- 摘 要
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（1 北京市建筑工程研究院有限責(zé)任公司, 北京 100039； 2 中國建筑西南設(shè)計(jì)研究院有限公司, 成都 610042）
［摘要］徐州市奧體中心體育場工程屋蓋采用了新型雜交空間結(jié)構(gòu)——環(huán)向懸臂索承網(wǎng)格結(jié)構(gòu)，結(jié)構(gòu)構(gòu)造為開口形式，與弦支穹頂相似，徑向鋼梁變?yōu)閼冶蹣?gòu)件，與周圍結(jié)構(gòu)通過銷軸連接，這釋放了懸臂構(gòu)件端部彎矩，使鋼拉索構(gòu)件成為主要的受力構(gòu)件，減小了懸挑梁的截面從而大大地減少用鋼量。對本工程與預(yù)應(yīng)力優(yōu)化設(shè)計(jì)相關(guān)的關(guān)鍵技術(shù)進(jìn)行了研究，包括鋼拉索失效分析、預(yù)應(yīng)力索夾節(jié)點(diǎn)的深化設(shè)計(jì)和抗滑移試驗(yàn)，并采用正搭法和倒拆法對預(yù)應(yīng)力施工進(jìn)行仿真分析等。結(jié)果表明，環(huán)向懸臂索承網(wǎng)格結(jié)構(gòu)適用于超大型的體育場及其他公共建筑。
［關(guān)鍵詞］環(huán)向懸臂; 索承網(wǎng)格結(jié)構(gòu); 索夾節(jié)點(diǎn); 深化設(shè)計(jì); 抗滑移試驗(yàn); 預(yù)應(yīng)力施工; 仿真分析
中圖分類號：TU398+.9 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)15-0036-05
Research and application of critical technology for the prestressed design of ring cantilever cable supported latticed structures
Si Bo1, Wang Feng1, Xiang Xin’an2, Bao Min1, Wang Zeqiang1
(1 Beijing Building Construction Research Institute Co., Ltd., Beijing 100039, China; 2 China Southwest Architectural Design and Research Institute Corp., Ltd., Chengdu 610042, China)
Abstract: The new hybrid spatial structure of ring cantilever cable supported latticed structures is adopted in the roof of Xuzhou Olympic Sports Center Stadium project. The structural form is similar to suspendome and is constructed as a form of opening. The radial steel beams become cantilever members, which are connected with the surrounding structures by pin shafts to release out the moment produced at the end components of cantilever members. Steel cable components have become the main bearing members. The sections of cantilever beams can be reduced and the amount of steel is greatly reduced. The critical technologies of the project about prestressed optimization design were studied, including the failure analysis of steel cable, deep design and anti-slip test of cable clamp joints. Assembled method and the backward method were adopted to carry out simulation analysis of prestressed construction. Results show that the ring cantilever cable supported latticed structures is suitable for super large stadiums and other public buildings.
Keywords: ring cantilever; cable supported latticed structure; cable clamp joint; deep design; anti-slip test; prestressed construction; simulation analysis
作者簡介：司波，碩士，高級工程師，一級注冊建造師，Email:sibo_2003@163.com。
參考文獻(xiàn)
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［2］司波，秦杰，張然，等.正六邊形平面弦支穹頂結(jié)構(gòu)施工技術(shù)［J］.施工技術(shù)，2008，37(4):56-58.
［3］司波，高晉棟，王澤強(qiáng),等. 雙層輪輻式空間張弦鋼屋架預(yù)應(yīng)力施加仿真分析與監(jiān)測［J］.建筑結(jié)構(gòu),2010，40(10)：71-73,85.
［4］CECS 235∶2008鑄鋼節(jié)點(diǎn)應(yīng)用技術(shù)規(guī)程［S］.北京：中國計(jì)劃出版社，2008.
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