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(1 湖南大學(xué)土木工程學(xué)院鋼結(jié)構(gòu)研究所，長(zhǎng)沙 410082； 2 浙江義烏工商職業(yè)技術(shù)學(xué)院土木工程系，義烏 322000)
［摘要］對(duì)支管受軸向壓力作用的墊板加強(qiáng)Y型圓鋼管節(jié)點(diǎn)進(jìn)行了非線性有限元分析，研究了幾何參數(shù)對(duì)加強(qiáng)型節(jié)點(diǎn)受壓極限承載力的影響。分析表明，設(shè)置適當(dāng)尺寸的墊板能夠增強(qiáng)Y型圓鋼管相貫節(jié)點(diǎn)承受荷載和抵抗變形的能力。用多元線性回歸法求出墊板加強(qiáng)Y型圓鋼管節(jié)點(diǎn)受壓極限承載力提高系數(shù)φp的回歸方程，從而提出了墊板加強(qiáng)Y型圓鋼管節(jié)點(diǎn)受壓極限承載力的建議公式。
［關(guān)鍵詞］墊板；加強(qiáng)型節(jié)點(diǎn)；Y型管節(jié)點(diǎn)；受壓極限承載力；有限元分析
Research on ultimate compressive bearing capacity of circular tubular Y-joints reinforced with doubler plate
Shu Xingping1, Zhang Xu1，2, Yuan Zhishen1(1 Steel Structural Institute of Civil Engineering College, Hunan University, Changsha 410082, China；2 Department of Civil Engineering,Yiwu Industrial and Commercial College,Yiwu 322000,China)
Abstract:Nonlinear finite element analysis is used for the numerical computation of circular tubular Y-joints reinforced with doubler plate under axial compression of the brace. The research on the effects of geometric parameters on the ultimate compressive bearing capacity of reinforced joints shows that with a proper reinforced plate size, the load-carrying capacity and the deformation-resistance capacity of circular hollow section Y-joints will be improved. By multiple linear regression, a regressive equation is deduced withφp coefficient for the improvement of the ultimate compressive bearing capacity of the joints. Then the design formula to calculate the ultimate compressive bearing capacity of circular tubular Y-joints reinforced with doubler plate is offered.
Keywords:doubler plate; reinforced joint; Y-joints; ultimate compressive bearing capacity; finite element analysis
作者簡(jiǎn)介：舒興平，教授，博導(dǎo)，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：hnlget@163.com。
參考文獻(xiàn)
［1］丁蕓孫.圓管結(jié)構(gòu)相貫節(jié)點(diǎn)幾個(gè)設(shè)計(jì)問題的討論［J］.空間結(jié)構(gòu)，2002，8(2).
［2］PACKER J A, HENDERSON J E.空心管結(jié)構(gòu)連接設(shè)計(jì)指南［M］. 北京：科學(xué)出版社，2001.
［3］舒興平.高等鋼結(jié)構(gòu)分析與設(shè)計(jì)［M］.北京：科學(xué)出版社，2006.
［4］舒興平，朱邵寧，夏心紅，等.長(zhǎng)沙賀龍?bào)w育館鋼屋蓋圓管相貫節(jié)點(diǎn)足尺試驗(yàn)研究［J］.建筑結(jié)構(gòu)學(xué)報(bào)，2004，25(3).
［5］FUNG T C, SOH C K, CHAN T K, et al. Stress concentration factors of doubler plate reinforced tubular T joints［J］. Journal of Structural Engineering, 2002, 128(12).
［6］FENG QI, TAN JIAHUA. The ultimate strength of doubler plate reinforced Y-joints under compression loading［J］. Journal of Marine Science and Application, 2005, 4(2).
［7］CHOO Y S, et al. Static strength of T-joints reinforced with doubler or collar plates. I: experimental investigations［J］. Journal of Structural Engineering, 2005, 131(1).
［8］GB50017—2003鋼結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］. 北京：中國(guó)計(jì)劃出版社，2003.