（上海联创建筑设计有限公司， 上海 200093）

［摘要］万华化学研究中心上海基地建设项目为6塔连体复杂高层建筑。各单体存在体型复杂、竖向抗侧力构件不连续和侧向刚度不规则等多项超限内容，各塔楼之间在不同楼层由高空连廊搭接，连廊采用弱连接形式，塔楼裙房以上整体外挑尺寸最远端为13-5m，大悬挑部分采用钢拉杆悬挂结构方案。根据工程的特点及超限情况，确定结构的性能化抗震设计目标，对各塔楼进行小震弹性分析、弹性时程分析、静力弹塑性分析，并对钢拉杆悬挂结构及连廊结构进行了设计分析。分析结果表明，整体结构各项指标均满足规范要求，结构性能状况满足抗震性能化设计目标。

［关键词］复杂高层建筑； 多塔楼； 悬挂结构； 弱连体结构； 性能设计

中图分类号：TU318， TU973文献标识码：A文章编号：1002-848X(2017)05-0043-07

Structural design of a complex high-rise multi-tower building with weak connection

Jiang He

(Shanghai United Design Group Co.,  Ltd.,  Shanghai 200093, China)

Abstract:Wanhua Chemical Research Center Project located in Shanghai is a complex high-rise building composed of six connected towers. Each single tower has multiple out-of-code problems such as complex shape, vertical lateral-resistant member discontinuousness and lateral stiffness irregularity. In addition, towers are connected by skybridges between these towers at different floors and skybridges adopt weakly connected form. The overall cantilever length of the building above the podium is 13-5m at the farthest end, and large cantilever part adopts steel rod suspension structural scheme. According to the engineering characteristics and out-of-code conditions, the performance-based seismic design goals of the structure were determined. Elastic analysis under frequent earthquake, elastic time-history analysis, and pushover analysis were carried out, and the steel rod suspension structure and skybridges were analyzed and designed. The analysis result shows that all the indicators of the whole structure meet the demands of codes and the structural performance condition meet perfectly performance-based seismic design goals.

Keywords:complex high-rise building; multi-tower; suspension structure; weakly connected structure; performance design

作者简介：江河，本科，工程师，Email：moonjianghe@163.com。