【作者】 农国畅；

【导师】 段忠东；

【作者基本信息】 哈尔滨工业大学 ， 土木工程， 2011， 硕士

【摘要】 基础隔震技术是一种有效的被动控制减震技术,随着经济的发展高层建筑日益增多,隔震技术在中高层建筑中也已得到了广泛的应用。国内外许多学者对结构在地震作用下的隔震效果展开了大量理论和实验研究,而对于高层隔震结构在风作用下动力响应以及隔震结构的静力等效风荷载的研究相对较少。本文针对基础隔震建筑增加隔震层之后由于动力特性的改变,研究了基础隔震建筑在脉动风荷载下的响应以及对其静力等效风荷载进行计算,研究隔震建筑风荷下安全性、舒适性性能。本文针对我国东南沿海某城市一栋十二层框架混凝土隔震结构进行地震荷载时程下的响应分析,在Ansys环境下对隔震与非隔震结构建立有限元模型,对两种结构在八度地震作用下的响应进行了时程分析。为了解台风区隔震结构的风振响应,利用产生的人工脉动风时程,模拟脉动风荷载对结构进行了风振响应计算,对比分析了隔震与非隔震结构在风荷载作用下的响应。本文最后回顾了结构静力等效风荷载的计算方法,通过不同等效方法,对基础隔震结构的静力等效风荷载进行了分析比较。更多还原

【Abstract】 Base-isolation is an effective seismic passive control technology. With the economic development, base-isolated technology has been widely used in middle and even high-rise buildings. Theoretical and experimential researches about the seismic control effectiveness about the base-isolated structures have been done, but there is rare research about the dynamic response of base-isolated structures under the wind loads and equivalent static wind load of this type of structures. This paper is to analyze the dynamic response of isolated and non-isolated structures under wind loads and compute the equivalent static wind loads of the isolated structures with different methods.In this paper, the seismic reponse of a 12 storey building is computed using Ansys for the finite element models of base-isolated and non-isolated structures, and their responses are compared under eight-degree of earthquake intensity.To investigate the wind induced response of seismic base-isolated structures, the fluctuating wind speeds are simulated with Auto Regressive method, The responses of the base-isolated and non-isolated structures under the fluctuating wind loads was analyzed and compared.The static equivalent wind load methods are reviewed. The equivalent wind loads for base-isolated structures are calculated and compared with different methods.更多还原