某超高层框架-核心筒结构减震性能研究  

SEISMIC ANALYSIS OF A SUPER HIGH-RISE FRAME-CORE TUBE STRUCTURE WITH VISCOUS DAMPERS

作　　者：许航 解恒燕[1] 郑鑫[1] XU Hang;XIE Hengyan;ZHENG Xin(College of civil Engineering and Water Conservancy,Heilongjiang Bayi Agricultural University,Heilongjiang Daqing 163319,China)

机构地区：[1]黑龙江八一农垦大学土木水利学院,黑龙江大庆163319

出　　处：《低温建筑技术》2023年第11期52-55,60,共5页Low Temperature Architecture Technology

基　　金：黑龙江省自然科学基金联合引导项目(LH2019E072)。

摘　　要：框架-核心筒拥有较好的抗震效果,整体性、刚度较好,但是在强震作用下水平位移较大,为减少结构的地震响应,文中分析某超高层框架-核心筒结构采用粘滞阻尼器的减震性能。采用MIDASGEN杆系有限元软件对某超高层框架-核心筒结构进行PUSH-OVER分析,得到该结构薄弱层位置。分别在薄弱层、薄弱层中间楼层和薄弱层与薄弱层的中间楼层3种方案设置粘滞阻尼器对结构进行PUSH-OVER分析,对比原结构和3种布置阻尼器之后的层间位移和层间位移角。分析结果表明将粘滞阻尼器安装在非薄弱层减震效果不佳,阻尼器并非安装越多越好,将粘滞阻尼器放置在薄弱层减震效果是最好的,为同类工程减震设计提供理论支撑。The frame-core tube structure has good seismic effectiveness,and good integrity and stiffness,whereas the horizontal displacement is large under strong earthquake.This paper studies the seismic performance of super high-rise frame-core tube structure using viscous dampers to reduce the impact of earthquake on the structure.The PUSH-OVER analysis on a super high-rise frame-core tube structure is proceeded by using MIDAS GEN finite ele-ment software,and the location of the weak floor of the structure is obtained.Three schemes of viscous damper are re-spectively set in the weak floor,the middle floor between the weak floor,and both the middle floor of the weak floor and the weak floor in this structure.The inter-story displacement and inter-story displacement angle of the original structure from the three kinds of viscous damper are compared.The results show that the effectiveness is not good as installing viscous dampers in the non-weak layer.More dampers cannot bring good seismic effectiveness,and set-ting viscous dampers in the weak floor is the best way.The paper may provide theoretical support for seismic design of similar projects.

关 键 词：超高层框架-核心筒结构 粘滞阻尼器 PUSH-OVER分析 薄弱层 

分 类 号：TU352.1[建筑科学—结构工程]