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中文摘要：
针对工程常见的八角伞形膜结构,基于ADINA软件开展结构表面风压和结构风振响应的数值模拟,分析结构风致位移响应、速度响应、加速度响应、等效应力等关键风效应,研究膜结构的矢跨比、风向角、膜初始预张力、膜帽处开敞与封闭情形等关键参数对表面风压和结构风振的影响规律,揭示了此类膜结构风振规律和结构风压系数.研究成果可为此类结构的抗风设计计算提供参考.
英文摘要：
By using commercial software ADINA, the numerical simulation of the wind pressures and wind- induced dynamic responses of an umbrella-shaped tension membrane structure were performed. Some key effects including wind-induced dynamical displacements, velocities, accelerations and equivalent stresses of the membrane structure were systematically investigated. Moreover, the effect of several important parameters on wind pressures and structural wind-induced dynamic responses was summarized, such as structural rise-span ratio, incoming wind direction, membrane initial pre-tension and opening/closure forms in the membrane hat. Furthermore, the structural wind-induced responses and wind pressure coefficients were obtained. The present results can provide reference for the wind resistant design of similar tension membrane structures.
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