- 摘 要
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（1 中國建筑西北設計研究院有限公司， 西安 710018； 2 浙江精工鋼結構集團有限公司， 紹興 312030）
［摘要］渭南市體育場鋼屋蓋是由主、副兩道拱形桁架支撐組成的空間管桁架結構體系。鋼結構屋蓋與下部鋼筋混凝土看臺部分完全脫開。東、西看臺屋蓋呈兩片單獨的梭形，計算跨度為290m，結構最高點距地面約63.5m。節(jié)點以相貫節(jié)點為主，拱腳采用鑄鋼節(jié)點。利用MIDAS軟件對結構進行各工況下的靜力分析，結果表明，結構應力、位移滿足設計要求；對結構進行整體穩(wěn)定性分析，結果表明，結構對初始缺陷不敏感，具有較好的整體穩(wěn)定性；此外，還對相貫節(jié)點、鑄鋼節(jié)點進行有限元分析，對鋼結構桿件應力、變形進行了卸載監(jiān)測。
［關鍵詞］空間管桁架; 相貫節(jié)點; 鑄鋼節(jié)點; 有限元分析; 整體穩(wěn)定分析
中圖分類號TU393.3 文獻標識碼：A 文章編號：1002-848X(2014)07-0060-05
Structural design on the large-span steel roof of Weinan stadium
Ma Yunmei1, Yang Qi1, Liu Wande1, Chen Jie2
（1 China Northwest Architecture Design and Research Institute Co., Ltd., Xi’an 710018, China; 2 Zhejiang Jinggong Steel Building Co., Ltd., Shaoxing 312030, China）
Abstract: The steel roof of Weinan stadium is spatial pipe truss structure consisting of two arch supports. The whole roof is completely separated from the lower reinforced concrete stand part. The shape of the roof structure of the west and east stand is a piece of single spindle with span of about 290m and the maximum height of about 63.5m.The steel structure adopts the welded nodes mostly and the arch foots adopt the cast-steel nodes. MIDAS software was used to carry out static stress analysis of the structure under each mechanical condition. Results show that the static stress and displacement satisfy the requirements of the related standards. The overall structural stability analysis was carried out to come to the conclusion that the structure is not sensitive to the initial defects and performs well in the overall structural stability. The typical welded nodes and the cast-steel nodes were analyzed by the finite element method. The stress and deformation of steel members were monitored in the unload process.
Keywords: spatial pipe truss; welded node; cast-steel node; finite element analysis; overall stability analysis
作者簡介：馬云美，碩士，高級工程師，一級注冊結構工程師，Email：maym0000@163.com。
參考文獻
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［2］謝忠良，周紅梅，葉甲淳.浙江工商大學下沙校區(qū)主體育場鋼罩棚結構設計［J］.建筑結構，2012,42(8):33-37.
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