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.
出处
《施工技术》
CAS
北大核心
2008年第7期97-99,共3页
Construction Technology
关键词
塔吊工程
核心筒
结构分析
结构加固
tower crane engineering
core tube
structural analysis
structural strengthening
