武汉长江中心大型商业结构设计研究

引用文献:

季俊 包联进 陈建兴. 武汉长江中心大型商业结构设计研究[J]. 建筑结构,2022,48(09):55-61.

JI Jun BAO Lianjin CHEN Jianxing. Research on large-scale commercial structure design of Wuhan Yangtze River Center[J]. Building Structure,2022,48(09):55-61.

作者:季俊 包联进 陈建兴
单位:华东建筑设计研究院有限公司
摘要:武汉长江中心A1地块商业结构平面尺寸达185m×135m,同时还存在凹凸不规则、楼板不连续、竖向构件不连续等超限项,为平面和竖向不规则的超限工程。针对项目的结构设计特点、难点,开展了专项研究。采用钢筋混凝土框架结构体系,选用实腹钢梁实现中庭等区域大跨结构设计。介绍了结构基础选型;研究了提高整体结构抗扭刚度的设计加强对策;分析了商业中庭内外结构协同工作对大跨无柱中庭梁板的设计要求。开展了罕遇地震作用下中庭楼板抗剪承载力专项分析,以验证其满足性能目标要求。论述了转换梁转换柱以及大跨钢梁与钢筋混凝土主梁连接节点等关键构件与节点设计;阐述了人行激励下大跨楼面舒适度专项分析结果;归纳了罕遇地震下整体结构指标与结构构件的损伤情况。目前项目的主体结构已经封顶,验证了分析研究及设计对策的可行性,保障了整体结构的安全性。
关键词:武汉长江中心,商业结构,抗扭刚度,中庭结构协同,楼面舒适度分析,弹塑性时程分析
作者简介:季俊,博士,高级工程师,一级注册结构工程师,主要从事超高层及复杂结构设计研究,Email:jj14490@ecadi.com。
基金:上海市青年科技启明星计划资助项目(19QB1400600);上海市社会发展科技攻关项目(21DZ1204603)。
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Research on large-scale commercial structure design of Wuhan Yangtze River Center
JI Jun BAO Lianjin CHEN Jianxing
(East China Architectural Design & Research Institute Co., Ltd.)
Abstract: The commercial structure of the A1 plot of Wuhan Yangtze River Center has a plane size of 185m 135m.There are over-limit items such as irregular unevenness, discontinuous floor slab, discontinuous vertical components, etc.,which is an over-limit project with plane and vertical irregularities. According to the characteristics and difficulties of structural design of the project, special research was carried out. The reinforced concrete frame structure system was adopted, and the solid web steel beam was used to realize the large-span structure design in the atrium and other areas. The selection of structural foundation was introduced. The design strengthening countermeasures to improve the torsional stiffness of the overall structure were studied. The design requirements for the large-span column-free atrium beams and slabs for the cooperative work of the internal and external structures of the commercial atrium were analyzed. A special analysis of the shear bearing capacity of the atrium floor under rare earthquakes was carried out to verify that it meets the performance target requirements. The design of key components and joints such as transfer beams, transfer columns,large-span steel beams and reinforced concrete main beams was discussed. The special analysis results of long-span floor comfort under pedestrian excitation were expounded. Overall structural indicators and damage of structural members under rare earthquakes was summarized. At present, the main structure of the project has been capped, which verifies the feasibility of analysis, research and design countermeasures, and ensures the safety of the overall structure.
Keywords: Wuhan Yangtze River Center; commercial structure; torsional stiffness; atrium structure synergy; floor comfort analysis; elastoplastic time history analysis
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