(1 东南大学建筑设计研究院有限公司， 南京 210096； 2 东南大学土木工程学院， 南京 210096)

［摘要］苏州第二图书馆建筑造型上大下小，存在连体、大悬挑、楼板不连续等多个不规则项，属于复杂性超限的高层建筑。根据建筑内部柱网正交，外围柱双向倾斜，角部存在大悬挑的特点，采用了内部钢筋混凝土框架-剪力墙结构、外围斜柱钢框架的混合结构体系，实现了建筑造型与结构受力的高度统一。通过对结构进行性能化设计，并对外围斜柱钢框架重点部位采取针对性的加强措施，结构的各项性能指标均满足规范要求，验证了结构体系的合理性。在此基础上，系统梳理了针对大角度外倾钢框架的构造分析。 

［关键词］苏州第二图书馆； 大悬挑； 斜柱钢框架； 复杂性超限高层建筑； 混合结构体系； 预应力 

中图分类号：TU318 文献标识码：A文章编号：1002-848X(2021)11-0039-08

 Structural design of Suzhou No.2 Library 

HAN  Chongqing1,  TAO  Jianxiong2,  FU  Qiang1,  SUN  Xun1,  ZHANG  Peng1 

(1 Architects & Engineers Co., Ltd. of Southeast University， Nanjing 210096， China；2 School of Civil Engineering, Southeast University， Nanjing 210096， China) 

Abstract: Suzhou No.2 Library is a complicated out-of-code high-rise building due to multiple irregularities including the special shape of inverted cone, connected structure, large cantilever and discontinuous floor slab. The building has the characteristics of the orthogonal column gird inside the building, the two-way outward inclination of the peripheral columns and the long cantilever in the corner, and the structure adopts the hybrid structural system of interior reinforced concrete frame-shear wall structure and peripheral steel frame with inclined columns, which realizes the high unity of architectural modeling and structural mechanism. Through the performance-based design of the structure, and taking targeted strengthening measures for the key parts of the peripheral steel frame with inclined columns, all the performance indexes of the structure meet the requirements of the specification, which verifies the rationality of the structural system. On this basis, the structural analysis of the inclined steel frame with large angle was systematically summarized. 

Keywords:Suzhou No.2 Library； large cantilever； inclined column steel frame； complicated out-of-code high-rise building； hybrid structural system； prestress

作者简介：韩重庆，博士，一级注册结构工程师，研究员级高级工程师，Email:chq_han@seu.edu.cn。