（1 上海建筑设计研究院有限公司上海建筑空间结构工程技术研究中心，  上海 200041；2 上海市工程结构安全重点实验室上海市建筑科学研究院， 上海 200032）

［摘要］上海图书馆东馆结构跨度和外围悬挑均较大，柱网尺寸为16-8m×16-8m，外围最大悬挑16-8m。屋顶设置悬挂桁架，并通过吊柱悬挂下部5层悬挑区荷载。介绍了结构体系特点，并结合建筑净高、外观及设备要求，充分利用结构特点，合理对剪力墙开洞，对实腹梁进行开洞形成空腹桁架框架梁，实现建筑与结构完美统一。对一个柱网范围楼面梁布置方式进行研究，对结构进行抗震性能化设计，得到屋顶钢桁架、吊柱及剪力墙抗震性能，并对吊柱断裂进行分析，通过设置TMD技术可有效解决悬挑区楼面振动舒适度问题。

［关键词］上海图书馆东馆； 大悬挑结构； 悬挂桁架； 抗震性能化分析； 空腹桁架框架梁； 舒适度

中图分类号：TU393-3文献标识码：A文章编号：1002-848X(2019)23-0026-07

Research on key technologies of structural design of Shanghai East Library

Li Yaming1， Li Ruixiong1， Jia Shuizhong1, Jiang Qi2， Xiao Kui1

(1  Science & Technology Comission of Shanghai  Municipality, Shanghai Institute of Architectural Design and Research Co., Ltd., Shanghai, 200041, China; 2 Shanghai Key Laboratory of Engineering Structure Safety， SRIBS，Shanghai Research Institute of Building  Sciences, Shanghai 200032, China)

Abstract:The structure span and peripheral cantilever of  Shanghai East Library are relatively large. The size of the column net is 16-8m×16-8m, and the largest cantilever is 16-8m. The roof is provided with a suspension truss and the loads on lower 5 layers of cantilevered area are suspended by the suspension columns. The characteristics of the structural system were introduced. Considering the requirements of net building height, appearance and equipment, the structural features were fully used to reasonably open holes on the shear wall and open the holes on the solid web beams to form the open web truss frame beam to achieve perfect integration of the building and structure. The layout of the floor beams in a column grid was studied, and the seismic performance design of the structure was carried out. The seismic behavior of the roof steel truss, the suspension column and the shear wall was obtained, and the fracture of the suspension column was analyzed. The TMD technology could effectively solve the problem of vibration comfort degree of the floor in the cantilever area.

Keywords:Shanghai East Library; large cantilever structure; suspension truss; performance-based seismic design; open web truss frame beam; comfort degree

作者简介：李亚明，教授级高级工程师，Email: liym@isaarchitecture.com。