沁陽市體育館橢圓拋物面弦支穹頂穩(wěn)定性研究*
杜文風(fēng)1，喻福東2
- 摘 要
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（1 河南大學(xué)土木建筑學(xué)院， 開封 475004; 2 黃岡職業(yè)技術(shù)學(xué)院建筑學(xué)院， 黃岡 438002）［摘要］ 沁陽市體育館鋼屋蓋采用由Levy索桿體系和單層網(wǎng)殼組合成的弦支穹頂結(jié)構(gòu)體系，具有跨度大、外形為橢圓拋物面的特點(diǎn)。對(duì)弦支穹頂結(jié)構(gòu)進(jìn)行了桿件內(nèi)力、支座反力、節(jié)點(diǎn)位移、自振特性、線性屈曲和非線性屈曲分析，考慮了初始幾何缺陷的影響，并與單層網(wǎng)殼結(jié)構(gòu)進(jìn)行了對(duì)比。研究結(jié)果表明，弦支穹頂結(jié)構(gòu)引入高強(qiáng)度預(yù)應(yīng)力拉索后，可以減小對(duì)邊緣支承結(jié)構(gòu)的作用、減小結(jié)構(gòu)位移、降低對(duì)初始幾何缺陷的敏感性和提高結(jié)構(gòu)整體穩(wěn)定性。在所考慮的活荷載全跨布置、長軸半跨布置和短軸半跨布置3種形式中，以活荷載短軸半跨布置最為不利。［關(guān)鍵詞］弦支穹頂; 單層網(wǎng)殼; 整體穩(wěn)定性; 初始幾何缺陷中圖分類號(hào)：TU393.3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2013)22-0039-04Stability research on elliptic paraboloid shaped suspend-dome structural system of Qinyang Municipal GymnasiumDu Wenfeng1, Yu Fudong2(1 College of Civil Engineering and Architecture, Henan University, Kaifeng 475004, China; 2 School of Architecture and Construction, Huanggang Polytechnic College, Huanggang 438002, China)Abstract: The steel roof of the Qinyang Municipal Gymnasium adopts suspend-dome structural system which consists of levy cable-strut system and single-layer reticulated shell with a large span and an elliptic paraboloid shape. Analyses were conducted of elements internal forces, reaction force, nodal displacement, natural vibration characteristics, linear buckling and nonlinear buckling properties, in which geometrical defect was considered and results were compared with that of single layer reticulated shell. The research results show that the load action on the supporting structure and the structural displacement decrease when high strength prestressed cable are applied in suspend-dome structure. And the sensitivity to initial geometrical defect decrease and the structure integral stability is enhanced when the prestressed cable are used. In three patterns of live load distributions(full span distribution, half span distribution along major axis and half span distribution along minor axis), the s half span distribution along minor axis is the most dangerous one.Keywords: suspend-dome; single-layer reticulated shell; integral stability; initial geometrical defect*國家自然科學(xué)基金項(xiàng)目（50478079）。作者簡介：杜文風(fēng)，博士，副教授，Email:dwf@henu.edu.cn。參考文獻(xiàn)［1］MAMORU KAWAGUCHI, MASARU ABE, JAMERU BER, et al. On a structural system “suspen-dome” system［C］// Proceedings of IASS Symposium. Istanbul, 1993: 523-530.［2］陳志華. 弦支穹頂結(jié)構(gòu)研究進(jìn)展與工程實(shí)踐［J］.建筑鋼結(jié)構(gòu)進(jìn)展,2011,13(5):10-19.［3］崔曉強(qiáng),郭彥林.Kiewitt型弦支穹頂結(jié)構(gòu)的彈性極限承載力研究［J］.建筑結(jié)構(gòu)學(xué)報(bào), 2003, 24(1): 74-79.［4］陳志華,竇開亮,左晨然.弦支穹頂結(jié)構(gòu)的穩(wěn)定性分析［J］.建筑結(jié)構(gòu), 2004, 34(5): 46-48.［5］張愛林,李學(xué)春, 張寶勤,等. 2008年奧運(yùn)會(huì)羽毛球館預(yù)應(yīng)力張弦穹頂結(jié)構(gòu)整體穩(wěn)定分析［J］.工業(yè)建筑,2007,37(1):8-11.［6］葛家琪,張國軍,王樹，等. 2008奧運(yùn)會(huì)羽毛球館弦支穹頂結(jié)構(gòu)整體穩(wěn)定性能分析研究［J］.建筑結(jié)構(gòu)學(xué)報(bào), 2007, 28(6): 22-30.［7］羅斌,郭正興,馮遠(yuǎn),等.常州市體育館橢圓拋物面弦支穹頂穩(wěn)定性研究［J］.建筑結(jié)構(gòu)學(xué)報(bào),2009,30(6):148-153.［8］GB 50009—2001 建筑結(jié)構(gòu)荷載規(guī)范［S］.2006年版. 北京：中國建筑工業(yè)出版社，2006.［9］JGJ 61—2003 網(wǎng)殼結(jié)構(gòu)技術(shù)規(guī)程［S］.2006年版. 北京：中國建筑工業(yè)出版社，2006.［10］郭佳民.弦支穹頂結(jié)構(gòu)的理論分析與試驗(yàn)研究［D］.杭州：浙江大學(xué), 2008.
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