12
DO1;10.7672/sgjs2016170012
施工技术
CONSTRUCTION TECHNOLOGY
2016年9月上第45卷第17期
腾讯（北京）总部大楼大悬挑钢结构向心关节轴承
节点制作与安装技术*
张宝燕，周进兵，张浩
（中建三局第一建设工程有限资任公司，潮北式汉430048）
【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42000kN，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
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。
【关键调】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
【中图分类号】TU391
【文献标识码】A
【文章编号】1002-8498（2016）17-0012-05
ManufactureandInstallationTechnologyofRadialSphericalPlain
BearingJointforLargeCantileverSteel Structure of
Tencent(Beijing)Headquarters Building
Zhang Baoyan, Zhou Jinbing, Zhang Hao
(China Construction Third Bureau First Engineering Co. ,Lad.,Wuhan,Hubei430048,China)
Abstract: 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. Dificulty 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.
Key words: steel structures; large cantilever steel structures; self-lubricating radial spherical plain bearing;finite element analysis ;installation
0
引言
建筑悬挑最大跨度不断被剧新，大悬挑结构对竖向地震较敏感，一般采取减少该结构部位的质量或释放节点处部分约束等措施，来减轻地震对结构的影响。为实现释放节点处约束的目标，人们将机
*中建三局科技研发课题（CSCEC3B-2016-5）
【作奢第介】张宝蒸，项目总工程师，高级工程师，E-mail；781811526@qq.eom
【收稿日期】2016-06-28【修订日期】2016-08-04 万方数据
械领域的销轴式铰节点、万向球铰节点和向心关节轴承节点等节点形式应用于建筑工程中。《钢结构设计规范》GB50017—2003、《钢结构工程施工规范》 GB50755一2012、《钢结构工程施工质量验收规范》 GB50205一2001均未对建筑用向心关节轴承节点的设计、制作、安装等有明确规定。
腾讯（北京）总部大楼采用的向心关节轴承节点具有以下特点：自润滑关节轴承；最大轴向静力