摘要
湖北省科技新馆为大跨度、大悬挑的复杂高层结构。利用4个电梯井筒布置了由矩形钢管混凝土柱+钢支撑(钢板墙)组成的4个筒体巨柱,巨柱支撑着由4榀斜拉长悬臂跨层钢桁架组成的巨梁,形成新型大跨巨型钢框架结构体系。4个筒体巨柱内采用BRB+摇摆耗能墙的新型联合减震方案以减小地震作用;4榀巨梁内设置斜拉索以减小大悬挑区域的竖向变形;中庭沉浸影院采用新型的“上挂下支”的双曲面网壳结构体系,采用了内衬圆钢管的相贯焊节点保证网壳节点的刚性连接。进行了BRB+摇摆耗能墙大震下的减震分析、桁架与柱连接复杂铸钢节点的有限元分析及节点试验、3层和4层大悬挑角部的舒适度分析及人致振动实测及长悬臂结构的低周往复荷载试验。结果表明:湖北省科技新馆结构体系布置合理,各部分满足设计要求。
The new Hubei Provincial Science and Technology Museum is a complex high-rise structure with a large-span and large-overhang.Four cylindrical giant columns composed of rectangular steel tube concrete columns and steel supports(steel plate walls)were arranged in four elevator shafts.Giant beams composed of four cable-stayed long cantilever cross-story steel trusses are supported by giant columns,forming a new type of large-span giant steel frame structure system.A new joint seismic reduction scheme using BRB and ribbed wall seismic device is adopted inside four cylindrical giant columns to reduce seismic effects.Four giant beams are equipped with stay-cables to reduce vertical deformation in the large overhanging area.The immersive cinema in the atrium adopts a new type of hyperbolic reticulated shell structure system with upper suspension and lower support,and adopts intersecting welded nodes lined with circular steel pipes to ensure the rigid connection of the mesh shell nodes.Seismic reduction analysis was carried out under earthquakes with BRB and ribbed wall seismic devices,finite element analysis and node testing of complex cast steel nodes connected to trusses and columns,serviceability analysis and human induced vibration measurement of large-overhanging corners on three and four floors,and low cycle reciprocating load testing of long cantilever structures were carried out.The results show that the structure system of the new Hubei Provincial Science and Technology Museum is reasonable,and all parts meet the design requirements.
作者
熊森
李霆
许敏
刘明
陈元坤
陈焰周
陈晓强
刘柳
XIONG Sen;LI Ting;XU Min;LIU Ming;CHEN Yuankun;CHEN Yanzhou;CHEN Xiaoqiang;LIU Liu(Central-south Architectural Design Institute Co.,Ltd.,Wuhan 430071,China)
出处
《建筑结构》
北大核心
2024年第17期1-8,共8页
Building Structure
基金
带肋双层连接钢板剪力墙性能研究及设计应用(公司2021006),公司2021006(厅头【2023】1656号-004)。
关键词
湖北省科技新馆
大跨巨型钢框架结构
网壳结构
屈曲约束支撑
摇摆耗能墙
舒适度分析
new Hubei Provincial Science and Technology Museum
large-span giant steel frame structure
reticulated shell structure
buckling restrained brace
ribbed wall seismic device
serviceability analysis
