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（1 湖南省建筑設(shè)計(jì)院有限公司， 長(zhǎng)沙 410012；  2 東南大學(xué)土木工程學(xué)院， 南京 211189）

［摘要］對(duì)大成俄羅斯馬戲城主館屋蓋弦支穹頂結(jié)構(gòu)進(jìn)行考慮初始缺陷的雙重非線性全過程分析，得到結(jié)構(gòu)屈曲荷載系數(shù)-位移曲線。采用非線性動(dòng)力分析方法，對(duì)斷索后屋蓋結(jié)構(gòu)的動(dòng)力響應(yīng)進(jìn)行了詳細(xì)分析，以此評(píng)估結(jié)構(gòu)的抗連續(xù)倒塌性能。結(jié)果表明，結(jié)構(gòu)的穩(wěn)定性和抗連續(xù)倒塌能力均滿足要求。對(duì)弦支穹頂結(jié)構(gòu)的預(yù)應(yīng)力張拉過程進(jìn)行了施工模擬分析，確定了合理的初始張力和張拉順序，并計(jì)算了預(yù)應(yīng)力降低的程度。

［關(guān)鍵詞］弦支穹頂； 雙重非線性； 抗連續(xù)倒塌； 施工模擬分析

中圖分類號(hào)：TU394文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)20-0054-05

.Analysis on the stability, progressive collapse resistance and construction simulation of the roof structure of  Dacheng Russian Circus City main pavilion in Zhangjiajie

CHEN Feng1, PAN Rui2, WANG Siqing1

(1 Hunan Provincial Architectural Design Institute Co., Ltd., Changsha 410012, China;2 School of Civil Engineering, Southeast University, Nanjing 211189, China)

Abstract:The dual nonlinear full-process analysis of the suspendome structure of  Dacheng Russian Circus City Hall main pavillion was carried out with the initial imperfection into account, and  structural buckling load coefficient-displacement curve was obtained. The nonlinear dynamic analysis method was used to analyze  the dynamic response of the cable-broken roof structure in detail and to evaluate the progressive collapse resistance of the structure. The results show that the stability and the progressive collapse resisting capacity both can meet the requirements. The construction simulation analysis of the prestressing process of the suspendome structure was also conducted. The reasonable initial tension and tension sequence were determined, and the degree of prestress loss was calculated.

Keywords:suspendome； dual nonlinear； progressive collapse resistance； construction simulation analysis

作者簡(jiǎn)介：陳豐，碩士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:21562128@qq.com。