西安東航維修基地新機(jī)庫(kù)鋼屋蓋結(jié)構(gòu)整體提升若干關(guān)鍵技術(shù)研究*
田黎敏1，郝際平1，李存良2，王媛3，鄭江1
- 摘 要
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（1 西安建筑科技大學(xué)土木工程學(xué)院，西安 710055；2 陜西建工集團(tuán)機(jī)械施工有限公司， 西安 710043；3 中國(guó)建筑西北設(shè)計(jì)研究院，西安 710018）［摘要］西安東航維修基地新機(jī)庫(kù)鋼屋蓋采用正交斜放焊接球空間網(wǎng)架體系。通過(guò)有限元分析，對(duì)提升點(diǎn)的設(shè)置和提升過(guò)程進(jìn)行研究，確定了提升點(diǎn)位移差的限值，并對(duì)提升支架、網(wǎng)架輔助提升點(diǎn)、門頭單元提升點(diǎn)以及混凝土柱的穩(wěn)定性進(jìn)行分析，保證了提升過(guò)程的安全。此外，考慮了替換提升超限桿件對(duì)結(jié)構(gòu)的影響。研究表明：按照方案1的方法設(shè)置（在東西側(cè)奇數(shù)柱處設(shè)置）提升點(diǎn)是合理的；提升點(diǎn)水平彈性剛度的取值僅和屋蓋自重以及提升鋼絞線長(zhǎng)度有關(guān)；多質(zhì)點(diǎn)有限元計(jì)算模型更加合理，結(jié)構(gòu)在同步提升狀態(tài)下受力和變形均滿足規(guī)范要求，整個(gè)提升過(guò)程安全可靠；提升點(diǎn)位移差的警戒限值為15mm；提升支架、網(wǎng)架輔助提升點(diǎn)、門頭單元提升點(diǎn)在提升過(guò)程中安全可靠；混凝土立柱提升平面內(nèi)的穩(wěn)定性可以通過(guò)在柱外側(cè)施加預(yù)拉力來(lái)實(shí)現(xiàn)，增設(shè)柱間支撐則可以保證提升平面外的穩(wěn)定性；替換超限桿件對(duì)結(jié)構(gòu)安全提升效果明顯，而且對(duì)設(shè)計(jì)狀態(tài)下的整體結(jié)構(gòu)影響較小，是切實(shí)可行的。［關(guān)鍵詞］整體提升; 提升點(diǎn); 多質(zhì)點(diǎn); 位移差限值; 超限桿件中圖分類號(hào)：TU337 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2015)05-0054-05Research on several key technologies for integral lifting of new hangar steel roof for China Eastern Airline Repair Base in Xi’anTian Limin1, Hao Jiping1, Li Cunliang2, Wang Yuan3, Zheng Jiang1(1 School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China; 2 Shaanxi Construction Engineering Group Construction Machinery Company, Xi′an 710043, China; 3 Northwestern Architectural Design Institutes Company, Xi′an 710018, China)Abstract: The new hangar steel roof for China Eastern Airline Repair Base in Xi′an adopts the orthogonal diagonal welded spherical grid structure. The position of lifting points was analyzed as well as lifting process by finite element method, and the limited value of displacement difference was determined. The stabilities of lifting trestles, grid auxiliary lifting points, door head unit lifting points and concrete columns were researched to ensure the safety in lifting process. Moreover, the influence of substitute for out-of-code members was considered. The analytical results show that the first scheme is reasonable in set of positions (odd columns at east and west sides) of lifting points. The horizontal elastic stiffness of lifting points just relates to self-weight and length of steel stranded wire. The multi-particle finite element model is more reasonable and the structure in lifting process is safe. It is believed that the process of lifting is safe and the deformation and stress under the state of tentative lifting can meet the requirements. From the analysis, the limited value of displacement difference is 15mm and the lifting trestles, grid auxiliary lifting points, door head unit lifting points and concrete columns are reliable. To enhance the stability of concrete column in the plane, applying pre-stress on the lateral side of columns is suitable, and adding braces between columns can ensure the stability out of plane. Replacing out-of-code members, which can promote the structure safety obviously, has little effect on the overall structure under the design conditions and is feasible.Keywords: integral lifting; lifting point; multi-particle; limited value of displacement difference; out-of-code member*國(guó)家自然科學(xué)基金項(xiàng)目（51408623），建筑安全與環(huán)境國(guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放課題基金項(xiàng)目（BSBE2014-04），陜西省教育廳專項(xiàng)科研項(xiàng)目（14JK1400），西安建筑科技大學(xué)青年科技基金項(xiàng)目（QN1411），西安建筑科技大學(xué)鋼結(jié)構(gòu)創(chuàng)新團(tuán)隊(duì)資助計(jì)劃。作者簡(jiǎn)介：田黎敏，博士，講師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：tianlimin701@163.com。參考文獻(xiàn)［1］田黎敏，郝際平，李存良，等. 大跨度鋼屋蓋結(jié)構(gòu)整體提升施工過(guò)程力學(xué)模擬分析［J］. 建筑結(jié)構(gòu)學(xué)報(bào)，2013，34（11）：33-39.［2］郭彥林，繆友武，婁俊杰，等. 澳門綜合體育館主桁架整體提升及提升塔架分析［J］. 建筑結(jié)構(gòu)學(xué)報(bào)，2005，26（1）：17-24.［3］鄭七振，鮑永亮，彭斌，等. 上海港國(guó)客中心鋼桁架整體提升施工仿真分析［J］. 工程力學(xué), 2010，27（11）：82-87.［4］烏建中，卞永明，徐銘謙. 東方明珠廣播電視塔鋼天線桅桿同步整體提升［J］. 同濟(jì)大學(xué)學(xué)報(bào)：自然科學(xué)版，1996，24（1）：44-49.［5］劉樹(shù)屯，關(guān)憶盧. 首都機(jī)場(chǎng)306×90m飛機(jī)庫(kù)屋蓋設(shè)計(jì)和施工［J］. 建筑結(jié)構(gòu)學(xué)報(bào)，1997，18（3）：47-57.［6］羅堯治，胡寧，沈雁彬，等. 網(wǎng)殼結(jié)構(gòu)“折疊展開(kāi)式”計(jì)算機(jī)同步控制整體提升施工技術(shù)［J］. 建筑鋼結(jié)構(gòu)進(jìn)展，2005，7(4)：27-32.［7］張麗梅，梁小勇，陳務(wù)軍，等. 索穹頂結(jié)構(gòu)整體提升張拉逆向模擬分析施工全過(guò)程研究［J］. 建筑結(jié)構(gòu)，2010，40（10）：74-77.［8］鮑廣鑒，王宏，孫大軍，等. 大面積鋼屋蓋多吊點(diǎn)非對(duì)稱整體提升技術(shù)［J］. 施工技術(shù)，2004，33（5）：10-12.［9］鄭江，郝際平，王宏，等. 大跨屋蓋多點(diǎn)整體提升過(guò)程的力學(xué)形體研究［J］. 建筑結(jié)構(gòu)，2009，39（1）：83-87.［10］曾令權(quán)，郭正興，羅斌，等. 潮汕機(jī)場(chǎng)航站樓鋼屋蓋整體提升技術(shù)［J］. 施工技術(shù), 2011, 40(1): 70-72.
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