（1 美国H+P建筑结构事务所， 上海 200041； 2 美国H+P建筑结构事务所， 芝加哥 60654）

［摘要］银川绿地中心超高层项目包括两栋高301m的塔楼。结构体系采用由伸臂桁架连接的型钢混凝土外框架+钢筋混凝土核心筒组成的混合结构，有效地抵抗由地震作用和风荷载产生的巨大侧向力。采用ETABS，PMSAP及PERFORM 3D 计算软件对结构进行了弹性分析及弹塑性分析，实现抗震性能化设计，从而满足规范及超限审查专家的要求。

［关键词］银川绿地中心； 超高层建筑结构； 抗震性能化设计； 弹塑性分析

中图分类号： TU318 文献标识码： A文章编号：  1002-848X(2016)S1-0001-05

Highrise structural design of the Yinchuan Greenland Center

Zhao Yantong1， Swanson James2， Ching Wilson2， Lim Jimmy2

(1 Halvorson and Partners, Shanghai 200041, China; 2 Halvorson and Partners, Chicago 60654, USA)

Abstract: The Yinchuan Greenland Center includes two 301m towers. The structural system of each tower is a composite system, with a center core wall linked to steel reinforced concrete exterior columns through outrigger trusses, to effectively resist large lateral loads caused by earthquake and wind. Programs ETABS, PMSAP and PERFORM 3D were used for elastic and elasto-plastic analyses, and performance based seismic design to meet the requirements of the building codes and the comments provided by the review experts. 

Keywords: Yinchuan Greenland Center； high-rise building structure; performance based seismic design; elasto-plastic analysis

作者简介： 赵延彤，博士，美国注册结构工程师，Email:yzhao@hpse.com。