某连体结构整体隔震设计与分析  

Isolation structure design and analysis of a connected structure

作　　者：余文正 蒋龙飞 伍小平 秦磊 李东辉 Yu Wen-zheng;Jiang Long-fei;Wu Xiao-ping;Qin Lei;Li Dong-hui(Kunming University,Kunming 650214,China;Yunnan Coal Chemical Industry Applied Technology Research Institute,Kunming 650500,China)

机构地区：[1]昆明学院,云南昆明650214 [2]云南煤化工应用技术研究院,云南昆明650500

出　　处：《工程抗震与加固改造》2023年第5期84-91,99,共9页Earthquake Resistant Engineering and Retrofitting

基　　金：云南省教育厅科学研究基金项目(2020J0512);昆明学院引进人才科研项目(YJL2106);装配式建筑用宽温域隔震橡胶支座的研究(202004AR040014);云南省大学生创新创业训练计划项目(202111393006)。

摘　　要：某连体结构位于8度区,为重点设防类建筑。采用隔震技术使上部结构按照降低1度的目标进行设计。为了实现该目标,首先,根据重力荷载代表值初步布置隔震支座;其次,选择合适的地震波采用Perform3d软件进行设防地震作用下分析,验证了初步布置方案可以实现降低1度目标;最后,通过Perform3d软件进行罕遇地震作用下的弹塑性分析,验证了结构的抗倒塌的能力,并得到以下结论:(1)隔震技术可以大幅降低上部结构在地震作用下的加速度,从而减小了上部结构受到的地震力;(2)采用隔震技术后,在罕遇地震作用下,隔震支座的塑性变形耗能占主要部分,绝大部分上部结构构件处于弹性阶段,有较高的安全储备;(3)与传统抗震技术相比,采用隔震技术后,连廊与主体连接处的连接杆件内力降低了75%。A connected structure is located in 8 degree zone,which is a key defensive building.The superstructure is designed according to the target of reducing I degree by using isolation technology.In order to achieve this goal,the isolation bearings are initially arranged according to the representative value of gravity load.Secondly,the appropriate seismic wave is selected,and the Perform3d software is used to analyze the seismic fortification,which verifies that the preliminary layout scheme can achieve the goal of reducing 1 degree.Finally,elastic-plastic analysis under the action of rare earthquake is carried out by perform3d sofware to verify the anti collapse ability of the structure.The conclusion is as follows:(1)The seismic isolation technology can greatly reduce the acceleration of the superstructure under earthquake action,thus reducing the seismic force on the superstructure;(2)After adopting the isolation technology,the plastic deformation energy consumption of the isolation bearing is the main part under the rare earthquake,most of the superstructure members are in the elastic stage and have high safety reserves;(3)Compared with the traditional seismic technology,the internal force of the connecting rod at the connection between the corridor and the main body is reduced by 75%.

关 键 词：连体结构 隔震技术 弹塑性分析 能量分布 高安全储备 

分 类 号：TU352[建筑科学—结构工程]