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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 the numerical simulation of wind load, the time course analysis of stadium canopy structure is carried out, and the wind-induced vibration response is obtained. Due to the large vibration of the structure under wind load, the viscous damper is used to control the wind-induced vibration response of the structure. The results show that with the viscous damper, the displacement, acceleration and shaft axial force of the structure are obviously controlled, and the effect of vertical acceleration control is obvious. It can be seen that the wind vibration of the viscous damper in the long-span canopy structure The control effect is significant. At the same time, the viscous damper in the canopy structure damping control parameters were studied.