開孔波折板連接件破壞機(jī)理及承載力試驗(yàn)研究
陳建兵1,萬水2,尤元寶1
- 摘 要
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陳建兵1,萬水2,尤元寶1(1 蘇州科技學(xué)院土木工程學(xué)院， 蘇州 215011； 2 東南大學(xué)交通學(xué)院， 南京 210096)［摘要］通過18組開孔波折板連接件的靜載推出試驗(yàn)，研究了連接件的荷載滑移性能、應(yīng)變（應(yīng)力）發(fā)展規(guī)律和破壞機(jī)理，探討了混凝土強(qiáng)度等級、開孔直徑、貫穿鋼筋直徑及數(shù)量、波高、波折角度、開孔個數(shù)、雙板間距等因素對開孔波折板連接件承載力和抗剪剛度的影響。結(jié)果表明，各組試件具有相似的滑移趨勢，設(shè)置貫穿鋼筋的連接件表現(xiàn)出塑性破壞特征；開孔波折板波折面受到較大的混凝土局壓作用，焊接邊鋼板應(yīng)力大于自由邊鋼板應(yīng)力，貫穿鋼筋應(yīng)變隨連接件波高的增加而減?。惶岣呋炷恋燃?、增大開孔直徑、增大貫穿鋼筋面積和數(shù)量、增大波高等措施可提高開孔波折板連接件的受剪承載力，改變波折角度對連接件的受剪承載力影響較小；隨著混凝土強(qiáng)度等級、貫穿鋼筋面積及波高的增加，試件抗剪剛度也隨之增大，而其他因素的改變對抗剪剛度無明顯的影響；提出了開孔波折板連接件受剪承載力的計算公式，計算結(jié)果能較好地吻合試驗(yàn)值。［關(guān)鍵詞］開孔波折板連接件； 推出試驗(yàn)； 破壞機(jī)理； 影響因素； 受剪承載力中圖分類號：TU398， TU317文獻(xiàn)標(biāo)識碼：A文章編號：1002848X(2013)12007407Experimental study on failure modes and bearing capacity of perforatedcorrugated plate connectorsChen Jianbing1, Wan Shui2, You Yuanbao1f Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China;2 Transportation College, Southeast University, Nanjing 210096, China)Abstract:The results from static pushout tests on eighteen groups perforated corrugated plate connector were presented, the loadslippage characteristics of perforated corrugated plate connector, the change rule of strain(stress) and the failure modes were studied, the effects of concrete compressive strength, the hole diameter, diameter and amount of the transverse rebar, the height of wave, the angle of bend, the hole number, the spacing of the connectors on bearing capacity and shearing stiffness were discussed. The conclusions showed that each specimen has the similar sliding tread. The specimens of setting the transverse rebar show plastic damage characteristics; the surface of twists and turns bear larger concrete local press; the misses stress of the welding side is greater than free side, the strain of transverse rebar decreasing with the increase of the height of wave; improving the concrete compressive strength, increasing the hole diameter, the area and amount of transverse rebar, the height of wave can increase the shearing capacity of perforated corrugated plate connector, while the different angles of bend have little influence on shearing capacity; with the increasing of concrete compressive strength, the area of transverse rebar and the height of wave, the shearing stiffness also becomes larger, while the change of other factors have no obvious influence on shearing stiffness. And the formulas for calculating the shear resistance of the perforated corrugated plate connector were presented, the calculation results are well agreement with the experimental results.Keywords: perforated corrugated plate connector; pushout test; failure modes; influence factor; shear resistance*國家自然科學(xué)基金（50078014）,住建部科學(xué)技術(shù)項目（2009K225）。作者簡介：陳建兵，副教授，Email: szctt2009@163.com。參考文獻(xiàn)［1］聶建國.鋼混凝土組合梁結(jié)構(gòu)試驗(yàn)、理論與應(yīng)用［M］.北京:科學(xué)出版社，2005.［2］白玲，史志強(qiáng)，史永吉.剪力連接件布置方式對連續(xù)組合梁橋受力特性的影響［J］.中國鐵道科學(xué)，2003,24（2）：6771.［3］OGUEJIOFOR E C，HOSAIN M U. Numerical analysis of pushout specimens with perfobond rib connector［J］. Computers and Structures, 1997,62(4): 617624.［4］胡建華，葉梅新，黃瓊. PBL 剪力連接件承載力試驗(yàn)［J］.中國公路學(xué)報,2006,19（6）：6572.［5］薛偉辰，代燕，周良，等.開孔板連接件受剪性能試驗(yàn)研究［J］.建筑結(jié)構(gòu)學(xué)報，2009,30（5）：103111.［6］萬水.一種翼緣型抗剪連接件:中國,CN201053146［P］.2008\|04\|30.［7］李淑琴,萬水，陳建兵.一種新型抗剪連接件試驗(yàn)研究［J］.橋梁建設(shè),2009，39(4)：1719.［8］陳建兵，萬水，劉凡. 具有新型連接件的鋼混組合梁界面滑移試驗(yàn)與分析研究［J］.橋梁建設(shè)，2011，41(3)：4447.［9］陳建兵，趙文娟，尤元寶，等. 基于波折開孔鋼板連接件組合梁界面特性有限元分析［J］.混凝土與水泥制品，2011，39(8)：5761.［10］陳建兵，萬水，尤元寶，等. 基于波折開孔鋼板連接件的組合梁受力性能試驗(yàn)研究［J］.建筑結(jié)構(gòu)，2012，42(10)：7578.
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