結構進行時程分析，獲得結構風振響應。由于結構在風荷載作用下產生較大的振動，本文采用粘滯阻尼器對結構的風振響應進行控制。結果表明，設置粘滯阻尼器后，結構節(jié)點位移、加速度和桿件軸力都得到了明顯的控制，且豎向加速度控制效果明顯，可見粘滯阻尼器在大跨挑篷結構中的風振控制作用是顯著的。同時對粘滯阻尼器在挑篷結構中的減振控制進行了參數研究。
[關鍵詞] 體育場挑篷；風振控制；粘滯阻尼器Research on Wind-induced Vibration of Stadium Canopy Structures
Hu Bin, Xue Suduo, Song Yanjie, Li Xiongyan
( Beijing University of Technology, Spatial Structures Research Center, Beijing 100124, China)Abstract: Based on wind load numerical simulation, the wind-induced response of stadium canopy structures had been obtained by time-history analysis. Because the structures have large wind-induced vibration,the viscous dampers are used to control the wind-induced vibration. The result shows that the joint displacement and acceleration and the element axial force have apparent control effect especially vertical acceleration using the viscous dampers. It can be seen that the effect of the viscous dampers is remarkable in controlling the wind-induced vibration of the canopy structures. In the end, parametric studies for control performance of the viscous dampers in the canopy structures are carried out.
Keywords: canopy structur; wind-induced vibration control; viscous damper
