- 摘 要
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（1 中建國際(深圳)設(shè)計顧問有限公司，深圳 518033； 2 哈爾濱工業(yè)大學(xué)深圳研究生院，深圳 518055）
［摘要］國外某工程，外部網(wǎng)筒由圓柱斜向交叉與環(huán)梁編織而成,外網(wǎng)筒柱節(jié)點核心面積相比柱截面面積大幅減小,承載力不足,經(jīng)有限元分析,匯交節(jié)點應(yīng)力狀態(tài)復(fù)雜,陰角區(qū)存在明顯的應(yīng)力集中,通過彈性、彈塑性有限元分析,找出了應(yīng)力集中的原因,進(jìn)而有針對性地提出了采用鋼板凳進(jìn)行加強(qiáng)的措施，取得了較好的效果。
［關(guān)鍵詞］外網(wǎng)筒；斜柱交叉節(jié)點；應(yīng)力集中；有限元；鋼板凳
Design and research on the diagrid columns cross node of a high-rise office building
Fu Xueyi1, Jiang Huabing1, Sun Can2(1 China Construction Design International，Shenzhen 518033,China; 2 Harbin Institute of Technology, Shenzhen 518055,China)
Abstract:In a high-rise office building structural system, the exterior tube, composed by reinforced concrete diagrid columns and ring beams, is the most important main structure. In the core area of the node crossed by two diagrid columns, the node section area is far smaller than the sum of two columns’ section areas. Therefore, the carrying capacity of the original reinforced concrete cross node is not sufficient. The elastic and plastic FEM analysis result shows that the stress in the cross node section is very complicated, and there is distinct stress concentration. By researches, the cause of stress concentration is found, and one effective measure—strengthening the cross node by steel bench is presented. The novel node design method has been proved well by the experiment and actual project application.
Keywords:exterior tube; diagrid columns cross node; stress concentration; FEM; steel bench
作者簡介：傅學(xué)怡，研究員，Email：fu-xue-yi@yahoo.com.cn。
參考文獻(xiàn)
［1］BS8110-1：1997,BS8110-2：1985英國鋼筋混凝土規(guī)范［S］.
［2］江見鯨，陸新征，葉列平.混凝土結(jié)構(gòu)有限元分析［M］.北京：清華大學(xué)出版社，2005.
［3］龔曙光，謝桂蘭.ANSYS操作命令與參數(shù)化編程［M］.北京：機(jī)械工業(yè)出版社，2004.
