体育场挑篷结构风振控制研究
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摘要
基于风荷载数值模拟,对体育场挑篷结构进行时程分析,获得结构风振响应。由于结构在风荷载作用下产生较大的振动,本文采用粘滞阻尼器对结构的风振响应进行控制。结果表明,设置粘滞阻尼器后,结构节点位移、加速度和杆件轴力都得到了明显的控制,且竖向加速度控制效果明显,可见粘滞阻尼器在大跨挑篷结构中的风振控制作用是显著的。同时对粘滞阻尼器在挑篷结构中的减振控制进行了参数研究。
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.
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.
引文
[1]顾明,朱川海.体育场主看台弧形挑篷风振响应分析的极坐标法[J].振动工程学报,2005,18(4):443-447.
[2]朱川海,顾明.大型体育场主看台挑篷抗风研究现状及展望[J].空间结构,2005,11(2):27-33.
[3]薛素铎,宋延杰,等.基于风速时程的体育场挑篷结构风振响应分析[J].地震工程与工程振动,2007,27(5):61-65.
[4]宋彦杰.体育场挑篷结构风荷载数值模拟及风振控制研究[D].北京:北京工业大学,2007.
[5]刘锡良,体育场挑篷结构综述[C]//第十届空间结构学术会议论文集,2002:87-98.
[6]汪大洋,周云,等.粘滞阻尼减震结构的研究与应用进展.[J].工程抗震与加固改造.2006,28(4):22-31.
[2]朱川海,顾明.大型体育场主看台挑篷抗风研究现状及展望[J].空间结构,2005,11(2):27-33.
[3]薛素铎,宋延杰,等.基于风速时程的体育场挑篷结构风振响应分析[J].地震工程与工程振动,2007,27(5):61-65.
[4]宋彦杰.体育场挑篷结构风荷载数值模拟及风振控制研究[D].北京:北京工业大学,2007.
[5]刘锡良,体育场挑篷结构综述[C]//第十届空间结构学术会议论文集,2002:87-98.
[6]汪大洋,周云,等.粘滞阻尼减震结构的研究与应用进展.[J].工程抗震与加固改造.2006,28(4):22-31.
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