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吳 兵，孟美莉，傅學(xué)怡，張 劍，孫 璨，馮葉文，林建剛
(深圳大學(xué)建筑設(shè)計研究院，深圳518060)[摘要] 深圳市坪山體育館為2011年第26屆夏季世界大學(xué)生運動會籃球賽場，該工程為一復(fù)雜體育建筑，上部圓形鋼結(jié)構(gòu)，直徑72m，采用新穎的弦支穹頂結(jié)構(gòu)體系，下部為鋼筋混凝土框架結(jié)構(gòu)，獨立柱基。本文介紹了結(jié)構(gòu)選型，受力特點及結(jié)構(gòu)設(shè)計，以及針對上述問題的計算分析，包括：弦支穹頂體系整體受力性能和屈曲穩(wěn)定性影響分析；荷載取值分析；施工全過程模擬計算分析；單體上部鋼結(jié)構(gòu)、單體下部混凝土結(jié)構(gòu)初步分析的基礎(chǔ)上的整體結(jié)構(gòu)總裝分析；根據(jù)深圳本地氣溫統(tǒng)計資料，合理選取計算溫差，分析溫差效應(yīng)對結(jié)構(gòu)安全的影響；關(guān)鍵復(fù)雜節(jié)點實體有限元計算分析，確保其可靠安全。計算分析表明：1）弦支體系不僅有效的提高了屋蓋結(jié)構(gòu)剛度，還大大提高了單層網(wǎng)殼結(jié)構(gòu)穩(wěn)定性；2）大跨空間結(jié)構(gòu)設(shè)計進(jìn)行總裝分析至為重要；3）大跨結(jié)構(gòu)溫差收縮效應(yīng)影響存在，溫差效應(yīng)施工模擬計算十分必要；4）復(fù)雜空間結(jié)構(gòu)的節(jié)點十分關(guān)鍵，應(yīng)通過有限元分析，精心設(shè)計。
[關(guān)鍵詞] 弦支穹頂；屈曲分析；施工模擬；總裝分析；溫差效應(yīng)分析；焊接圓鋼管相貫節(jié)點；鑄鋼節(jié)點Structure Design of Pingshan Basketball Gymnasium for Universidad 2011 Shenzhen
Wu Bing, Meng Meili, Fu Xueyi, Zhang Jian, Sun Can, Feng Yewen, Lin Jiangang
( The Institute of Architecture Design&Research Shenzhen University, Shenzhen 518060, China)Abstract: The suspend - dome structure is designed for the roof of Shenzhen Pingshan Basketball Gymnasium for Universidad 2011, the overlapping diameter of which is 72m, along with the RC frame - shear wall system as base structure. The introduction of the structure features, behaviors & design optimization is presented in this paper, which includes: the whole suspend - dome behavior & overall stability (buckling) analysis, the construction simulation analysis, the isolated & assembled modeling analysis for the base RC structure & the roof steel structure, the temperature effects analysis, the finite element analysis of key joints. The following summaries are indicated:1) the suspend - dome system could effectively stiffen the roof structure, & also benefit the overall stability of a singe - layer reticulated dome greatly; 2) the assembled modeling analysis would be essential for long - span space structure, 3) the temperature variation & shrinkage effects on ultra - long RC structure should be noticed, the related construction simulated calculation should be necessary; 4) the key joint of space structure should be designed precisely.
Keywords: suspend-dome structure, buckling; construction simulation, assembled modeling analysis; temperature variation effect; welded node of circular pipe; casting steel joint
