转换层隔震的地铁上盖高层剪力墙结构设计与分析  

Structural design and analysis of high-rise shear wall structure on the top of subway for transfer floor seismic isolation

作　　者：黄存智 Huang Cun-zhi(National Research Center for Construction Engineering Technology,Beijing 100013;China Academy of Building Research Co.LTD,Beijing 100013)

机构地区：[1]国家建筑工程技术研究中心,北京100013 [2]中国建筑科学研究院有限公司,北京100013

出　　处：《工程抗震与加固改造》2023年第4期50-57,共8页Earthquake Resistant Engineering and Retrofitting

摘　　要：地铁上盖建筑底部大空间常会导致竖向构件不连续,转换层设置隔震支座可有效降低上部结构设防烈度,通过设定性能化指标,保证整体结构的安全性。本文对某8度区高层住宅设计进行了介绍,分析得出中震作用下隔震结构的水平减震系数小于0.4,上部结构可按7度设防烈度计算,隔震支座竖向拉压应力、水平变形、偏心率及抗风承载力验算均满足规范要求。整体结构性能化设计满足预定指标,大震下弹塑性分析结果验证了结构布置的合理性,表明隔震技术既安全又可提升实际使用品质。The large space at the bottom of the subway building often leads to the discontinuity of vertical components.Setting isolation bearings on the transfer floor can effectively reduce the fortification intensity of the superstructure,and ensure the safety of the whole structure by setting performance indicators.In this paper,the design of a high-rise residential building in 8 degree area is introduced,and the analysis shows that the horizontal damping coefficient of the isolation structure is less than 0.4 under the action of moderate earthquake,and the superstructure can be calculated according to the intensity of 7 degree fortification.The vertical tension and compression stress,horizontal deformation,eccentricity and wind bearing capacity of the isolation bearing meet the requirements of the code.The performance design of the whole structure meets the predetermined index,and the elastoplastic analysis results under large earthquakes verify the rationality of the structure layout,indicating that the isolation technology is safe and can improve the actual use quality.

关 键 词：橡胶隔震支座 减震系数 罕遇地震 性能化设计 弹塑性分析 

分 类 号：TU973.16[建筑科学—结构工程] TU352.12