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(北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045)

［摘要］北昆國(guó)際文化藝術(shù)中心項(xiàng)目主要功能為大劇場(chǎng)、小劇場(chǎng)、文化服務(wù)用房。因用地緊張，采用豎向分層布置，三層和四層的轉(zhuǎn)換桁架實(shí)現(xiàn)了下部劇場(chǎng)空間的大跨度轉(zhuǎn)換并支承上部辦公服務(wù)用房，轉(zhuǎn)換層以下采用鋼框架（鋼管混凝土柱）-組合剪力墻（型鋼混凝土剪力墻）結(jié)構(gòu)體系，轉(zhuǎn)換層以上采用鋼框架-支撐結(jié)構(gòu)體系。主要介紹了多級(jí)轉(zhuǎn)換桁架系統(tǒng)在中大震時(shí)的受力和變形分析；通過對(duì)轉(zhuǎn)換桁架在不同荷載工況下的傳力路徑分析，對(duì)復(fù)雜轉(zhuǎn)換結(jié)構(gòu)的計(jì)算結(jié)果進(jìn)行可靠性判斷；對(duì)轉(zhuǎn)換桁架及懸挑空腹桁架采用豎向地震系數(shù)法和反應(yīng)譜法進(jìn)行對(duì)比分析；對(duì)轉(zhuǎn)換桁架進(jìn)行抗連續(xù)倒塌分析；針對(duì)復(fù)雜多級(jí)跨層轉(zhuǎn)換進(jìn)行特殊定義的施工模擬分析；根據(jù)性能化設(shè)計(jì)要求，對(duì)結(jié)構(gòu)進(jìn)行大震動(dòng)力彈塑性時(shí)程分析。結(jié)果表明，結(jié)構(gòu)布置合理，結(jié)構(gòu)體系安全可靠。 

［關(guān)鍵詞］轉(zhuǎn)換結(jié)構(gòu)；多級(jí)轉(zhuǎn)換桁架；抗連續(xù)倒塌分析；施工模擬分析；大震動(dòng)力彈塑性分析 

中圖分類號(hào)：TU398+.9 文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)19-0042-07

 Analysis of difficulties in structural design of Beikun International Culture and Art Center 

QU  Gang,  YU  Donghui,  Lv  Guang,  WANG  Xinxin,  HOU  Yan 

(Beijing Institute of Architectural Design, Beijing 100045， China) 

Abstract: The main functions of Beikun International Cultural and Art Center project are large theater, small theater, cultural service room. Due to the tight land use, a vertical layered layout is adopted, and the large-span conversion of the lower theater space is realized by using three-story and four-story transfer trusses, which support the upper office service rooms. Steel frame (concrete filled steel tubular column)-composite shear wall (steel reinforced concrete shear wall) structure system is adopted below the transfer floor, and steel frame-braced structure system is adopted above the transfer floor. The analysis of force and deformation of the multi-stage transfer truss system during medium and large earthquakes was mainly introduced. The reliability of the calculation results of the complex transfer truss can be judged by analyzing the force transmission path of the transfer truss under different load conditions. The vertical seismic coefficient method and response spectrum method were used to analyze the transfer trusses and overhanging vierendeel trusses. The continuous collapse resistance of the transfer trusses was analyzed. Specially defined construction simulation analysis for complex multi-level cross-story conversion was carried out. According to the requirement of performance-based design, the dynamic elastoplastic time-history analysis of the structure under large earthquake was carried out. The results show that the structure layout is reasonable, the structure system is safe and reliable. 

Keywords:transfer structure； multi-stage transfer truss； anti-continuous collapse analysis； construction simulation analysis； large earthquake dynamic elastoplastic analysis

作者簡(jiǎn)介：曲罡，碩士，高級(jí)工程師，Email：605620859@qq.com。