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泰禾长安中心连体塔楼结构设计与研究
田淑明1,罗超英2,傅宁1
摘 要

(1 泰禾集团设计研发部,  北京  100022;  2 约翰马丁工程顾问(北京)有限公司,  北京  100020)

[摘要]泰禾长安中心连体塔楼为一地上21层、地下5层的斜交连体结构,结构高98-7m,埋深23-3m,顶部4层为25m跨连体,塔楼采用钢筋混凝土框架-核心筒结构,连体采用钢结构。八宝山断裂穿过场地,开展了地震安评确定地震作用,并对安评成果的应用进行了探讨。建筑形体复杂,通过风洞试验确定幕墙和结构风荷载,给出了风荷载确定方法。结构顶部有大跨连体和大悬挑,下部有多层裙房,采取合理措施控制了结构的不规则性,用性能化设计方法来保证抗震安全,重点比较了连体楼盖的剪力估算方法。基底为不均匀地基,综合安评、初勘及详勘成果,明确了基底土层特性,考虑荷载大小、差异沉降及经济性等因素确定了主楼和裙楼的地基基础方案,通过专项论证优化了抗浮设防水位,解决了裙房的整体抗浮问题。

[关键词]连体结构; 地震安评; 风洞试验; 地基基础设计; 抗浮设防水位

中图分类号:TU318, TU973文献标识码:A文章编号:1002-848X(2017)11-0039-09

 

Structural design and research on connected tower structure of Tahoe Chang′an Center

Tian Shuming1, Luo Chaoying2, Fu Ning1

(1 Department of Design, Research & Development, Tahoe Group, Beijing 100022, China;

2 John A. Martin & Associates (Beijing), Ltd., Beijing 100020, China)

Abstract:Connected tower of Tahoe Chang′an Center is a 98-7m-high 21-story diagonally connected structure with 5-story 23-3m-depth basement, with a 25m-span 4-story connected part at the top of the building. The tower building adopts reinforced concrete frame-corewall structure and the connected part adopts steel structure. The site is cut across by Babao Mount fracture, so earthquake motion action was determined by seismic safety assessment. The application of earthquake safety assessment results was discussed. The building shape is complex, so wind load on curtain wall and the structure was determined through wind tunnel test, and wind load determining method was provided. There are large-cantilever parts and large-span parts on top of the structure and there are multi-story podiums at the bottom of the structure. Irregularities of the structure were controlled by reasonable measures, and performance-based seismic design method was used to ensure seismic safety and estimating  methods for seismic shear force of conjoined floor were compared particularly. There is uneven foundation at base, so safety assessment results and early survey results and detailed survey results were combined to determine the basal soil characteristics. Foundation scheme of the main building and the podiums was determined considering load, settlement difference and economic factors. The anti-floating fortification water level was optimized through expert research to solve the overall anti-floating issue of podiums.

Keywords:connected structure; seismic safety assessment; wind tunnel test; design of foundation; anti-floating fortification water level

 

作者简介:田淑明,博士,教授级高级工程师,一级注册结构工程师,注册土木工程师(岩土),Email: tianshm2011@163.com。

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