- 摘 要
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（1 北京市建筑設(shè)計研究院有限公司， 北京 100045；2 清華大學(xué)土木工程系， 北京 100080）
［摘要］北京CBD文化藝術(shù)中心建筑功能為劇場、大型宴會廳和展廳等，主體結(jié)構(gòu)為大跨度鋼框架支撐結(jié)構(gòu)體系。建筑東西立面呈平行四邊形形狀，在屋頂層南北兩側(cè)設(shè)置懸挑鋼桁架懸掛2層及以上各層外挑部分。結(jié)構(gòu)體系中還存在局部轉(zhuǎn)換、局部拔柱、多塔連體、樓板開大洞等豎向和平面不規(guī)則抗震超限內(nèi)容。為此進行了多軟件比較分析，彈性和彈塑性時程分析；合理設(shè)置了屈曲約束支撐，分別對整體結(jié)構(gòu)和局部構(gòu)件采取了有效的加強措施，使結(jié)構(gòu)具有良好的抗震性能。
［關(guān)鍵詞］懸挑懸掛結(jié)構(gòu)； 彈塑性時程分析； 屈曲約束支撐；大跨度鋼框架支撐結(jié)構(gòu)
中圖分類號：TU318文獻標(biāo)識碼：A文章編號：1002-848X(2018)03-0068-05
Seismic-resistant and out-of-code structural design of CBD Culture & Art Center in Beijing
Chang Weihua1, Wu Jiong1, Li Zelin2, Gong Zhenchao1, Wang Guohua1, Yang Weibiao1
(1 Beijing Institute of Architectural Design Co., Ltd., Beijing 100045, China; 2 Department of Civil Engineering, Tsinghua University, Beijing 100080, China)
Abstract:The architectural functions of the CBD Culture & Art Center in Beijing include a theatre, large banquet halls and exhibition halls, etc. Its main structure is a large-span and braced-steel frame system, with the shape of a parallelogram on its east and west facades. On the top floor, cantilever steel trusses were set in the north and south directions, to suspend the cantilever beams of the second and upper floors. Considering its irregular planes and vertical arrangements, such as the transfer structure, pillar elimination for large spaces, large slab openings on multiple floors, and multi-tower connection, the structure system presents several features that didn′t comply with seismic-resistant codes. Therefore, multi-software comparison and analysis, as well as elastic & elastic-plastic time-history analysis were made, reasonable BRBs (buckling restrained braces) were set and seismic-resistant enhancements were applied for the integral structure and specific architectural components, to ensure the excellent seismic-resistant performance of the structure.
Keywords:cantilever and suspension structure; elastic-plastic time-history analysis; BRB; large-span and braced-steel frame system
作者簡介：常為華，碩士，高級工程師，Email:biad_changwh@163.com。
