水平地震作用下摄影棚混合结构支承框架的减震控制  

Seismic control on support frame of hybrid studio structure under horizontal earthquake action

作　　者：周长东[1] 李亚鹏 阿斯哈 裘建东[2] Zhou Chang-dong;Li Ya-peng;A Si-ha;Qiu Jian-dong(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Radio,Film and Television Design and Research Institute,Beijing 100045,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]中广电广播电影电视设计研究院,北京100045

出　　处：《工程抗震与加固改造》2022年第2期94-104,共11页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金面上项目(52078030,51678039)。

摘　　要：由钢筋混凝土框架支承的大跨钢网架屋盖组成的混合结构在现代大型摄影棚结构中广泛采用,而下部钢筋混凝土支承框架抗震性能较差,需要对其进行减震控制。本文以某大型摄影棚混合结构作为研究对象,通过有限元软件SAP2000建立了非线性有限元分析模型,针对水平向地震作用,通过在支承框架中设置粘滞阻尼器,分析不同数量和参数的阻尼器在设防和罕遇地震作用下的减震效果差别,以使粘滞阻尼器的布置经济合理,实现有效减震的目标。研究结果表明,合理布设粘滞阻尼器可有效减小结构柱顶位移和基底剪力,提升支承框架的抗震性能。The hybrid studio structure composed of long-span steel grid roof structure supported by reinforced concrete frame is widely used in modern large-scale studio structure, while the seismic performance of the lower reinforced concrete frame is poor, so it is necessary to carry out seismic control. In this paper, a large-scale studio hybrid structure is selected as the research object, and the nonlinear finite element analysis model is established with SAP2000. For the horizontal earthquake action, by setting viscous dampers in the support frame, the difference in damping effect of different numbers and parameters of dampers under fortification and rare earthquakes is analyzed. To achieve the goal of effective shock absorption, the viscous dampers are economically and rationally arranged. The results of the study show that the rational arrangement of viscous dampers can effectively reduce the displacement of the top of the column and the shear force of the base, and improve the seismic resistance of the support frame.

关 键 词：减震控制 支承框架 摄影棚混合结构 水平地震 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程]