椭圆形大跨度弦支穹顶钢屋盖综合施工技术  

Comprehensive Construction Technology of Oval Large-span Chord Supported Dome Steel Roof

作　　者：张永坡[1] 张青山[1] 刘杰[1] ZHANG Yongpo;ZHANG Qingshan;LIU Jie(Tianjin Sanjian Construction Engineering Co.,Ltd.,Tianjin 300170,China)

机构地区：[1]天津三建建筑工程有限公司,天津300170

出　　处：《施工技术（中英文）》2022年第8期18-22,共5页Construction Technology

摘　　要：天津中医药大学新建体育馆屋盖采用弦支穹顶结构,网壳球节点标高多变,支撑架体顶端标高不一致,并需反复调整。经多种架体方案优化,采用盘扣式脚手架。为避免施工过程中支撑架体杆件与预应力构件碰撞,利用BIM技术建立网架和支撑架体模型,进行碰撞检验。以该工程为背景,介绍了支撑架体搭设、弦支穹顶结构拼装焊接、预应力施加及过程中关键杆件监测等施工过程。通过有限元计算和实际工程监测对比,显示出该施工方法的优越性。The roof of the new gymnasium of Tianjin University of Traditional Chinese Medicine adopts chord supported dome structure, the changeable elevation of the spherical joint of the reticulated shell, the top elevation of the support is inconsistent and needs to be adjusted repeatedly. After a variety of support schemes are optimized, the disk lock scaffold is adopted. In order to avoid the collision between the members of the support and the prestressed members in the construction process, the BIM technology is used to establish the space frame and support model for collision inspection. Taking the project as the background, the construction processes such as the erection of support, the assembly and welding of chord dome structure, the application of prestress and the monitoring of key members in the process are introduced. Through the comparison between finite element calculation and actual engineering monitoring, the advantages of this construction method are shown.

关 键 词：钢结构 屋盖 桁架 预应力 拼装 监测 

分 类 号：TU758.11[建筑科学—建筑技术科学]