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(湖南省建筑設(shè)計(jì)院集團(tuán)股份有限公司, 長(zhǎng)沙 410012)

摘要: 為了分析長(zhǎng)沙黃花國(guó)際機(jī)場(chǎng) T2 航站樓出發(fā)大廳鋼屋蓋的抗連續(xù)倒塌性能,采用了拆除構(gòu)件法,在 MIDASGen 上建立了屋蓋大跨度鋼框架結(jié)構(gòu)的三維有限元模型,利用線性靜力分析方法計(jì)算關(guān)鍵構(gòu)件拆除后剩余結(jié)構(gòu)的應(yīng)力和變形,對(duì)結(jié)構(gòu)進(jìn)行連續(xù)倒塌風(fēng)險(xiǎn)評(píng)估。 分析結(jié)果表明:長(zhǎng)沙黃花國(guó)際機(jī)場(chǎng) T2 航站樓出發(fā)大廳屋蓋鋼結(jié)構(gòu)具有良好的抗連續(xù)倒塌能力,當(dāng)單根關(guān)鍵構(gòu)件失效時(shí),剩余結(jié)構(gòu)都能保持安全狀態(tài)不會(huì)發(fā)生連續(xù)倒塌,雙 V 形鋼柱具有較大的安全儲(chǔ)備,不會(huì)因?yàn)閱蝹?cè)結(jié)構(gòu)破壞導(dǎo)致整體柱失效;內(nèi)部圓柱相較于雙 V 形鋼柱對(duì)結(jié)構(gòu)的抗連續(xù)倒塌性能影響較大;C1 上方橫向腹桿、A3 上方縱向腹桿和雙 V 形鋼柱上方縱向弦桿為結(jié)構(gòu)的薄弱部位,后續(xù)的管理中針對(duì)這些位置要采取相應(yīng)的加固措施。

關(guān)鍵詞: 長(zhǎng)沙黃花國(guó)際機(jī)場(chǎng); 大跨度鋼框架結(jié)構(gòu); 防連續(xù)倒塌; 拆除構(gòu)件法; 靜力分析法

中圖分類號(hào):TU391 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)22-0007-04

DOI:10. 19701 / j. jzjg. ZJ220061

Analysis of anti-progressive collapse resistance of departure hall steel floor of T2 terminal building of Huanghua International Airport in Changsha

FANG Hui, XIA Xinhong

(Hunan Architectural Design Institute Group Co. , Ltd. , Changsha 410012, China)

Abstract: In order to analyze the anti-progressive collapse resistance of the departure hall steel floor of T2 terminal buildingof Huanghua International Airport in Changsha, the member removal method was adopted, and the three-dimensional finiteelement model of the large-span steel frame roof structure was established using MIDAS Gen. The linear static analysismethod was used to calculate the stress and deformation of the remaining structure after the demolition of key members, andthe progressive collapse risk of the structure was evaluated. The analysis results show that the departure hall steel floor ofT2 terminal building of Huanghua International Airport in Changsha has good resistance to anti-progressive collapse. Whena single key member fails, the remaining structure can maintain a safe state without progressive collapse, and the double Vshaped column has a large safety reserve and will not lead to the failure of the whole column due to the damage of one sidestructure. Compared with double V-shaped columns, the internal circular columns have a greater impact on the antiprogressive collapse resistance of the structure; The transverse web member above C1, the longitudinal web member aboveA3 and the longitudinal chord above the double V-shaped column are the weak parts of the structure. Correspondingreinforcement measures shall be taken for these positions in the subsequent management.

Keywords:Huanghua International Airport in Changsha; large-span steel frame structure; anti-progressive collapse;member removal method; static analysis method

∗湖南省建筑設(shè)計(jì)院集團(tuán)股份有限公司科技研發(fā)課題(KY0200-0000-2009-0237)。

第一作者:方輝,博士,研究員級(jí)高級(jí)工程師,主要從事鋼結(jié)構(gòu)、超高層建筑、裝配式建筑設(shè)計(jì),Email:fangh@ hnadi. com. cn。

[引用本文] 方輝,夏心紅. 長(zhǎng)沙黃花國(guó)際機(jī)場(chǎng) T2 航站樓出發(fā)大廳鋼屋蓋抗連續(xù)倒塌分析[ J]. 建筑結(jié)構(gòu),2022,52(22):7-10,78. FANG Hui,XIA Xinhong. Analysis of anti-progressive collapse resistance of departure hall steel floor ofT2 terminal building of Huanghua International Airport in Changsha[J]. Building Structure,2022,52(22):7-10,78.