摘要
腾讯(北京)总部大楼悬挑达81m,采用了向心关节轴承节点,轴向静力荷载设计值为42 000k N,为国内最大的建筑用向心关节轴承。为保证其使用功能的发挥,首先从节点构造和CAE技术角度对其进行设计研究,其次从制作和施工角度对其高效施工进行研究。研究表明,CAE技术可很好地模拟分析节点受力,探索了节点承载力失效的判断准则,有效节约试验成本;增加贴板,减小中耳板板厚,降低工厂焊接难度;延伸中耳板,断开盖板,能够避免结构受力后盖板层状撕裂,同时避免焊接中耳板,保证中耳板传力路径连续;槽口快速对接技术能够提高安装工效。
Cantilever span of the building of Tencent （Beijing）Headquarters Building is 81m. The radial spherical plain bearings are used. The design value of a axial static load is 42 000kN. It is the biggest radial spherical plain bearing which is used in architecture. In order to ensure the application of the radial spherical plain bearing, firstly, the study of the design is carried out from the joint structure and CAE technology points. Secondly, the study of the efficient construction is carried out from manufacture and construction points. The results show that the application of CAE technology can save the experimental cost. The failure criteria of bearing capacity of the joint are acceptable. In order to reduce the middle ear plate thickness, double straps are increased. Difficulty of welding is reduced in the factory. In order to avoid lamellar tearing and force transferring path suspending, the middle ear plate is extended and cover plate is intermitted. The docking rabbet technology can increase installation efficiency.
出处
《施工技术》
CAS
北大核心
2016年第17期12-16,共5页
Construction Technology
基金
中建三局科技研发课题(CSCEC3B-2016-5)
关键词
钢结构
大悬挑钢结构
自润滑向心关节轴承
有限元分析
安装
steel structures
large cantilever steel structures
self-lubricating radial spherical plainbearing
finite element analysis
installation
