异型空间结构产品研究
2015-10-21黄戴春冯尔云朱美宁靳毅马龙
黄戴春 冯尔云 朱美宁 靳毅 马龙



摘要:异型空间结构建筑产品广泛应用于大型体育馆、展览馆、游泳馆、机场、火车站、图书馆等大跨度空间结构。大跨度异型空间产品结构不规则、曲面变化多样性、突变性,受力研究分析及安装工艺复杂,借助国内外先进设计分析软件及虚拟制造安装软件,进行设计研究及虚拟设计安装研究,能够有效的进行结构优化设计,制造安装虚拟工艺研究,有效的降低设计、施工、管理成本,为企业及社会创造经济效益。
关键词:钢结构;异型空间;桁架;工艺;制作;安装
Different spatial structure products research
Abstract: the alien space structure building products are widely used in the large stadium, exhibition center, swimming pool, airports, railway stations, libraries and other large span space structures. Large-span space alien product diversity of irregular structure, surface changes, respectively, the stress analysis and complex installation process, with the analysis of domestic and foreign advanced design software and virtual manufacturing installation, design research and virtual design installation, can be effective for structure optimization design, manufacturing installation virtual technology research, effectively reduce the cost of design, construction, management, create economic benefits for the enterprise and society.
Key words: steel structure; Alien space; Truss; Process; Production; The installation
1 工程概況:
某海洋公园展览馆建筑面积为2256㎡,该工程长48m,宽47m,为单层钢结构张拉膜结构,最低檐口及屋顶标高分别为14.754m、19.700m,工程主体钢构由18根直钢管柱和4根标高不一致异型弧管钢柱及与之相贯的大跨度管桁架及异型圆管组成,异型管桁架钢梁最大跨度为48m,且为弧形椭圆线型结构,最大弦高为7.4m,最大单重为12.92吨,最大管径规格为φ325×16,异型桁架主管拼缝为带衬板全熔透焊接,主管和支管为坡口熔透焊接,由于管跨度较大,焊接拼接节点较多,容易产生焊接平面内变形及侧向变形,在制作过程中,需采取反变形措施及合理的焊接工艺进行施工,加强过程工艺控制,保证产品的焊接、外观质量及安装整体几何尺寸。屋盖由四榀大跨度管桁架预拼装组合桁架、五榀异型屋脊钢桁架、屋脊弧管支撑及四周异型弧管组成,屋面采用张拉膜结构,墙面采用玻璃幕墙进行装饰,安装精度工艺要求高,采用全焊接节点连接,施工难度大。……
