九江文化中心自由曲面钢屋盖结构设计  

Structural design on the free-form steel roof for Jiujiang Cultural Centre

作　　者：韩重庆[1] 黄桂新[2] 陈浩曼[2] 张翀[1] 

机构地区：[1]东南大学建筑设计研究院有限公司,南京210096 [2]东南大学土木工程学院,南京210096

出　　处：《建筑结构》2013年第5期29-34,共6页Building Structure

摘　　要：九江文化中心钢屋盖外形为造型轻盈的自由曲面,根据不同部位的受力特点,采用由双层螺栓球网壳、空间管桁架、树状支撑系统杂交而成的空间网格结构。重点介绍了钢屋盖的结构体系布置、静载分析、动力特性、整体稳定及多维多点地震响应分析。分析结果表明:关键部位的管桁架有效地增强了结构的整体刚度;树状支撑与大跨屋盖共同形成了高效的拱形受力机理;跨越多栋建筑的钢屋盖需进行多维多点地震响应分析;曲面的面外变形可显著地降低温度应力。AThe shape of steel roof for Jiujiang Cultural Centre is light free-form surface. According to the mechanical characteristics of different parts, the steel roof adopts spatial latticed structure which is consisted of double-layer reticulated shell, space tube truss and dendritic support system. Structural layout, static analysis, dynamic characteristic, overall stability and multi-dimensional and multi-support earthquake excitation analysis were mainly introduced. The results indicate that： the tube truss arrangement in key positions enhances the structural rigidity effectively; the dendritic support together with large-span roof is served as arched stress mechanism; the steel roof which spans multiple buildings needs multi-dimensional and multi-support earthquake excitation analysis; out-of-plane deformation of free-form structure reduces temperature stress significantly.

关 键 词：双层网壳 管桁架 树状支撑 杂交结构 多维多点地震响应分析 

分 类 号：TU242.4[建筑科学—建筑设计及理论] TU318.2