大跨度钢结构转换桁架施工关键技术研究  

RESEARCH ON KEY TECHNOLOGY OF CONSTRUCTION OF LARGE-SPAN STEEL TRANSITION TRUSS

作　　者：陈硕晖[1] 张开臣[2] 齐翰 胡洋[2] 司波[2] CHEN Shuo-hui;ZHANG Kai-chen;QI Han;HU Yang;SI Bo(Beijing No.3 Construction Engineering Co.,Ltd,100044,Beijing,China;Building Construction Research Institute Co.,Ltd.,100039,Beijing,China;Bejjing Construction Engineering Group Co.,Ltd,100055,Bejing,China)

机构地区：[1]北京市第三建筑工程有限公司,北京100044 [2]北京市建筑工程研究院有限责任公司,北京100039 [3]北京建工集团有限责任公司,北京100055

出　　处：《建筑技术》2021年第5期544-547,共4页Architecture Technology

摘　　要：国家会议中心二期工程在20.000m标高设置转换层,形成8000m^(2)的无柱空间主会场(72m大跨度转换)和20000m^(2)无柱空间会展厅(81 m大跨度转换,转换平台上重载)。通过分析大跨度钢结构桁架桥施工的重点及难点,采取留设超长结构施工缝选择转换层楼板浇筑时机、设置转换层楼板后浇带等技术措施,通过施工过程模拟分析,技术得到了适当细化。China National Conference Center Phase Ⅱ has a conversion layer at an elevation of 20.000m,forming a main venue of 8000m^(2) column-free space(72 m large-span conversion)and 20000 m^(2) column-free space exhibition hall(81 m large-span conversion,conversion platform overload).Through the analysis on the key points and difficulties in the construction of large-span steel truss bridges,technical measures such as leaving extra-long structural joints,choosing the timing of the conversion floor slab pouring,and setting up the conversion floor slab post-pouring belt,etc.,with simulation analysis of construction process,related technology is refined.

关 键 词：大跨度 钢结构 转换桁架 

分 类 号：TU74[建筑科学—建筑技术科学]