(1 中国建筑西南设计研究院有限公司, 成都 610042;2 广州南沙重点项目推进办公室, 广州 511458)

摘要: 广州南沙青少年宫主体采用钢筋混凝土框架-剪力墙结构体系,平、立面及空间关系均较为复杂. 为适应建筑功能及造型需要,结构设计在中庭入口处设置了跨度约 55m 的弧形桁架,支承两层约 46m×26m 的正交钢网格空腹桁架楼盖. 室内二层新颖独特的 S 形反对称连廊,采用单侧悬挂方式使结构内力自平衡;在突出各肢结构适当位置设置屈曲约束支撑(BRB) ,改善了结构扭转效应,同时也提高了中大震下的抗震性能. 重点论述了结构选型思路,以及针对中庭大跨无柱空间、S 形悬挂连廊、超长楼盖等结构复杂情况采取的计算分析和性能化加强措施.结果表明:结构整体屈服机制合理,实现了多道抗震设防目标;中庭大跨无柱空间结构协同受力良好,结构安全度高;单侧悬挂 S 形连廊受力合理,舒适度满足要求.

关键词: 框架-剪力墙结构; 正交钢网格空腹桁架; 大跨弧形桁架; S 形悬挂连廊; 大悬挑; 抗震性能

中图分类号:TU375 文献标志码:A 文章编号:1002-848X(2022)05-0134-07

DOI:10. 19701 / j. jzjg. CSWADI2033

Structural design of Guangzhou Nansha Youth Palace

CHEN Yuan1, LIU Yifeng1, XING Yinhang1, DENG Putian1, LI Changhong1,FENG Zhongwei1, PAN Dapeng2

(1 China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610042, China;2 Guangzhou Nansha Important Project Promotion Office, Guangzhou 511458, China)

Abstract: The main body of Guangzhou Nansha Youth Palace adopts the reinforced concrete frame-shear wall structuresystem, and the plane, elevation and spatial relationship are all complex. In order to meet the needs of building functionsand modeling, the arc truss with a span of about 55m is set at the entrance of the atrium to support two floors of about 46m×26m orthogonal steel grid open web truss floor. The S-shaped antisymmetric continuous corridor on the second floor adoptsunilateral suspension and the internal force of the structure can be self-balanced, which is novel and unique. The bucklingrestrained brace(BRB) is set in the appropriate position of each limb structure to improve the torsion effect of the structure.Meanwhile the seismic performance under medium and large earthquakes is improved. The idea of structural selection, andthe calculation analysis and performance strengthening measures for the complex situation of atrium′s large-span non-columnspace, S-shaped suspension corridor and super-long floor were mainly discussed. The results show that the overall yieldmechanism of the structure is reasonable, and multi-defence system of seismic engineering goal is achieved. The large-spannon-column space structure of the atrium has good synergistic stress and high structural safety; the force of unilateralsuspension S-shaped corridor is reliable, and its comfort degree meets the requirements.

Keywords: frame-shear wall structure; orthogonal steel grid hollow truss; large-span arc-truss; S-shaped suspensioncorridor; large cantilever; seismic performance

第一作者:陈远,硕士,高级工程师,一级注册结构工程师,主要从事建筑结构设计,Email:854452560@ qq. com.

[引用本文] 陈远,刘宜丰,邢银行,等. 广州南沙青少年宫结构设计[ J] . 建筑结构,2022,52( 5) :134-140. CHENYuan,LIU Yifeng,XING Yinhang,et al. Structural design of Guangzhou Nansha Youth Palace [ J] . Building Structure,2022, 52(5) :134-140.