千米摩天大楼支撑及关键节点受力分析与研究  

Mechanical Analysis and Research on Brace and Joints of Kilometer-Scale Skyscraper

作　　者：陈鹏[1] 陈勇[1] CHEN Peng;CHEN Yong(China Northeast Architectural Design&Research Institute Co.Ltd,Shenyang 110006,China)

机构地区：[1]中国建筑东北设计研究院有限公司,沈阳110006

出　　处：《结构工程师》2021年第2期222-227,共6页Structural Engineers

基　　金：中建股份科技研发课题(CSCEC-2016-Z-41)。

摘　　要：介绍了中国建筑千米级摩天大楼的抗侧力体系,分析了单塔巨型支撑、单塔间连接平台人字形支撑在风荷载、小震、中震、大震组合工况下的弹性应力比,研究了巨型支撑与次结构布置形式,给出了千米级大楼巨型支撑与楼面体系节点形式,提出高强度混凝土C90~C120等级的材料属性计算方法和取值,对连接平台不同位置的节点进行了有限元分析。有限元分析结果表明,节点设计满足预定性能化设计目标的要求。This paper introduces the lateral force resisting system of kilometer-scale skyscraper of China State Construction Engineering Corporation.The elastic stress ratio of single tower mega-brace and single tower herringbone strutting of connection platform under combined conditions of wind load,small earthquake,medium earthquake and large earthquake were analyzed,and the layout forms of the mega-braces and the substructures were also studied.Then the joint forms of mega-brace and floor system of kilometer-scale buildings were given,and the joint forms of high strength concrete are put forward.The calculation method and value of material attributes of grade C90-C120 were analyzed by finite element method.The results of finite element analysis showed that the joint design met the requirements of performance-based design.

关 键 词：千米级摩天大楼 单塔巨型支撑 有限元分析 性能化设计 高强度混凝土 

分 类 号：TU973.2[建筑科学—结构工程]