鄂尔多斯广场南塔楼结构抗震设计
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（北京市建筑设计研究院有限公司， 北京 100045）
［摘要］鄂尔多斯广场南塔楼结构高166.7m，采用钢管混凝土柱框架+钢筋混凝土核心筒+环带桁架结构体系。在高区避难层设置环带桁架作为结构加强层，提高了结构整体抗侧刚度。介绍本工程超限内容、抗震设防目标、结构体系选型及特点。采用SATWE和MIDAS/Building两种软件对结构进行了小震弹性对比分析，采用ABAQUS软件对结构进行了大震弹塑性时程分析，并依据分析结果，对结构各重要部位进行了加强，使结构实现抗震性能目标并达到了多道抗震防线的设计要求。［关键词］超高层建筑; 环带桁架; 混合结构; 抗震性能设计; 弹塑性分析中图分类号：TU973.13,TU351 文献标识码：A 文章编号：1002-848X(2015)18-0035-06
Structural seismic design on the South Tower of Erdos SquareWei Dong, Wei Liqiang, Zhou Wenyuan, Zhang Xu, Wang Zhigang, Li Huafeng（Beijing Institute of Architectural Design, Beijing 100045, China）Abstract: The structural height of South Tower of Erdos Square is 166.7m, and structural system of concrete-filled steel tube column frame, reinforced concrete core wall and belt truss is adopted. To enhance the lateral-force-resisting stiffness, belt trusses are used at refuge story in the high zone as the structural strengthening layer. The out-of-code items, seismic fortification goals and structural system selection and features were introduced. Elasticity analyses under frequent earthquake were carried out by two different kinds of finite-element software SATWE and MIDAS/Building. Elastic-plastic time-history analysis under the rare earthquake was carried out by software ABAQUS. According to the analysis results, the critical parts were strengthened to implement the seismic performance objectives and multi-line to defend earthquake.Keywords: super high-rise building; belt truss; mixed structure; performance-based seismic design; elastic-plastic analysis
作者简介：卫东，博士，教授级高级工程师，一级注册结构工程师，Email:weidong@biad.com.cn。
