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孟美莉1，孫 璨2，吳 兵1，傅學(xué)怡1，張 劍1，馮葉文1，林建剛1
(1 深圳大學(xué)建筑設(shè)計研究院，深圳518060; 2 哈爾濱工業(yè)大學(xué)深圳研究生院，深圳518055)[摘要] 弦支穹頂結(jié)構(gòu)是一種新型的空間張拉結(jié)構(gòu)體系，兼具了索穹頂結(jié)構(gòu)的柔性和單層網(wǎng)殼結(jié)構(gòu)的剛性，既經(jīng)濟(jì)美觀，又具有良好的整體剛度和承載能力。然而，空間結(jié)構(gòu)的穩(wěn)定性一直是研究設(shè)計該類型結(jié)構(gòu)的關(guān)鍵問題，以至在結(jié)構(gòu)及桿件設(shè)計中常起到主要控制作用。本文基于基本的穩(wěn)定理論，對于弦支穹頂結(jié)構(gòu)體系的線性及非線性穩(wěn)定性進(jìn)行了深入研究，建立了一套系統(tǒng)的穩(wěn)定計算方法，及桿件計算長度系數(shù)的合理取值方法，并指導(dǎo)應(yīng)用于華南地區(qū)首例采用弦支穹頂結(jié)構(gòu)體系的2011年世界大學(xué)生運動會（深圳）籃球館屋蓋結(jié)構(gòu)的研究設(shè)計中，保證了結(jié)構(gòu)的安全穩(wěn)定性，取得了良好的經(jīng)濟(jì)效果，受到各方好評。
[關(guān)鍵詞] 弦支穹頂；穩(wěn)定性；非線性；初始缺陷；大學(xué)生運動會；籃球館；計算長度系數(shù)Stability Analysis of Prestressing Suspend Dome of Basketball Center for Universiade Shenzhen 2011
Meng Meili1, Sun Can2, Wu Bing1, Fu Xueyi1, Zhang Jian1, Feng Yewen1, Lin Jiangang1
(1 The Institute of Architecture Design & Research, Shenzhen University,Shenzhen 518060, China; 2 Shenzhen Graduate SchooI, Harbin Institute of Technology, Shenzhen 518055, China)Abstract: The Prestressing Suspend Dome is a kind of novel tension space roof structure. This structure type has both the flexibility of Prestressing Cable Dome and stiffness of single - layer latticed shell, with economical and beautiful characteristic, and better structural stiffness and loading capacity. While, the stability of space structures is always the key point in the research and design of this kind of structure, even being the primary design control case. Based on the basic stability analysis theories, the linear and nonlinear stability of Prestressing Suspend Dome are deeply researched, and a set of stability analysis methods and calculation method for member effective length coefficient is founded completely in this paper. All these theories and methods are applied into the Basketball Center roof structural research and design, which is the first Prestressing Suspend Dome in South China area, ensuring the structural stability and safety, and achieving great economical effects and owners' admiration.
Keywords: prestressing suspend dome; stability; nonlinear, initial defect; Universiade; basketball; effective length coefficient
