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(1 長安大學(xué)陜西省公路橋梁與隧道重點(diǎn)實(shí)驗(yàn)室， 西安 710064；2 蘭州大學(xué)土木工程與力學(xué)學(xué)院， 蘭州 730000)
［摘要］通過對混凝土組合板與冷彎薄壁型鋼構(gòu)件采用自攻螺釘連接抗剪模型進(jìn)行單調(diào)加載試驗(yàn)，分析了螺釘連接模型界面抗剪破壞模式、螺釘抗剪承載力以及混凝土組合板內(nèi)置或不內(nèi)置抗剪件對組合板粘結(jié)性能的影響。采用規(guī)范理論公式計算了單個螺釘抗剪承載力，理論計算結(jié)果與試驗(yàn)結(jié)果吻合較好。破壞模式表現(xiàn)為：螺釘抗剪破壞、混凝土與壓型鋼板粘結(jié)破壞、壓型鋼板承壓或失穩(wěn)破壞?；炷僚c壓型鋼板粘結(jié)開裂前，內(nèi)置抗剪件能夠提高連接抗剪剛度，減小滑移；內(nèi)置抗剪件的螺釘抗剪承載力比不內(nèi)置抗剪件的偏低。建議混凝土和壓型鋼板之間內(nèi)置冷彎薄壁型鋼抗剪件；當(dāng)混凝土與壓型鋼板間考慮或不考慮組合效應(yīng)時，螺釘連接抗剪承載力應(yīng)采用不同理論計算方法。
［關(guān)鍵詞］混凝土組合板; 冷彎薄壁型鋼; 自攻螺釘; 抗剪承載力; 試驗(yàn)研究; 破壞模式
中圖分類號：TU398+.9，TU317+.1 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)04-0021-04
Experimental study on shear behavior of screw connections between concrete composite plate and cold-formed thin-walled steel
Jia Ziwen1, Zhou Xuhong1,2, Liu Yongjian1
(1 Key Laboratory for Highway Bridge and Tunnel of Shaanxi Provincial, Chang’an University, Xi’an 710064, China; 2 School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China)
Abstract: Connecting concrete composite plate and cold-formed thin-walled steel components with self-tapping screws as shear model, monotonic loading tests were carried out. Shear failure mode on the interface of screws connection, the shear capacity of screws and influence of shear connectors in concrete composite plate on bond behavior of composite plate were analyzed. Shear capacity of single screw was calculated by code formula and the test results match theoretic results very well. The failure modes are shear failure of screws, bond failure of concrete and profiled steel sheet, and instability failure or bearing failure of profiled steel sheet. Before cracking of bond between concrete and profiled steel sheet, shear connectors inside can increase the shear stiffness of connection and reduce slippage. Shear capacity of screws is a little lower than that of the screws without shear connectors inside. Cold-formed thin-walled steel shear connectors are suggested to use between concrete and profiled steel sheet. Different theoretic calculation methods for shear capacity of screws are necessary according to the consideration of composite effect of concrete and profiled steel sheet.
Keywords: concrete composite plate; cold-formed thin-walled steel; self-tapping screw; shear capacity; experimental study; failure mode
*國家自然科學(xué)基金項(xiàng)目（50578013）。
作者簡介：賈子文，博士后，高級工程師，Email: ziwenjia@163.com。
參考文獻(xiàn)
［1］STEINBERG E, SELLE R, FAUST T. Connectors for timber-lightweight concrete composite structures［J］. Journal of Structural Engineer, 2003, 129(11): 1538-1545.
［2］HANAOR A. Tests of composite beams with cold-formed sections［J］. Journal of Constructional Steel Research, 2000, 54(2): 245-264.
［3］周緒紅, 賈子文. 冷彎薄壁型鋼-混凝土組合樓蓋受彎承載力試驗(yàn)研究［J］. 建筑結(jié)構(gòu)學(xué)報, 2010, 31(7): 13-22.
［4］CLOUSTON P, CIVJAN S, BATHON L. Experimental behavior of a continuous metal connector for a wood-concrete composite system［J］. Forest Products Journal, 2004, 54(6): 1-9.
［5］GB 50018─2002 冷彎薄壁型鋼結(jié)構(gòu)技術(shù)規(guī)范［S］. 北京: 中國計劃出版社, 2002.
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