(中国中元国际工程有限公司, 北京 100089)

摘要: 海口双子塔⁃南塔位于地震高烈度与强台风区,结构设计存在较大挑战,其整体稳定及构件稳定承载力验算是其中的重要内容. 首先采用倒三角分布荷载、风荷载和地震作用三种荷载分布形式计算了结构的弹性等效侧向刚度,并据此得到了结构的刚重比和 P⁃Δ 效应的影响,结果表明,结构具有较好的抗侧刚度和整体稳定性能. 使用 MIDAS Gen 软件进行了结构整体屈曲分析,进一步印证了结构具有良好的整体稳定性能. 通过弹性屈曲计算了巨型柱及 RCFT 中柱的屈曲临界荷载,并使用欧拉公式反算了计算长度系数.

关键词: 海口双子塔; 整体稳定; 弹性等效侧向刚度; 刚重比; 计算长度系数

中图分类号:TU922 文献标志码:A 文章编号:1002⁃848X(2022)16⁃0007⁃04

DOI:10. 19701 / j. jzjg. ZJ200031

Study on overall stability and calculated length coefficient of key components ofHaikou Twin Towers⁃South Tower

ZHANG Song, ZHANG Tongyi, WANG Ning, ZHANG Te, MA Ruijia, ZHANG Zhe

(China IPPR International Engineering Co. , Ltd. , Beijing 100089, China)

Abstract: Haikou Twin Towers⁃South Tower is located in the area of high seismic fortification intensity and strong typhoon,which is a large threat to structural design. The checking calculation of the overall stability and component stability bearingcapacity are important contents. Firstly, the elastic equivalent lateral stiffness of the structure was calculated by using threeload distribution forms including inverted triangle distribution load, wind load and earthquake action, and then theinfluences of the structure􀆳s ratio of stiffness to weight and P⁃Δ effect were obtained. The results show that the structure hasgood lateral stiffness and overall stability performance. MIDAS Gen software was used to analyze the overall buckling of thestructure, which further proves that the structure has good overall stability performance. The critical buckling loads of megacolumns and RCFT middle columns were calculated using elastic buckling method, and the calculated length coefficient wascalculated by Euler Formula.

Keywords:Haikou Twin Towers; overall stability; elastic equivalent lateral stiffness; the ratio of stiffness to weight;calculated length coefficient

∗企业横向科研基金项目(S2016013R).

第一作者:张松,博士,教授级高级工程师,一级注册结构工程师、注册土木工程师(岩土),主要从事复杂结构设计研究,Email:zhangsong@ ippr. net.

[引用本文] 张松,张同亿,王宁,等. 海口双子塔⁃南塔结构整体稳定与关键构件计算长度系数研究[J]. 建筑结构,2022,52(16):7⁃10,21. ZHANG Song,ZHANG Tongyi,WANG Ning,et al. Study on overall stability and calculatedlength coefficient of key components of Haikou Twin Towers⁃South Tower[J]. Building Structure,2022,52(16):7⁃10,21.