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武汉保利广场混合减震连体高层结构设计
李霆,王小南,范华冰,袁理明,黄银燊,刘峻
摘 要
李霆,王小南,范华冰,袁理明,黄银燊,刘峻
(中南建筑设计院股份有限公司,武汉 430071)
 
[摘要] 武汉保利广场是由两栋高度不同的塔体组成的高位大跨连体复杂高层建筑,塔楼均采用“圆钢管混凝土柱+H型钢梁或钢桁架+钢筋混凝土核心筒”结构,连接体采用钢桁架结构。由于超高层核心筒完全偏置在一侧,为减小及控制扭转振动,除两端加密柱外,还设置了非线性粘滞阻尼器。在42.5m大跨连体主桁架中部,斜腹杆采用屈曲约束支撑(BRB),以使在大震下连体中部可以上下错动耗能,减小主体结构的扭转。动力弹塑性分析及振动台模型对比试验表明,粘滞阻尼器及BRB减震效果明显。另外,还介绍了大厅42.5m×55.9m单层索网幕墙设计及4层地下室 “隔水-排水”抗浮设计等。
[关键词] 超高层; 连接体; 粘滞阻尼器; 混合减震; 排水抗浮; 单层索网幕墙
中图分类号:TU973.1+9, TU973.3+2文献标识码:A  文章编号:1002-848X(2012)12-0001-07
 
Structure design on connected double-tower of Wuhan Ploy Plazza with mixed energy dissipation devices
Li Ting, Wang Xiaonan, Fan Huabing, Yuan Liming, Huang Yingshen, Liu Jun
(Central-south China Architectural Design Institute Co., Ltd., Wuhan 430071, China)
 
Abstract: Wuhan Poly Plaza is a connected double-tower structure, each tower has different height and is consisted of concrete filled steel tubes with steel girders and concrete core walls, and the connecting structure with 42.5m span is made of steel trusses. Because the higher core tube completely offsets on one side, in order to reduce and control the torsion vibration, nonlinear fluid viscous dampers were setup in the structure. In the middle of connecting main truss, buckling restrained braces (BRB) were used as diagonals web members, which permit up-and-down deformation at the middle of the main trusses under seldomly occured earthquake, thereby reduce torsion of the main tower. The elastic-plastic time-history analysis and shaking table model tests show that BRB and viscous dampers absorb seismic energy effectively. The design of the sigle cable-net glass wall which is 42.5m wide and 55.9m high, and the design of drainage anti flosting were also introduced.
Keywords: ultra-high rise building; connected structure; fluid viscous damper; mixed energy dissipation; drainage anti floating; sigle cable-net glass wall
作者简介:李霆,教授级高级工程师,Email:lting@vip.sina.com。
 
参考文献
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[2] 李霆,王小南,黄银燊,等. 武汉保利广场混合减震连体高层抗震性能研究[J].建筑结构,2012,42(12):8-12,31.
[3] 徐培福,傅学怡,王翠坤,等.复杂高层建筑结构设计[M].北京:中国建筑工业出版社,2005.
[4] 武汉大学结构风工程研究所. 保利文化广场风洞试验与抗风性能分析报告 [R]. 2008.
[5] 广州大学结构工程研究所. 武汉保利文化广场模拟地震振动台试验研究报告 [R]. 2009
[6] 尹华钢,李志强,刘晓华,等.北京新保利大厦结构抗震设计[J].建筑结构,2007,37(4):1-5.
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