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（北京市建筑設(shè)計研究院有限公司， 北京 100045）
［摘要］國家速滑館是2022年北京冬奧會的標(biāo)志性場館，為北京市唯一新建的奧運(yùn)場館。介紹了國家速滑館地上鋼結(jié)構(gòu)設(shè)計中的關(guān)鍵問題。國家速滑館地上鋼結(jié)構(gòu)體系由馬鞍形索網(wǎng)、巨型環(huán)桁架、斜拉索、幕墻網(wǎng)殼等體系組成。工程設(shè)計影響因素多，各部分體系關(guān)系復(fù)雜，設(shè)計時需考慮多因素的耦合效應(yīng)，設(shè)計難度大。還介紹了國家速滑館鋼結(jié)構(gòu)體系及支承條件，介紹了鋼結(jié)構(gòu)設(shè)計中的難點及解決方案，研究了施工各階段鋼結(jié)構(gòu)體系的穩(wěn)定性，研究了環(huán)桁架及其支承體系的防連續(xù)倒塌性能及預(yù)防措施，介紹了關(guān)鍵節(jié)點的設(shè)計方法。
［關(guān)鍵詞］國家速滑館； 馬鞍形索網(wǎng)； 預(yù)應(yīng)力結(jié)構(gòu)； 非線性分析； 防連續(xù)倒塌分析
中圖分類號：TU394文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)20-0005-07
Steel structural design of National Speed Skating Oval
Wang Zhe, Bai Guangbo, Chen Binlei, Zhu Zhongyi, Shen Li, Wang Yi, Xing Juehui, Yang Yuchen
(Beijing Institute of Architectural Design, Beijing 100045, China)
Abstract:The National Speed Skating Oval(NSSO) will be an iconic building during the 2022 Beijing Winter Olympics, which will be the only new-built venue in Beijing. The key issues in the design of the above ground steel structure of the Nional Speed Skating Oval were introduced. The steel structural system of the NSSO consisted of several systems including saddle-shaped cable net, mega ring truss, stay cable and reticulated shell of the curtain wall. The design process took into account numerous factors. The relationship between each part of the system was complex. The coupling effect of multi-factors needed to be considered during design, and the design was difficult. The steel structural system and supporting conditions of the NSSO were introduced as well as the difficulties and solutions in the design of steel structure. The stability of the steel structural system at various stages of construction was studied, and performance and preventive measures for progressive collapse was studied on the ring truss and its supporting system. The design method of key nodes was introduced.
Keywords:National Speed Skating Oval; saddle-shaped cable network; prestressed structure; nonlinear analysis; progressive collapse analysis
作者簡介：王哲，碩士，高級工程師，Email:wangzhe3@biad.com.cn。
