索穹頂結(jié)構(gòu)整體提升張拉逆向模擬分析施工全過程研究
張麗梅1，梁小勇1，陳務(wù)軍2，杜守軍1
- 摘 要
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(1 河北科技大學(xué)建筑工程學(xué)院,石家莊 050018； 2 上海交通大學(xué)空間結(jié)構(gòu)研究中心, 上海 200030)［摘要］采用非線性有限元法建立了索穹頂逆向施工全過程分析方法，通過改變主動索和輔助索的索長來實(shí)現(xiàn)索穹頂?shù)恼w逆向提升。采用索桿梁模型模擬索穹頂，主動索和輔助索為2節(jié)點(diǎn)索單元，被動索為5節(jié)點(diǎn)索單元，桅桿為桿單元，中央環(huán)梁為梁單元。索長改變通過施加溫度荷載實(shí)現(xiàn)，整個(gè)分析模擬了結(jié)構(gòu)從理想平衡狀態(tài)到中央環(huán)梁放至地面的施工全過程。采用該方法可使所有構(gòu)件在地面組裝完成后整體逆向提升，避免了邊張拉、邊安裝，節(jié)省時(shí)間，同時(shí)避免了模擬分析過程拓?fù)涞牟粩嘧兓?/div>［關(guān)鍵詞］索穹頂; 逆向模擬分析; 整體提升Simulation analysis of whole inverse lifting and stretching process for integral cable dome structuresZhang Limei1, Liang Xiaoyong1, Chen Wujun2, Du Shoujun1(1 Architecture and Civil Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;2 Space Structures Research Center, Shanghai Jiaotong University, Shanghai 200030, China)Abstract:A simulation method of integral inverse lifting and stretching process for the cable dome was established based on nonlinear finite element method. The integral inverse lifting process of the cable dome was realized through changing the length of the positive constant force cables and the subsidiary cables. The cable-strut-beam model was used to simulate the cable dome, and the positive constant force cables and the subsidiary cables, the passive cables, the mast, the hub were respectively simulated with the two-node curved element, the five-node isoparametric element, the strut element and the beam element. In the integral inverse lifting process, the integral cable dome moved from the final equilibrium state to the hub reaching ground, and the temperature action can simulate the variations of the cable length. All the structural members of the cable dome were assembled on the floor, and this can prevent structural assemblage in the air and spare construction time. At the same time, the changes of the structural topological relation can be avoided.Keywords:cable dome; inverse simulation analysis; integral lifting國家自然科學(xué)基金資助項(xiàng)目(50878128)，河北省科技支撐計(jì)劃項(xiàng)目(092151291)，河北科技大學(xué)博士基金(QD200940)。作者簡介：張麗梅，博士，副教授，Email:zhanglimei@hebust.edu.cn。參考文獻(xiàn)［1］ 陳務(wù)軍, 關(guān)富玲. 索桿可展開結(jié)構(gòu)體系分析［J］. 空間結(jié)構(gòu), 1997, 3(4): 43-48.［2］ 羅堯治, 董石麟. 索桿張力結(jié)構(gòu)初始預(yù)應(yīng)力分布計(jì)算［J］. 建筑結(jié)構(gòu)學(xué)報(bào), 2000, 21(5): 59-64.［3］ 袁行飛, 董石麟. 索穹頂體系施工控制反分析［J］. 建筑結(jié)構(gòu)學(xué)報(bào), 2001, 22(2): 75-79.［4］ 沈祖炎, 張立新. 基于非線性有限元的索穹頂施工模擬分析［J］. 計(jì)算力學(xué)學(xué)報(bào), 2002, 19(4): 466-471.［5］ 張志宏, 董石麟, 王文杰. 索桿張拉結(jié)構(gòu)的設(shè)計(jì)和施工全過程分析［J］. 空間結(jié)構(gòu), 2003, 9(2): 20-24.［6］ DENG H, JIANG Q F, KWAN A S K. Shaping finding of incomplete cable-strut assemblies containing slack and prestressed elements［J］. Computers & Structures, 2005(83): 1769-1779.［7］ 伍曉順. 索桿張力結(jié)構(gòu)的施工成型和平面連桿機(jī)構(gòu)的運(yùn)動形態(tài)分析［D］. 杭州: 浙江大學(xué), 2006.［8］ ESTRADA G G, BUNGARTZ H J, MOHRDIECK C. Numerical form-finding of tensegrity structures［J］. International Journal of Solids and Structures, 2006,43: 6855-6866.［9］ 張麗梅. 非完全對稱Geiger索穹頂結(jié)構(gòu)特征與分析理論研究［D］. 上海: 上海交通大學(xué), 2008.［10］ 唐建民, 卓家壽. 張拉結(jié)構(gòu)非線性分析兩節(jié)點(diǎn)曲線單元有限元［J］. 力學(xué)學(xué)報(bào), 1999, 31(5): 633-640.［11］ 唐建民, 董明, 錢若軍. 張拉結(jié)構(gòu)非線性分析的五節(jié)點(diǎn)等參單元［J］. 計(jì)算力學(xué)學(xué)報(bào), 1997, 14(1): 109-113.［12］ 張立新. 索穹頂體系成形關(guān)鍵問題和風(fēng)致振動［D］. 上海: 同濟(jì)大學(xué), 2001.
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