(同济大学建筑设计研究院 (集团) 有限公司, 上海 200092)

摘要: 中国国际丝路中心大厦建筑高度 498m,主体结构高度 482. 5m,属于超高层建筑. 首先分析了现行规范刚重比计算公式的适用条件,然后依据本项目楼层质量、地震作用和风荷载的实际分布情况,对现行规范中的刚重比计算公式进行修正. 通过采用修正后的刚重比计算公式对本项目的整体稳定性进行评价,结果表明项目整体稳定性满足要求,但需要考虑结构的重力二阶效应. 采用 ETABS 软件对结构进行整体屈曲分析,结果表明,塔楼具有较好的整体稳定性. 线弹性屈曲分析计算得到的刚重比数值与修正后的刚重比公式计算得到的数值较为接近,前者略大于后者,可见采用修正后的刚重比公式对结构进行设计偏安全.

关键词: 中国国际丝路中心大厦; 超高层建筑; 整体稳定性; 刚重比; 屈曲分析

中图分类号:TU398. 2 文献标志码:A 文章编号:1002-848X(2023)09-0001-06

DOI:10. 19701 / j. jzjg. LS202084

Overall stability analysis of super high-rise structure of China International Silk Road Center Building

WANG Jianfeng, YU Zhongjun, DUAN Lian

(Tongji Architectural Design (Group) Co. , Ltd. , Shanghai 200092, China)

Abstract: The building height of China International Silk Road Center Building is 498m, and the height of the mainstructure is 482. 5m, which is a super high-rise building. Firstly the applicable conditions of the calculation formula of thestiffness-to-weight ratio in the current code was analyzed, then the calculation formula of the stiffness-to-weight ratio in thecurrent code was revised according to the actual distribution of the project′s floor mass, earthquake action and wind load.The overall stability of the project was evaluated by using the revised stiffness-to-weight ratio calculation formula, and theresults show that the overall stability of the project meets the requirements, but the second-order effect of gravity of thestructure needs to be considered. The overall buckling analysis of the structure was carried out by ETABS software, and theresults show that the tower has good overall stability. The stiffness-to-weight ratio value calculated by linear elastic bucklinganalysis is close to the value calculated by the revised stiffness-to-weight ratio formula, and the former is slightly larger thanthe latter, which shows that the design using the revised stiffness-to-weight ratio formula is safer.

Keywords:China International Silk Road Center Building; super high-rise building; overall stability; stiffness-to-weightratio; buckling analysis

第一作者:王建峰,硕士,正高级工程师,主要从事超高层及复杂建筑结构设计与研究,Email:22wjf@ tjad. cn.

[引用本文] 王建峰,虞终军,段炼. 中国国际丝路中心大厦超高层结构整体稳定性分析[ J]. 建筑结构,2023,53(9):1-6. WANG Jianfeng,YU Zhongjun,DUAN Lian. Overall stability analysis of super high-rise structure of ChinaInternational Silk Road Center Building[J]. Building Structure,2023,53(9):1-6.