建筑钢结构进展2025，Vol.27Issue(4)：100-108,117,10.DOI:10.13969/j.jzgjgjz.20231104001
青岛海天中心加强层伸臂桁架和腰桁架方案研究
Schematic Study of Outrigger and Waist Truss in Strengthened Stories of Qingdao Haitian Center
摘要
Abstract
In order to explore the determination of the number of strengthened stories and the arrangement of strengthened story components for super high-rise frame-tube structures with large aspect ratios,and to obtain a strengthened story layout plan that can meet the structural needs while minimizing the adverse effects of vertical stiffness and internal force mutations caused by the strengthened story,the T2 tower of Qingdao Haitian Center is taken as the research object,and a three-dimensional structural model is established based on ETABS software for analysis.After comparing the traditional scheme of arranging strengthened stories with improved schemes,a setting principle of strengthened story of super high-rise frame-tube structure with large aspect ratio based on this structure is proposed.The outrigger trusses and waist trusses are arranged in the direction with low stiffness,while the outrigger trusses are not arranged in the direction with high stiffness,and waist trusses are only set within the end spans.This approach not only can meet the structural demands of lateral displacement and inter-story drift,but also can reduce the abrupt change of inter-story drift and internal force.At the same time,the stiffness difference between the two main axes at the strengthened story is reduced,which is most beneficial to the structure.关键词
大长宽比/超高层结构/框架核心筒结构/加强层/伸臂桁架/腰桁架/内力突变Key words
large aspect ratio/super high-rise structure/frame-core tube structure/strengthened story/outrigger truss/waist truss/sudden change of internal force分类
土木建筑引用本文复制引用
杨俊芬,杨巽,郭凯源,杨想兵..青岛海天中心加强层伸臂桁架和腰桁架方案研究[J].建筑钢结构进展,2025,27(4):100-108,117,10.基金项目
国家自然科学基金(52378188) （52378188）
