（北京市建筑设计研究院有限公司， 北京 100045）

［摘要］安泰广场1#楼结构高度为201-15m，2#楼结构高度为84-5～94-1m，均采用钢筋混凝土框架核心筒结构体系；3#楼结构高度为49～91m，采用钢筋混凝土框架-剪力墙结构体系；2#，3#楼在结构高度70～90m间相邻两侧分别悬挑9m钢桁架连桥。采用SATWE，MIDAS/Building软件对结构进行小震弹性对比分析，采用ABAQUS软件对结构进行大震弹塑性时程分析。结果表明，通过对1#楼重要部位设置构造钢骨、控制轴压比等加强措施，结构整体延性满足要求，结构能够实现抗震性能目标并达到多道抗震防线设计要求；通过确定2#，3#楼悬挑桁架的竖向地震作用放大系数及悬挑桁架端部最大相对位移，可以合理确定防撞缝宽度，从而确保中、大震下悬挑桁架及主体相关区域构件安全。

［关键词］安泰广场； 超高层建筑； 抗震性能化设计； 弹塑性分析； 悬挑桁架

中图分类号：TU973, TU351文献标识码：A文章编号：1002-848X(2016)17-0068-06

Structural seismic design on Antai Square

Li Qian, Chen Xiaoda, Wei Dong

（Beijing Institute of Architectural Design, Beijing 100045, China）

Abstract:The structural height of 1# building of Antai Square is 201-15m, the structural height of 2# building is 84-5～94-1m, 1# building and 2# building both adopt the reinforced concrete frame-corewall structural system. The structural height of 3# building is 49～91m, and the reinforced concrete frame-shear wall structural system is adopted. The steel truss connecting bridge structures have 9m-long cantilevers set up between two sides of 1#, 2# building at 70～90m height. Elasticity comparison analyses on the structure under frequent earthquake were provided by programs of SATWE and MIDAS/Building. Elastic-plastic time-history analysis under rare earthquake was provided by ABAQUS program. The results show that with reinforcement measures of setting steel construction and controlling the axial compression ratio at important parts of 1# building, the requirement of ductility of the overall structure is met, and the structure can realize seismic performance objectives and meet the requirements of multi-channel seismic line design. Vertical earthquake amplification coefficient of the cantilever truss and maximum relative displacement of cantilever truss end of 2# and 3# buildings are determined, which can reasonably determine the anti-collision joint width, so as to ensure the safety of the components of cantilever truss and the related region.

Keywords:Antai Square; super high-rise building; performance-based seismic design; elastic-plastic analysis; cantilever truss

作者简介：李芊，硕士，工程师，Email: liqian@biad.com.cn。