CCTV主楼大型塔吊应用阶段的结构分析及加固技术  

Structural Analysis and Strengthening Technology at Application Phase of Large Tower Crane in CCTV Main Building

作　　者：张琨[1] 陈振明[1] 

机构地区：[1]中国建筑股份有限公司,北京100020

出　　处：《施工技术》2008年第7期97-99,共3页Construction Technology

摘　　要：CCTV主楼施工中共4台大型内爬动臂式塔吊,塔吊运行对主体结构产生不利影响。在核心筒侧向刚度相对薄弱的情况下,重点介绍塔吊运行时的结构阶段荷载效应分析,支撑布置形式和必要的结构加固设计。最终采用柱间支撑加强技术进行加固。结果表明该技术满足塔吊工作时的位移要求和承载力要求。There are four large internal climbing whip-typed tower cranes in the construction of CCTV main building. The operation of tower crane can bring some disadvantages for main structure. On the condition of less lateral stiffness in core tube, loading effect analysis during the operation of tower cranes, support arrangement and structural strengthening design are introduced on emphasis in this paper. The strengthening technology of column-and-brace is adopted at last. The results show that this technology can satisfy the requirements of displacement and bearing capacity.

关 键 词：塔吊工程 核心筒 结构分析 结构加固 

分 类 号：TU745.1[建筑科学—建筑技术科学]