管板連接軸心受壓構(gòu)件極限承載力試驗研究
舒興平1，翁蘭溪1，袁智深1，鄭伯興1，丁蕓孫2
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（1 湖南大學土木工程學院鋼結(jié)構(gòu)研究所，長沙 410082；2 中國航空工業(yè)規(guī)劃設(shè)計研究院，北京 100088）［摘要］對5個管板連接構(gòu)件進行了受壓極限承載力試驗研究和非線性有限元分析。試驗表明，未補強的試件GPC-1，GPC-3和用鋼板補強的試件GPC-4，GPC-5的破壞模式均為試件的整體失穩(wěn)，用焊接空心球補強的試件GPC-2的破壞模式為鋼管的局部屈曲。試驗結(jié)果與有限元計算結(jié)果基本吻合。實際工程中應(yīng)用管板連接構(gòu)件作為受壓構(gòu)件時，必須加強構(gòu)件弱軸的剛度，以避免整體失穩(wěn)破壞，而采用焊接空心球補強是一種有效的方法。［關(guān)鍵詞］管板連接；受壓極限承載力；試驗研究；非線性有限元分析Experimental research on ultimate compressive bearing capacity of gusset plate connections to slotted tubes memberShu Xingping1，Weng Lanxi1，Yuan Zhishen1，Zheng Boxing1，Ding Yunsun2（1 Steel Structural Institute of Civil Engineering College of Hunan University, Changsha 410082, China；2 China Aeronautical Project and Design Institute, Beijing 100088, China)Abstract:Experimental research and nonlinear finite-element analysis of ultimate compressive bearing capacity on five gusset plate connections to slotted tubes members were carried out. The failure mode of models GPC-1 and GPC-3 which were not strengthened was the whole buckling failure, and so was the models GPC-4 and GPC-5 strengthened by steel plate. However, the failure mode of model GPC-2 strengthened by welded hollow spherical joints was the local buckling failure of the tube. The experimental results are close to the finite-element analysis results. The research indicates that when the gusset plate connections to slotted tubes member is used in practice, the rigidity of the member must be strengthened to avoid the happening of the whole buckling failure, and the combination of welded hollow spherical joints and gusset plate connection to slotted tubes member proves to be effective.Keywords:gusset plate connections to slotted tubes; ultimate compressive bearing capacity; test nonlinear FEA作者簡介：舒興平，博士，教授，一級注冊結(jié)構(gòu)工程師，Email:shuxingping@sina.com。參考文獻［1］丁蕓孫. 圓管結(jié)構(gòu)相貫節(jié)點幾個設(shè)計問題的討論［J］. 空間結(jié)構(gòu)，2002，8(2)：56-64.［2］CHENG JJR, KULAK GL, KHOO H-Strength of slotted tubular tension members［J］. Canadian Journal of Civil Engineering, 1998, 25：982-991.［3］ANSI/AISC 360-05. Specification for Structural Steel Buildings［S］.［4］CAN/CSA-S16-01.Limit States Design of Steel Structures［S］.［5］舒興平，朱邵寧，夏心紅，等. 長沙賀龍體育場鋼屋蓋圓管相貫節(jié)點足尺試驗研究［J］. 建筑結(jié)構(gòu)學報，2004，25(3)：8-13.［6］舒興平，朱正榮，王元清. N型方圓鋼管相貫節(jié)點足尺試驗研究［J］. 建筑結(jié)構(gòu)學報, 2006，27(1)：66-70.［7］董石麟，邢麗，趙陽，等.方鋼管焊接空心球節(jié)點的承載力與實用計算方法研究［J］.建筑結(jié)構(gòu)學報，2005，26(6)：27-37.［8］舒興平. 高等鋼結(jié)構(gòu)分析與設(shè)計［M］. 北京：科學出版社，2006.
