有无流体粘性阻尼器的高层建筑地震反应评价

Khalil Yahya Mohammed Almajhali, Bin Xu, Qingxuan Meng
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引用次数: 1

摘要

高层结构的主要侧向荷载是地震荷载。在高层建筑中,结构对地震荷载的响应呈指数级增长。因此,阻尼可以降低结构在侧向荷载作用下的响应,在抗震高层结构设计中具有重要的作用。地震产生的能量将被这些装置吸收,作用在建筑物主体结构上的荷载将大大减少。采用流体粘性阻尼器对钢筋混凝土结构进行耗能和减振。结构的主要作用是承受横向荷载并将其良好地传递给基础。施加在结构上的横向荷载是动力荷载,它会引起结构的振动。本研究在考虑流体粘性阻尼器的基础上,利用ETABS 2015软件对不同截面的方形平面结构的响应进行了分析。数值算例结果表明,流体粘性阻尼器(250)能有效地降低结构的响应,包括建筑物的基底剪力,无论楼面布置如何,方柱结构都比矩形柱结构表现更好,具有良好的抗震性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Seismic Response Evaluation of High-Rise Building with and Without Fluid Viscous Damper
The major lateral load of the high structures is the earthquake load. In the high rise buildings, the structural response increases exponentially in response to earthquake load. Therefore, the damping has significant function in design of Earthquake Resistant High Structures, which can decrease the response of the structure when exposed to lateral loads. The energy produced by earthquake will be absorbed by these devices and the load acting on the main structure of the building will reduce significantly. The fluid viscous dampers are used to dissipate energy and lessen the response of reinforced concrete buildings. The main function of structure is to carry the lateral loads and transmit them well to the foundation. The lateral loads enjoined on the structures are dynamic in nature, which cause vibrations in the structure. In the current study, the responses of the structures having square plans with different cross-sections are analyzed by the software ETABS 2015 based on the consideration of Fluid Viscous Damper. The results of numerical examples show that fluid viscous damper (250) can reduce the response of the structures effectively, including the base shear of the buildings, and the structures with square columns performs perfect and have good earthquake resistant characteristics when compared to structures with rectangular columns regardless of the flooring plan.
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