高烈度区某大型火车站高位隔震方案分析  

Analysis of a High-level Seismic Isolation Scheme for a Large Railway Station in a High-intensity Area

作　　者：欧旻韬 廖旭钊 吴桂广 焦柯 OU Mintao;LIAO Xuzhao;WU Guiguang;JIAO Ke(GuangDong Architectural Design&Research Institute Co.,Ltd.Guangzhou 510010,China)

机构地区：[1]广东省建筑设计研究院有限公司,广州510010

出　　处：《广东土木与建筑》2021年第8期27-30,35,共5页Guangdong Architecture Civil Engineering

摘　　要：某大型火车站位于高烈度区,结构方案采用橡胶隔震支座高位隔震体系。采用时程分析对此模型进行了两个水平向地震作用的分析,讨论了高位隔震结构在多遇地震和罕遇地震下的隔震性能。主要得出如下结论:高位隔震结构的位移角、柱顶剪力明显低于非隔震结构,表现出良好的减震效果;隔震支座配合设置粘滞阻尼器比单独采用天然橡胶隔振支座,更能有效减少地震力;增强高位隔震结构底部的嵌固和下部结构刚度,能显著增强隔震效果,减少悬臂柱的鞭稍效应。A large railway station,which is located in a high seismic fortification intensity region,is schemed to be designed with highposition rubber bearings(RB)isolation.Time-history analysis is used to analyze two horizontal seismic actions of the model,and the isola‐tion performance of the high seismic isolation structure under frequent earthquakes and rare earthquakes will be discussed.The main conclu‐sions are as follows:firstly,the displacement angle and the top shear force of the high-position seismic isolation structure are obviously low‐er than that of the non-isolation structure,showing good damping effect.Secondly,the use of seismic isolation bearings with viscous damper can reduce seismic force more effectively than only using natural rubber bearings isolation.Furthermore,enhancing the bottom fixing of the high-position isolation structure and the stiffness of substructure can significantly improve the seismic isolation effect,and reduce the whip‐lash effect of the cantilever column as well.

关 键 词：高位隔震结构 橡胶隔震 火车站站房抗震设计 时程分析 高烈度地区 

分 类 号：O328[理学—一般力学与力学基础]