中信大厦巨型柱设计研究  

Research on Design of Mega Columns of CITIC Tower

作　　者：宫贞超[1] 杨蔚彪[1] 常为华[1] GONG Zhenchao;YANG Weibiao;CHANG Weihua(Beijing Institute of Architectural Design,Beijing 100045,China)

机构地区：[1]北京市建筑设计研究院有限公司,北京100045

出　　处：《工业建筑》2022年第9期80-86,共7页Industrial Construction

摘　　要：巨型柱设计是中信大厦结构设计的重点之一。采用建筑结构一体化设计方法,对巨型柱几何精确控制,实现建筑效果与结构传力的统一。通过合理地分腔构造设计,解决巨型柱复杂截面变化的同时,确保其传力可靠、施工可行。楼板刚度对巨型柱计算长度的影响显著,通过分析不同楼板刚度与计算长度之间的变化规律,确定经济合理的计算长度。通过有限元分析验证巨型柱分叉节点、巨型柱与转换桁架连接节点等关键节点设计的安全性。本工程中巨型柱采用非埋入式柱脚,并设置翼墙扩散柱脚内力,通过有限元验证该柱脚在罕遇地震不屈服控制工况下的可靠性。The mega column design is one of the key points in the structural design of CITIC Tower.The integrated design method of building structure is adopted to control the geometry of the mega-column to realize the unity of architectural effect and structural force transmission.Through appropriate cavity structure design,it can solve the complicated cross-section changes of the mega column,while ensuring its reliable force transmission and convenient construction.The slab stiffness has a significant influence on the effective length of the mega column.By analyzing the variation of the effective length,the economical value of the effective length was determined.Through the finite element analysis,the safety of the key joints such as the mega column branching joint,the mega column and the transfer truss joint was verified.In this project,non-embedded column foot was adopted,and wing wall was set to diffusion the column force.The column foot reliability under non-yielding in rare seismic was verified by finite element.

关 键 词：巨型柱 几何控制 分腔构造 计算长度 节点 柱脚 

分 类 号：TU973.3[建筑科学—结构工程]