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（1 上海原構(gòu)設(shè)計(jì)咨詢有限公司， 上海 200233； 2 中國(guó)建筑上海設(shè)計(jì)研究院有限公司， 上海 200062）

［摘要］敦煌大劇院是一座具備國(guó)際專業(yè)水準(zhǔn)的大型乙等劇院,可容納1 210席，主體結(jié)構(gòu)采用鋼框架-中心支撐結(jié)構(gòu)體系，樓蓋采用現(xiàn)澆混凝土樓板，樓板采用鋼筋桁架樓承板。整體結(jié)構(gòu)平面及豎向多項(xiàng)不規(guī)則，結(jié)合《建筑抗震設(shè)計(jì)規(guī)范》（GB 50011—2010）要求，采用三水準(zhǔn)、兩階段設(shè)計(jì)方法，對(duì)結(jié)構(gòu)進(jìn)行詳細(xì)的彈性和彈塑性分析。分析結(jié)果表明，整體結(jié)構(gòu)具有良好的承載和變形能力，能滿足“小震彈性，中震可修，大震不倒”的抗震性能化設(shè)計(jì)目標(biāo)，并對(duì)結(jié)構(gòu)的薄弱部位提出了有效的抗震加強(qiáng)措施。同時(shí)針對(duì)超長(zhǎng)結(jié)構(gòu)溫度應(yīng)力、樓座懸挑端舒適度、關(guān)鍵節(jié)點(diǎn)應(yīng)力、舞臺(tái)機(jī)械及聲學(xué)設(shè)計(jì)等對(duì)結(jié)構(gòu)設(shè)計(jì)的影響進(jìn)行了專項(xiàng)分析。本項(xiàng)目的研究可為其他類似全鋼結(jié)構(gòu)劇院工程的結(jié)構(gòu)設(shè)計(jì)提供參考。

［關(guān)鍵詞］敦煌大劇院； 鋼框架支撐體系； 超限結(jié)構(gòu)； 抗震性能分析； 舒適度驗(yàn)算

中圖分類號(hào)：TU398-7文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)14-0073-08

Seismic design  of Dunhuang Grand Theatre

WANG Xiaohui1, SUN Yi2, ZHAO Yanlu2

(1 YUANGOU Architects & Consultants, Shanghai 200233, China; 2 China Architecture  Shanghai Design Research Institute Co., Ltd., Shanghai 200062, China)

Abstract:Dunhuang Grand Theatre is a large-scale B-class theater with international professional standards, which can accommodate 1 210 seats. The main structure adopts a steel frame-center support structure system. The deck slab adopts cast-in-place concrete floor slab and the floor slab adopts the steel truss floor support. The overall structure has multiple irregularities in the horizontal and vertical plane. Combined with the requirements of Code for seismic design of buildings (GB 50011—2010), the elastic and elastic-plastic seismic analyses of the structure were carried out using the method of three levels and two stages. The analysis results indicate that the whole structure has good bearing and deformation ability, and it can reach the seismic performance design aims of "elasticity under small earthquake, restoration under medium earthquake and uncollapsing under large earthquake". Effective seismic strengthening measures for weak parts of the structure were put forward. At the same time, special analyses were carried out on the influence of super-long structural temperature stress, comfortable degree of the cantilevered building, key node stress, stage machinery and acoustic design on structural design. The research of the project provides reference for the structural design of other similar theater steel structure projects.

Keywords:Dunhuang Grand Theatre; steel frame-support system; out-of-code structure; seismic performance analysis; comfortable degree checking

作者簡(jiǎn)介：王曉輝，碩士，一級(jí)注冊(cè)結(jié)構(gòu)工程師，高級(jí)工程師，Email:wangxh@yuangou.design。