(中南建筑设计院股份有限公司, 武汉 430070)

摘要: 某高层办公楼建筑高度为 249. 70m,为超 B 级超限高层建筑,同时有多项不规则,采用钢筋混凝土框架-核心筒结构,采用地下室外墙与基坑支护地下连续墙合为一体的两墙合一方案. 风洞试验表明,风荷载为非控制工况,地震作用为控制工况. 采用基于性能的抗震设计方法,进行了不同地震水准作用下的结构弹性和弹塑性分析,采取了有针对性的抗震加强措施,减少因超限和其他不规则性所带来的抗震不利影响. 对结构进行了有针对性的专项分析,包括楼板应力分析,连梁支撑楼面梁解决方案分析,穿层柱屈曲分析,施工模拟分析,抗连续倒塌分析.分析结果表明,本工程能够达到预期的抗震性能目标 C. 各项结果均满足规范要求.

关键词: 超限高层结构; 结构设计; 风洞试验; 抗震性能分析; 弹塑性分析

中图分类号:TU973. 31 文献标志码:A 文章编号:1002-848X(2023)09-0032-08

DOI:10. 19701 / j. jzjg. LS220244

Structural design points and performance-based seismic analysis of an out-of-code high-rise office building

RUN Miao, CHEN Yanzhou, XIONG Sen, CAI Hongchao, ZOU Jie, LU Wei, DING Mengyang

(Central-South Architectural Design Institute Co. , Ltd. , Wuhan 430070, China)

Abstract: The building height of a high-rise office building is 249. 70m, which is a super B super high-rise building, atthe same time, there are many irregularities, and the reinforced concrete frame-core tube structure is adopted, and thetwo-wall integration plan of combining the basement exterior wall and the foundation pit support diaphragm wall is adopted.The wind tunnel test shows that the wind load is uncontrolled condition and the seismic action is controlled condition. Theperformance-based seismic design method was adopted to analyze the structure's elasticity and elastic-plasticity under theaction of different seismic levels, and targeted seismic strengthening measures were taken to reduce the seismic adverseeffects caused by out-of-code and other irregularities. Special targeted analysis were carried out for the structure, includingfloor stress analysis, floor beam solution analysis supported by coupling beams, buckling analysis of columns through floors,construction simulation analysis, and continuous collapse resistance analysis. The analysis results show that the project canachieve the expected seismic performance target C. All results meet the code requirements.

Keywords:out-of-code high-rise structure; structural design; wind tunnel test; performance-based seismic analysis;elastoplastic analysis

第一作者:闰淼,硕士,高级工程师,一级注册结构工程师,主要从事结构设计相关工作,Email:251384529@ qq. com.

[引用本文] 闰淼,陈焰周,熊森,等. 某超限高层办公楼结构设计要点与抗震性能分析[ J]. 建筑结构,2023,53(9):32-39,24. RUN Miao,CHEN Yanzhou,XIONG Sen,et al. Structural design points and performance-based seismicanalysis of an out-of-code high-rise office building [J]. Building Structure,2023,53(9):32-39,24.