（艾奕康咨询（深圳）有限公司北京分公司， 北京 100025）

【摘要】  西安迈科商业中心项目是一个超限高层连体结构，采用了钢框架-钢中心支撑筒体结构体系，其中核心筒由密集布置的钢管混凝土框架柱+钢中心支撑+钢梁+耗能梁组成，外框架由钢管混凝土柱+钢梁组成，两个两层高钢桁架将两塔楼连接在一起，在连体层和连体下一层沿外框架柱布置封闭腰桁架，形成结构加强层。主体结构具有平面不规则、连接体连接位置高、跨度大、两塔楼平面位置复杂等特性。本文主要介绍该连体结构设计的若干关键要点。

【关键词】  连体结构； 钢中心支撑； 剪重比限值； 连桥桁架； 节点有限元分析。

中图分类号：  TU318+.2     文献标识码：A        文章编号：14S1103

作者简介：王福安，硕士，一级注册结构工程师，Email：fuan.wang@aecom.com。

Structural key design points for Xi’an Maike commercial center project

Wang Fuan, Long Huiyuan, Liu Chen, Zuo Dandan

 (AECOM Consulting (Shenzhen) Co. , Ltd. , Beijing Branch Office, Beijing 100025)

Abstract: Xi’an Maike commercial center is a high-rise connected structure, which using steel framing-steel concentrically brace core system, where the core composed of close CFT columns, steel concentrically brace, steel beam and energy consumption beam, the outer framing composed of CFT columns and steel beams, two steel trusses which have two stories connected the two towers together, the belt truss arranged at the outer layer of the frame column in the connect level and below level, forming a structural reinforcement layer. The structure has the following characteristics: irregular plan, the steel truss connecting the two towers in the high position and with long span, complex plan, and so on. The paper describes the key design points of the connected tower.

Keywords: Connected structure; steel concentrically brace core; the limit of the shear-weight ratio; bridge truss; node FEM analysis.