成都市锦城广场大跨度钢木组合屋盖结构分析与设计  

Analysis and design of large-span steel-wood composite roof structure for Chengdu Jincheng Plaza

作　　者：赵仕兴 杨姝姮 郭宇航 阳升 何飞 陈良伟 ZHAO Shi-xing;YANG Shu-heng;GUO Yu-hang;YANG Sheng;HE Fei;CHEN Liang-wei(Sichuan Provincial Architectural Design and Research Institute Co.,LTD,Chengdu 610000,China;Complex Structure Design and Research Center,Sichuan Provincial Architectural Design and Research Institute Co.tLTD^Chengdu 610000*China)

机构地区：[1]四川省建筑设计研究院有限公司,四川成都610000 [2]四川省建筑设计研究院有限公司复杂结构设计研究中心,四川成都610000

出　　处：《空间结构》2021年第4期62-70,共9页Spatial Structures

基　　金：住房和城乡建设部科技计划项目(2019-S-044);四川华西集团科技项目(HXKX2018/019)。

摘　　要：成都市锦城广场综合换乘服务中心屋盖采用大跨度钢木组合结构,以下弦胶合木交叉拱为主要受力构件,腹杆及上弦杆件采用圆钢管.除对屋盖结构进行静力荷载效应的设计与分析外,采用振型分解反应谱法和时程分析法进行了屋盖结构在多遇地震及罕遇地震下的地震响应分析,对结构的非线性稳定性、抗连续倒塌性能进行了研究,并补充了罕遇地震下的动力弹塑性分析.同时,对胶合木构件进行了抗火设计,对关键节点进行了有限元分析.结果表明,大跨度钢木组合屋盖结构安全可靠,具有良好的整体稳定性和抗震性能.The roof of comprehensive transfer service center for Chengdu Jincheng Plaza was designed as a large-span steel-wood composite structure. The lower chord cross-arches made of glulam were the main stress member, while the web and the upper chord members were steel pipes. In addition to a regular design and analysis of the static load assoicated with the roof, response spectrum analysis and time history analysis were conducted to estimate structural behaviour under frequent earthquake and rare earthquake. Elasto-plastic dynamic analysis under rare earthquake was also conducted after nonlinear stability analysis and progressive collapse resistance design. Besides, the fire-resistant design for glulam members and finite element analysis on key joints were carried out. Results show that the large-span steel-wood composite roof structure is safe and reliable with good structural stability and seismic performance.

关 键 词：钢木组合结构 胶合木交叉拱 时程分析 稳定性分析 动力弹塑性分析 抗连续倒塌 抗火分析 

分 类 号：TU366.3[建筑科学—结构工程] TU398.6