(1 华南理工大学建筑设计研究院有限公司,广州 510641;2 华南理工大学土木与交通学院,广州 510640)

摘要: 作为华南理工大学广州国际校区二期工程标志性建筑,E3 图书馆整体呈倒梯形,建筑主屋面高度 27.30m,属超限结构.建筑 3 层及以上中庭位置开设大洞,仅通过 3、4 层南北两侧连廊楼板和屋顶天窗跨度为 33.6m 的大跨度 Z 字形钢梁连接.通过 5 个结构方案比选,选用沿幕墙边布置斜柱的框架结构.斜柱倾斜角度约为 29°,与东、西、南侧外周边悬挑 2.8~ 8.4m 的内框架形成空腹桁架.斜柱在竖向荷载下产生水平分量,通过楼板应力分析对楼板进行加强.按照设定的性能目标,对结构进行弹性计算、中震验算并采用 Perform-3D 软件进行了罕遇地震作用下的弹塑性动力时程分析,根据分析结果,采取了有针对性的加强措施.

关键词: 超限结构;中庭开洞;大跨度 Z 字形钢梁;结构方案比选;斜柱;空腹桁架

中图分类号:TU973,TU318 文献标志码:A 文章编号:1002-848X(2022)17-0121-06

DOI:10.19701 / j.jzjg.20210119

Structural design of E3 Library of International Campus of South China University of Technology

ZHAO Ying1,JIANG Yi1,2,YI Weiwen1,LIU Guangshuang1,YANG Ziyue1,WU Han1

(1 Architectural Design Research Institute of SCUT,Guangzhou 510641,China;2 School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China)

Abstract: As the landmark building of phase II project of Guangzhou International Campus of South China University ofTechnology,the overall shape of the E3 Library is an inverted trapezoid and the building height of the main roof is 27.30m,and it is an out-of-code structure. There are large holes in the atrium on the 3rd floor and above of the building,which areonly connected by large-span Z-shaped steel beams with a span of 33.6m between the floor slabs on the north and south sidesof the 3rd and 4th floors and the roof skylight. Through the comparison and selection of five structural schemes,the framestructure with inclined columns arranged along the curtain wall was selected. The inclined column is inclined at an angle ofabout 29°and forms a vierendeel truss with the inner frame of 2.8~8.4m overhanging at the outer periphery of the east,westand south sides. The inclined column produces horizontal components under vertical load,and the floor was strengthened bythe floor stress analysis. According to the predefined performance objectives,elastic design and checking design underfortification earthquakes were conducted and elastic-plastic dynamic time-history analysis was conducted under rareearthquakes using Perform-3D software. According to these analysis results,pertinent strengthening measures were adopted.

Keywords:out-of-code structure;large hole in the atrium;large-span Z-shaped steel beam;comparison and selection ofstructural schemes;inclined column;vierendeel truss

∗企业横向科研基金项目(x2jzD8220300).

第一作者:赵颖,硕士,工程师,一级注册结构工程师,主要从事超高层建筑结构设计与研究,Email:591759868@ qq. com.

[引用本文] 赵颖,江毅,易伟文,等. 华南理工大学国际校区 E3 图书馆结构设计[ J]. 建筑结构,2022,52(17):121-126,98. ZHAO Ying,JIANG Yi,YI Weiwen,et al. Structural design of E3 Library of International Campus of SouthChina University of Technology[J]. Building Structure,2022,52(17):121-126,98.