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(華東建筑設(shè)計(jì)研究院有限公司, 上海 200002)

摘要: 武漢長江中心 A1 地塊商業(yè)結(jié)構(gòu)平面尺寸達(dá) 185m×135m,同時(shí)還存在凹凸不規(guī)則、樓板不連續(xù)、豎向構(gòu)件不連續(xù)等超限項(xiàng),為平面和豎向不規(guī)則的超限工程. 針對(duì)項(xiàng)目的結(jié)構(gòu)設(shè)計(jì)特點(diǎn)、難點(diǎn),開展了專項(xiàng)研究. 采用鋼筋混凝土框架結(jié)構(gòu)體系,選用實(shí)腹鋼梁實(shí)現(xiàn)中庭等區(qū)域大跨結(jié)構(gòu)設(shè)計(jì). 介紹了結(jié)構(gòu)基礎(chǔ)選型;研究了提高整體結(jié)構(gòu)抗扭剛度的設(shè)計(jì)加強(qiáng)對(duì)策;分析了商業(yè)中庭內(nèi)外結(jié)構(gòu)協(xié)同工作對(duì)大跨無柱中庭梁板的設(shè)計(jì)要求. 開展了罕遇地震作用下中庭樓板抗剪承載力專項(xiàng)分析,以驗(yàn)證其滿足性能目標(biāo)要求. 論述了轉(zhuǎn)換梁轉(zhuǎn)換柱以及大跨鋼梁與鋼筋混凝土主梁連接節(jié)點(diǎn)等關(guān)鍵構(gòu)件與節(jié)點(diǎn)設(shè)計(jì);闡述了人行激勵(lì)下大跨樓面舒適度專項(xiàng)分析結(jié)果;歸納了罕遇地震下整體結(jié)構(gòu)指標(biāo)與結(jié)構(gòu)構(gòu)件的損傷情況. 目前項(xiàng)目的主體結(jié)構(gòu)已經(jīng)封頂,驗(yàn)證了分析研究及設(shè)計(jì)對(duì)策的可行性,保障了整體結(jié)構(gòu)的安全性.

關(guān)鍵詞: 武漢長江中心; 商業(yè)結(jié)構(gòu); 抗扭剛度; 中庭結(jié)構(gòu)協(xié)同; 樓面舒適度分析; 彈塑性時(shí)程分析

中圖分類號(hào):TU318+. 2 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)09-0055-07

DOI:10. 19701 / j. jzjg. 20211867

Research on large-scale commercial structure design of Wuhan Yangtze River Center

JI Jun, BAO Lianjin, CHEN Jianxing

(East China Architectural Design & Research Institute Co. , Ltd. , Shanghai 200002, China)

Abstract: The commercial structure of the A1 plot of Wuhan Yangtze River Center has a plane size of 185m × 135m.There are over-limit items such as irregular unevenness, discontinuous floor slab, discontinuous vertical components, etc. ,which is an over-limit project with plane and vertical irregularities. According to the characteristics and difficulties ofstructural design of the project, special research was carried out. The reinforced concrete frame structure system wasadopted, and the solid web steel beam was used to realize the large-span structure design in the atrium and other areas. Theselection of structural foundation was introduced. The design strengthening countermeasures to improve the torsionalstiffness of the overall structure were studied. The design requirements for the large-span column-free atrium beams andslabs for the cooperative work of the internal and external structures of the commercial atrium were analyzed. A specialanalysis of the shear bearing capacity of the atrium floor under rare earthquakes was carried out to verify that it meets theperformance target requirements. The design of key components and joints such as transfer beams, transfer columns,large-span steel beams and reinforced concrete main beams was discussed. The special analysis results of long-span floorcomfort under pedestrian excitation were expounded. Overall structural indicators and damage of structural members underrare earthquakes was summarized. At present, the main structure of the project has been capped, which verifies thefeasibility of analysis, research and design countermeasures, and ensures the safety of the overall structure.

Keywords:Wuhan Yangtze River Center; commercial structure; torsional stiffness; atrium structure synergy; floor comfortanalysis; elastoplastic time history analysis

∗上海市青年科技啟明星計(jì)劃資助項(xiàng)目(19QB1400600) ,上海市社會(huì)發(fā)展科技攻關(guān)項(xiàng)目(21DZ1204603) .

第一作者:季俊,博士,高級(jí)工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,主要從事超高層及復(fù)雜結(jié)構(gòu)設(shè)計(jì)研究,Email: jj14490@ ecadi. com.

[引用本文] 季俊,包聯(lián)進(jìn),陳建興. 武漢長江中心大型商業(yè)結(jié)構(gòu)設(shè)計(jì)研究[ J] . 建筑結(jié)構(gòu),2022,52( 9) :55-61. JIJun,BAO Lianjin,CHEN Jianxing. Research on large-scale commercial structure design of Wuhan Yangtze River Center[ J] . Building Structure,2022,52(9) :55-61.