（中国建筑上海设计研究院有限公司， 上海 200063）

［摘要］某广场建筑由5栋塔楼、裙房及地下室组成，为大底盘多塔结构。结构高度为266m的A塔楼采用框架核心筒结构体系，结构高度为996m的B，C，D，E塔楼采用高位转换的部分框支剪力墙结构。通过对SATWE软件建立的单塔模型和MIDAS软件建立的大底盘多塔模型的计算结果分析比较，研究大底盘多塔结构的地震响应特点，得出大底盘多塔结构裙房部分承担的地震剪力明显降低，裙房以上的各塔楼地震剪力有一定程度的增大。对高位转换框支剪力墙结构进行小震弹性和大震静力弹塑性时程分析以找出结构的薄弱部位。并对转换层、框支梁、框支柱、剪力墙等薄弱部位采取有效的抗震设计措施。

［关键词］大底盘多塔结构; 高位转换; 部分框支剪力墙; 弹塑性时程分析

中图分类号：TU318     文献标识码：A     文章编号：1002-848X(2015)06-0041-05

Structural analysis of a multitower plaza building with large chassis

Yi Meiying

 (China Shanghai Architectural Design & Research Institute Co., Ltd., Shanghai 200063, China)

Abstract:A plaza building consists of five tower structures with basements and common podium  and is a multitower structure with large chassis. Atower with 266 meters structural height adopts framecore wall structural system. The other B，C，D，E towers with 996 meters structural height are partial framesupported shear wall structures with highlevel transfer stories. The seismic response characteristics of multitower structure with large chassis were analyzed through comparing the calculation results of singletower model by SATWE software and multitower model with large chassis by MIDAS software. The results show that the seismic shear force of the podium significantly reduces and the seismic shear force of the towers up the podium increases. The elastic and elastoplastic timehistory analysis under the frequent earthquake were carried out on partial framesupported shear wall structure in order to find the weak parts. The effective seismic measures were taken in parts of the transfer stories, framesupported beams, framesupporting columns and shear wall.

Keywords:multitower structure with large chassis; highlevel transfer story; partial framesupported shear wall; elastoplastic timehistory analysis

作者简介：易美英，硕士，工程师，一级注册结构工程师，Email:yimeiying_1983@163.com。

                           参考文献

［1］GB 50010—2010 混凝土结构设计规范［S］. 北京:中国建筑工业出版社，2011.

［2］王铁梦. 工程结构裂缝控制［M］. 北京：中国建筑工业出版社，1997.

［3］彭英，柯叶君，陈威文，等超长混凝土结构温差收缩效应分析及工程实践［J］.建筑结构，2010，40（10）：8690.

［4］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.

［5］吕西林.超限高层建筑工程抗震设计指南［M］. 上海：同济大学出版社,2009.

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