(天津市建筑设计院，天津 300074)

［摘要］津湾广场9号楼为高区立面多次收进、结构复杂的超限高层建筑，采用钢筋混凝土核心筒-矩形钢管混凝土柱钢框架抗侧力结构体系，介绍了结构体系布置及关键部位的设计。采用PMSAP，ETABS软件对结构进行地震作用和风荷载作用下的计算以及弹性时程分析，对结构的关键部位及楼板应力进行计算分析，另外采用PERFORM-3D软件对结构进行非线性动力时程分析。分析结果表明：外框架和内部核心筒协同工作良好，结构各项指标都满足规范要求，关键部位可以实现中震弹性的抗震性能目标，结构设计满足预先设定的抗震性能目标，主体结构具有良好的承载和变形能力。

［关键词］津湾广场; 超限高层结构; 转换桁架; 抗震性能; 非线性动力时程分析; 混合结构

中图分类号：TU973.1      文献标识码：A      文章编号：1002-848X(2014)02-0038-05

Structural design of out-of-code high-rise No.9 building in Jinwan Square

Huang Zhaowei, Qi Lin, Zhu Xudong, Hu Xueying, Cai Haoliang, Huang Xin, Liu Tao

(Tianjin Architecture Design Institute, Tianjin 300074, China)

Abstract: The No.9 building in Jinwan Square has several setbacks of facade, which make it as a complex out-of-code high-rise structure. Its lateral force resisting system applies reinforced concrete corewall and concrete-filled steel rectangular tube frame. Structure layouts and design of  key parts were illustrated. The structure was analyzed by PMSAP and ETABS considering earthquake and wind load. Elastic time-history analysis was also analyzed. The key parts of structure and slab stress were analyzed in detail. Besides, the nonlinear dynamic time-history analysis of the structure was analyzed by PERFORM-3D. The analysis results show that outer frame and the inner corewall work well together. The whole structure indicators can meet the code requirements and the key parts of structure can keep elastic under fortification earthquake, structure design meets the pre-set seismic performance goals. The main structure has good capacity of bearing and deformation.

Keywords: Jinwan Square; out-of-code high-rise building; transfer truss; seismic performance; nonlinear dynamic time-history analysis; hybrid structure

作者简介：黄兆纬，高级工程师，结构总工程师，Email: lisahzw@sina.com。

参考文献

［1］黄兆伟，蔡浩良，胡雪瀛，等.津湾广场9号楼超限高层结构方案形成过程［J］.建筑结构，2014，44（2）：32-37.

［2］JGJ 3—2010 高层建筑混凝土结构技术规程［S］.北京：中国建筑工业出版社，2011.

［3］GB 50011—2010建筑抗震设计规范［S］.北京：中国建筑工业出版社，2010.

［4］建质［2010］109号 超限高层建筑工程抗震设防专项审查技术要点［S］.2010.

［5］GB 50009—2001建筑结构荷载规范［S］.2006年版.北京：中国建筑工业出版社，2006.

［6］周德玲，王毅，赵华，等.津湾广场9号楼转换桁架结构设计［J］.建筑结构，2014，44（2）：43-47.

［7］FEMA 356 Prestandard and commentary for the seismic rehabilitation of buildings［S］. USA: Federal Emergency Management Agency, 2000.

［8］ASCE 41-06 Seismic rehabilitation of existing buildings［S］. USA: America Society of Civil Engineers, 2007.