摘要
国家体育馆屋盖为大跨度平面桁架结构,纵向由14榀平面桁架构成。采用高空拼装、逐榀累积滑移的施工方案进行钢屋盖的拼装。介绍了累积滑移技术的总体思路、施工流程、相关的设计计算及分级加载滑移等施工控制措施。通过仿真计算分析,保证桁架、支撑和滑移设施的受力和变形满足要求。同时,介绍了屋盖滑移同步控制的原理和策略。最后说明与传统技术相比该技术具有的优点。
Large-span plane truss structure was used in National Stadium roof, which was composed of 14 plane trusses at longitudinal direction. The steel roof was accumulative slipped and assembled at high altitude. Firstly, general ideas and construction process of accumulative slippage technology were introduced, as well as corresponding design and calculation, multi-stage loading and shpping control measures. Stress and deformation of trusses, supports and slipping equipments were controlled in designed range, which were ensured by simulating calculate and analysis. Secondly, principle and strategy of roof structure slippage synchronization control were introduced. At last, the advantages of accumulative slippage technology are showed by comparing with traditional assembling technology.
出处
《施工技术》
CAS
北大核心
2008年第5期53-55,共3页
Construction Technology
关键词
钢结构
高空拼装
累积滑移
设计计算
施工工艺
steel structure
assembling at high altitude
accumulative slippage
design and calculation
construction technology
