- 摘 要
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(中國航空規(guī)劃建設發(fā)展有限公司，北京 100120)
［摘要］以三亞體育中心體育館屋蓋鋼結(jié)構(gòu)為研究對象，對預應力大跨度弦支穹頂鋼結(jié)構(gòu)進行設計研究。該屋蓋弦支穹頂結(jié)構(gòu)由上弦單層網(wǎng)殼、下弦環(huán)索與徑向拉桿、豎向撐桿組成。在設計中建立屋蓋鋼結(jié)構(gòu)有限元計算模型進行結(jié)構(gòu)分析。在綜合考慮結(jié)構(gòu)幾何力學特點、預應力損失、施工缺陷等多種因素的基礎上，對恒荷載、活荷載、風荷載、溫度作用、地震作用等工況進行組合，計算結(jié)構(gòu)極限狀態(tài)下的內(nèi)力和工作狀態(tài)下的變形，并且重點研究了影響結(jié)構(gòu)整體穩(wěn)定性能的因素。
［關鍵詞］弦支穹頂；屈曲模態(tài)；幾何非線性；結(jié)構(gòu)整體穩(wěn)定
Structure design and research of steel large span suspended dome of the gymnasium in Sanya Sports Centre
Wang Bin, Zhang Guojun, Wang Shu, Ge Jiaqi(China Aviation Planning and Construction Development Co., Ltd., Beijing 100120, China)
Abstract:The steel structure roof of gymnasium in Sanya Sports Centre is employed for the design and research of the large span prestressed suspended dome structural system. The roof structure is comprised of the single-layer latticed shell on the top, the bottom hoop cable and radial tension bar, and the vertical stay-strut. For the design, the finite element model is established for the structural steel roof. On the basis of the consideration of structural feature of geometric mechanics, prestressing loss, and construction imperfection, the internal force and the deformation are calculated on the ultimate state and the working state respectively subject to the combination load cases from dead load, live load, wind load, temperature and earthquake load, as well as the impact on the structural overall stability is mainly analyzed.
Keywords:suspended dome; buckling mode; geometric nonlinearity; structural overall stability
作者簡介：王彬(1979-)，男，工程師，Email:capdi.gssd@vip.163.com。
參考文獻
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