某高度522m超高层结构振动台试验与理论分析研究  

Shaking table test and theoretical analysis on a 522 m super high-rise structure

作　　者：薛红京 束伟农[1] 陆新征[2] 田春雨 高志斌 张宏 李华峰[1] 陈星雨 XUE Hongjing;SHU Weinong;LU Xinzheng;TIAN Chunyu;GAO Zhibin;ZHANG Hong;LI Huafeng;CHEN Xingyu(Beijing Institute of Architectural Design Co.,Ltd,Beijing 100045,China;Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Department of Civil Engineering,Tsinghua University,Beijing 100084,China;State Key Laboratory of Building Safety and Environment,China Academy of Building Research,Beijing 100013)

机构地区：[1]北京市建筑设计研究院有限公司,北京100045 [2]清华大学土木工程安全与耐久教育部重点试验室,北京100084 [3]中国建筑科学研究院有限公司建筑安全与环境国家重点实验室,北京100013

出　　处：《建筑结构学报》2023年第4期63-73,共11页Journal of Building Structures

摘　　要：为验证8度抗震设防烈度区某522 m超高层结构的抗震性能,设计并制作了1/40缩尺结构模型,通过模拟地震振动台试验,研究结构在8度多遇、设防、罕遇地震作用下的动力特性,考察其在单向和三向地震动输入下的变形及损伤情况。此外,采用ABAQUS软件对结构进行了8度罕遇地震作用下弹塑性时程分析,考察了结构动力特性和位移反应,分析结构的损伤状态和薄弱部位,并与振动台试验结果对比。结果表明,该结构采用的巨型柱、巨型斜撑与环带桁架的外框筒和型钢-混凝土组合结构核心筒形成的双重结构抗侧力体系,具有较好的稳定性和结构效能,该结构在8度(0.3g)罕遇地震作用下未发生倒塌,能够很好地满足“小震不坏、大震不倒”的性能要求。In order to verify the seismic performance of a 522 m high-rise structure in the 8-degree seismic intensity zone,a 1/40 scale structural model was design and fabricated.By means of shaking table tests,the dynamic characteristics of the structure were studied under the action of 8-degree frequent,fortified and rare earthquakes.And the deformation and damage of the structure under the actions of one-dimensional and three-dimensional earthquakes were investigated.In addition,ABAQUS software was used to carry out an elasto-plastic time history analysis of the structure under the action of 8-degree rare earthquake.The displacement response and dynamic characteristics of the structure simulated by the finite element method were compared with the shaking table test results,and the damage status and weak parts of the structure were analyzed.The results show that the structure has good stability and structural efficiency due to the double structural lateral force resisting system formed by the outer frame cylinder consisting of the mega-columns,the mega-diagonal braces and the ring belt trusses and the core of the combined steel-concrete structure.The structure does not collapse under the action of the 8-degree rare earthquake(0.3 times of the gravitational acceleration),which well meets the performance requirement of‘no damage under frequent earthquakes and no collapse under rare earthquakes’.

关 键 词：超高层建筑 巨型结构 振动台试验 弹塑性时程分析 动力特性 

分 类 号：TU973.2[建筑科学—结构工程]