(南京长江都市建筑设计股份有限公司, 南京 210002)

摘要: 结合某实际工程项目研究了框架-核心筒超高层结构中框架斜柱设计的关键问题,通过理论分析及模型对比研究了斜柱的传力机制及对主体结构的影响. 研究表明:对于斜柱内倾框架,斜柱轴力水平分力可减小斜柱的剪力,对于斜柱外倾框架,斜柱轴力水平分力会增大斜柱的剪力;斜柱倾角变化楼层的框架梁轴力均明显大于其他各层,在结构设计时为确保框架梁的有效传力,需对框架梁进行在拉力作用下的强度和裂缝验算;设计时可仅考虑

框架梁的水平传力,楼板可作为承担水平力的二道防线.

关键词: 超高层建筑; 框架-核心筒结构; 斜柱; 受力分析

中图分类号:TU375 文献标志码:A 文章编号:1002-848X(2022)05-0099-08

DOI:10. 19701 / j. jzjg. LS210027

Force analysis and related design of frame inclined columnin frame-core tube super high-rise structure

JIANG Han, ZHAO Xuefei, LIU Jinlong, SONG Jiuxiang

(Nanjing Yangtze River Urban Architectural Design Co., Ltd., Nanjing 210002, China)

Abstract: Based on a practical engineering project, the key problems of frame inclined column design in frame-core tubesuper high-rise structure were studied. Through theoretical analysis and model comparison, the force transfer mechanism ofinclined column and its influence on the main structure were studied. The results show that: for the inward inclined frame,the horizontal component of inclined column axial force can reduce the inclined column shear, for the outward inclinedframe, the horizontal component of inclined column axial force can increase the inclined column shear. The axial force ofthe frame beam in the floor with the change of inclined column slope is significantly greater than that in other floors. Inorder to ensure the effective force transmission of the frame beam, the strength and crack under the tensile force need to bechecked in the structural design. In the design, only the horizontal force transfer of frame beam need to be considered, andthe floor can be used as the second line of defense to bear the horizontal force.

Keywords:super high-rise building; frame-core tube structure; inclined column; performance analysis

第一作者:江韩,博士,研究员级高级工程师,一级注册结构工程师,主要从事结构设计工作,Email: 892431362@ qq. com.

[引用本文] 江韩,赵学斐,刘金龙,等. 框架-核心筒超高层结构中框架斜柱的受力分析与相关设计[ J] . 建筑结构,2022,52 ( 5) : 99-106. JIANG Han, ZHAO Xuefei, LIU Jinlong, et al. Force analysis and related design of frameinclined column in frame-core tube super high-rise structure[ J] . Building Structure,2022,52(5) :99-106.