宋  莉，  邱韶光
    （大连城建设计研究院有限公司，大连 116011）

[摘要] 大连市民健身中心为大跨度悬挑混合结构，即钢管混凝土柱、钢梁+部分混凝土剪力墙结构体系，顶层运动场地面最大悬挑18m，通过交叉桁架与预应力梁实现悬挑部分。网球场上部采用钢骨混凝土预应力结构。采用SAP2000和PMSAP两种程序建立合理的模型，对结构进行基于性能的设计分析。在悬挑桁架端部增设TMD阻尼器，降低振动加速度，满足楼板舒适度要求。采用ABAQUS有限元分析软件，分析悬挑桁架与钢管混凝土柱相交节点应力分布，保证大震弹性。
[关键词] 大跨度悬挑；性能化设计；交叉桁架；预应力梁；TMD阻尼器
中图分类号：TU318+．2  文献标识码：A  文章编号：1002-848X(2011) Sl-0773-04

Performance-based design of the large-span cantilever structure and research of the penetrated joint in Dalian Citizen Sports Center
    Song Li, Qiu Shaoguang
    ( Dalian Institute of Urban and Architecture Design,  Dalian 116011,  China)

Abstract: Dalian Citizen Sports Center is a large-span cantilever structure system which contains CFT column, steel beam and shear wall. The maximum 18m cantilever section of the to Pfloor is realized through the cross truss and the pre-stressed beam. The pre-stressed steel-reinforced structure was applied in the tennis court. The model using SAP2000 and PMSA Pwas set up, and was carry on the corresponding analysis to the structure by performance-based design method. The tuned mass damper (TMD) is applied in the port of cantilever truss to control acceleration of the floor. The results show the floor serviceability meet the criteria in the code. The stress distribution of the intersect nodes of cantilever truss and CFT column was analyzed using ABAQUS, to ensure that they are still in flexibility in rare earthquake.
Keywords: large-span cantilever; performance-based design method; cross truss; pre-stressed beam; TMD