- 摘 要
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（1 上海建筑設(shè)計研究院有限公司上海建筑空間結(jié)構(gòu)工程技術(shù)研究中心， 上海 200041;2 上海市建筑科學(xué)研究院上海市工程結(jié)構(gòu)安全重點實驗室， 上海 200032）
［摘要］棗莊體育場屋蓋體系通過徑向索連接承受拉力的內(nèi)環(huán)索和受壓的外環(huán)梁，從而形成整體自平衡體系。首先利用ABAQUS軟件的幾何非線性算法對屋蓋結(jié)構(gòu)進行找形分析，通過增加內(nèi)環(huán)斜拉索的辦法實現(xiàn)內(nèi)環(huán)較大馬鞍形高差。設(shè)計了自鎖式索夾節(jié)點以抵抗節(jié)點不平衡力，利用風(fēng)荷載組合工況對屋蓋索進行優(yōu)化，編制優(yōu)化程序，對內(nèi)環(huán)索夾節(jié)點進行有限元優(yōu)化分析，對屋蓋結(jié)構(gòu)進行雙非線性極限承載力分析。結(jié)果表明，結(jié)構(gòu)穩(wěn)定性滿足要求。研究成果對全張拉場館結(jié)構(gòu)設(shè)計具有重要參考價值。
［關(guān)鍵詞］全張拉結(jié)構(gòu)； 大跨結(jié)構(gòu)； 找形分析； 索夾； 自平衡體系
中圖分類號：TU393-3文獻標識碼：A文章編號：1002-848X(2018)17-0022-06
Research on key structural design technologies of the cable-truss roof system in Zaozhuang Stadium
Li Ruixiong1, Li Yaming1, Jiang Qi2
(1 Shanghai Engineering Research Center of Spatial Structures, Shanghai Institute of Architectural Design and Research, Shanghai 200041, China; 2 Shanghai Key Laboratory of Engineering Structure Safety， SRIBS， Shanghai 200032, China)
Abstract:The roof system of Zaozhuang Stadium is a cable-truss roof system. The cables in the radial direction connect the inner ring cables with outer ring beams to build a self-balanced system. Firstly, the geometric nonlinear algorithm was employed to find the shape of the roof using the software ABAQUS. The saddle with larger height difference was achieved in the inner ring cables by increasing the inner stayed cables. The self-locked clamp was designed to resist the unbalanced force in the joint, and the joint was analyzed by finite element method. Moreover, a program was developed to optimize the inner ring cable clamp and the design of the cable considering the wind load condition. Ultimate bearing capacity of the roof system was analyzed considering double non-linearity. The results indicate that the structure satisfies the requirement of stability. Conclusively, the research provides good reference for the structural design of cabled stadium.
Keywords:full tension structure; large-span structure; form-finding analysis; cable clamp; self-balance system
作者簡介：李瑞雄，博士，高級工程師，Email: ruixiong_li@126.com。
