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(1 中冶建筑研究總院有限公司，北京 100088； 2 中建鋼構(gòu)有限公司北京分公司，北京 100089)

［摘要］天津梅江會(huì)展中心鋼屋蓋由32榀張弦桁架組成，最大跨度為89m，柱距為15m。主要介紹了張弦桁架拉索張拉施工步驟和采用裝置，針對(duì)整個(gè)施工過(guò)程進(jìn)行了計(jì)算分析，通過(guò)計(jì)算確定了張拉力大小、跨中反拱位移等參數(shù)，并以此作為指導(dǎo)張拉施工的依據(jù)。桁架張拉和吊裝過(guò)程中，對(duì)部分桁架的桿件應(yīng)力、跨中反拱位移、支座滑動(dòng)位移進(jìn)行了監(jiān)測(cè)，得到的測(cè)量值與計(jì)算值相吻合，從而證明了施工模擬驗(yàn)算的正確性。

［關(guān)鍵詞］張弦桁架；鋼拉索；施工模擬；張拉；監(jiān)測(cè)

Tension, lifting and monitoring of string truss in Conference Exhibition Center of Tianjin Meijiang

Zhang Lijun¹, Chen Huazhou², Zhao Yicheng¹, Zhu Yifeng¹, Qian Huan²(1 Central Research Institute of Building & Construction Co., Ltd., MCC Group, Beijing 100088, China;2 China Construction Steel Structure Co., Ltd., Beijing Branch, Beijing 100089, China)

Abstract:The steel proof in Conference Exhibition Center of Tianjin Meijiang composed with 32-Pin string trusses, which column spacing is 15 meters.The maximum span of the string truss is 89 meters. Construction procedure and stretching equipment of pulling cable in string truss were described. Construction periods simulation were carried out. The value of tensioning force, the inverted arch displacement of truss at midspan and other parameters were calculated to guide the tension construction. During the process of tension and lifting of truss, the rods stress，the inverted arch displacement at midspan and bearing slide displacement of part of the truss were monitored.The measured value obtained is consistent with the calculated values,which prove the correctness of construction simulation.

Keywords:truss string structure; steel pulling cable; construction simulation; tension; monitoring

作者簡(jiǎn)介：張利軍，碩士，高級(jí)工程師，國(guó)家一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：zhlj72@263.net。

參考文獻(xiàn)

［1］黃明鑫.大型張弦梁結(jié)構(gòu)的設(shè)計(jì)與施工［M］.濟(jì)南：山東科學(xué)技術(shù)出版社，2005.

［2］衛(wèi)東，王志剛，劉季康，等. 全國(guó)農(nóng)業(yè)展覽館中西廣場(chǎng)展廳張弦桁架屋蓋設(shè)計(jì)［J］. 建筑結(jié)構(gòu)，2006,36(6):76-79.

［3］中冶集團(tuán)建筑研究總院建筑工程檢測(cè)中心. 天津梅江會(huì)展中心張弦桁架施工監(jiān)測(cè)檢測(cè)報(bào)告［R］.北京：2009.