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(1 中國(guó)建筑西南設(shè)計(jì)研究院有限公司, 成都 610042;2 廣州南沙重點(diǎn)項(xiàng)目推進(jìn)辦公室, 廣州 511458)

摘要: 廣州南沙青少年宮主體采用鋼筋混凝土框架-剪力墻結(jié)構(gòu)體系,平、立面及空間關(guān)系均較為復(fù)雜. 為適應(yīng)建筑功能及造型需要,結(jié)構(gòu)設(shè)計(jì)在中庭入口處設(shè)置了跨度約 55m 的弧形桁架,支承兩層約 46m×26m 的正交鋼網(wǎng)格空腹桁架樓蓋. 室內(nèi)二層新穎獨(dú)特的 S 形反對(duì)稱連廊,采用單側(cè)懸掛方式使結(jié)構(gòu)內(nèi)力自平衡;在突出各肢結(jié)構(gòu)適當(dāng)位置設(shè)置屈曲約束支撐(BRB) ,改善了結(jié)構(gòu)扭轉(zhuǎn)效應(yīng),同時(shí)也提高了中大震下的抗震性能. 重點(diǎn)論述了結(jié)構(gòu)選型思路,以及針對(duì)中庭大跨無柱空間、S 形懸掛連廊、超長(zhǎng)樓蓋等結(jié)構(gòu)復(fù)雜情況采取的計(jì)算分析和性能化加強(qiáng)措施.結(jié)果表明:結(jié)構(gòu)整體屈服機(jī)制合理,實(shí)現(xiàn)了多道抗震設(shè)防目標(biāo);中庭大跨無柱空間結(jié)構(gòu)協(xié)同受力良好,結(jié)構(gòu)安全度高;單側(cè)懸掛 S 形連廊受力合理,舒適度滿足要求.

關(guān)鍵詞: 框架-剪力墻結(jié)構(gòu); 正交鋼網(wǎng)格空腹桁架; 大跨弧形桁架; S 形懸掛連廊; 大懸挑; 抗震性能

中圖分類號(hào):TU375 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):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:陳遠(yuǎn),碩士,高級(jí)工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,主要從事建筑結(jié)構(gòu)設(shè)計(jì),Email:854452560@ qq. com.

[引用本文] 陳遠(yuǎn),劉宜豐,邢銀行,等. 廣州南沙青少年宮結(jié)構(gòu)設(shè)計(jì)[ J] . 建筑結(jié)構(gòu),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.