相貫節(jié)點剛度對某單層網(wǎng)殼結(jié)構(gòu)整體穩(wěn)定性的影響
邱國志，趙金城
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(上海交通大學土木工程系，上海 200030)［摘要］將回歸得到的X形相貫節(jié)點軸向剛度、平面外彎曲剛度及平面內(nèi)彎曲剛度的計算公式引入管結(jié)構(gòu)分析設計軟件STCAD，對某體育館單層網(wǎng)殼屋蓋結(jié)構(gòu)進行了靜力和整體穩(wěn)定性分析。結(jié)果表明，X形相貫節(jié)點的剛度隨著結(jié)構(gòu)內(nèi)力的增加而降低，節(jié)點的非剛性性能對單層網(wǎng)殼的變形及整體穩(wěn)定性有顯著影響。［關鍵詞］相貫節(jié)點；節(jié)點剛度；單層網(wǎng)殼；整體穩(wěn)定性Influence of joint stiffness on stability behavior of a single-layer reticulated shellQiu Guozhi, Zhao Jincheng(Department of Civil Engineering, Shanghai Jiaotong University，Shanghai 200030，China)Abstract:Importing the computational formulas of tubular X-joint stiffness,including axial stiffness,out-of-plane bending stiffness and in-plane bending stiffness,into the design software STCAD for tubular structures,the static analysis and global stability analysis were carried out aiming at a single-layer reticulated shell of a gymnasium with tubular X-joints. The analysis results show that the stiffness of tubular X-joints decreases with the increasing structural loads. The non-rigidity characteristics of tubular X-joints have great effects on deformation and global stability behavior of tubular structures,and should be taken into account in design.Keywords:tubular joint; joint stiffness; single-layer reticulated shell; global stability作者簡介：邱國志，博士，一級注冊結(jié)構(gòu)工程師，Email:qiugz@sjtu.edu.cn。參考文獻［1］邱國志.圓鋼管相貫節(jié)點剛度及其對結(jié)構(gòu)整體性能的影響［D］.上海：上海交通大學，2008.［2］上海交通大學土木工程系. 上海交通大學體育館屋蓋鋼結(jié)構(gòu)整體性能分析報告［R］. 2006.［3］美國ANSYS公司. ANSYS 用戶使用手冊［M］.北京:美國ANSYS公司北京辦事處,1998.［4］QIU GUOZHI，ZHAO JINCHENG. Parameter analysis and axial stiffness formulae of tubular X-joints when braces are pressed［J］. Journal of Shanghai Jiaotong University (Science), 2009，14(4)：410-417.［5］QIU GUOZHI，ZHAO JINCHENG. Experimental research and parameter analysis on rigidity of unstiffened tubular X-joints［C］//Shanghai：Proceedings of the 12th International Symposium on Tubular Structures (ISTS12)，2008:589-596.［6］邱國志，趙金城. X型圓鋼管相貫節(jié)點剛度試驗研究［J］.上海交通大學學報，2008，42(6)：966-970.［7］JGJ61—2003網(wǎng)殼結(jié)構(gòu)技術(shù)規(guī)程［S］. 北京：中國建筑工業(yè)出版社，2003.
