2015年9月上施工技术 第44卷第17期CONSTRUCTIONTECHNOLOGY DOI:10. 7672/sgjs2015170005 武汉国际博览中心椭球体钢连廊施工阶段仿真分析* 陆通 (武汉建工集团股份有限公司,湖北武汉430023) [摘要]结合武汉国际博览中心洲际酒店星空会所为超大跨度重型椭球体钢连廊的特点和施工难点,对其施工阶 段仿真分析进行了研究。
在分析过程中,深人分析和理解椭球体钢连廊在施工阶段和使用阶段的差异性后,采用 临时支撑法和局部杆件加强法对施工阶段的连廊钢结构进行加固,使得施工方案具有可行性;通过施工阶段模拟 分析,优化了施工方案的拼装顺序。
对整体提升施工进行不同步敏感性分析,确定不同步阔值,为实现施工的平衡 态提供理论依据。
施工监测结果表明,施工阶段仿真分析合理、正确。
[关键词】钢结构;钢连廊;椭球体;施工阶段;仿真分析;敏感性分析;监测 [中图分类号]TU393.3[文献标识码]A[文章编号】1002-8498(2015)17-0005-04 SimulationAnalysis ofEllipsoidSteel Corridor ofWuhan InternationalExpoCenter Lu Tong (Wuhan Construction Engineering Co.,Lad.,Wuhan,Hubei 430023,China) Abstract:Starry Club of Intercontinental Hotel of Wuhan International Expo Center is super long-span and heavy ellipsoid steel corridor structure.Based on its characteristics and the difficulty of construction, the simulation analysis of construction stage was studied. After deep analysis and understanding of the difference between construction stage and usage stage, the method of temporary support and the method with local bar strengthening which made the construction scheme feasible,were used to strengthen the steel corridor structure in the construction stage. Through the simulation of construction stage,the assembly sequence of the construction scheme was optimized. The sensitivity analysis of the integral lifting construction determined the non-synchronization threshold which provided the theoretical basis for the construction of equilibrium state.The results of construction monitoring showed that the simulation analysis of construction stage was reasonable and correct. Key words:steel structures; steel corridor; ellpsoid; construction stage; simulation; sensitivity analysis;monitoring 1工程概况骨混凝土结构刚接,主桁架GJ1,GJ2底部各设有4 武汉国际博览中心二期--洲际酒店工程,为根承载型屈曲约束斜支撑。
椭球面网壳长轴约 超五星级酒店,建筑顶标高101.700m,大底盘为545m,短轴40m,高22m,球顶标高96.600m。
椭球体 层半裙房,双塔楼共21层,两者顶部之间设置有超钢连廊计算模型如图1所示。
高大跨度重型椭球体钢连廊--星空会所,椭球体2工程特点及方案选择 钢连廊内设18,20层桁架+外包椭球面葵花形三向本工程的椭球体钢连廊具有如下特点。
单层钢圆管网壳,双塔楼间为非对称喇叭口,桁架1)结构悬空,位置超高,其...