开孔波折板连接件破坏机理及承载力试验研究
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陈建兵1,万水2,尤元宝1(1 苏州科技学院土木工程学院， 苏州 215011； 2 东南大学交通学院， 南京 210096)［摘要］通过18组开孔波折板连接件的静载推出试验，研究了连接件的荷载滑移性能、应变（应力）发展规律和破坏机理，探讨了混凝土强度等级、开孔直径、贯穿钢筋直径及数量、波高、波折角度、开孔个数、双板间距等因素对开孔波折板连接件承载力和抗剪刚度的影响。结果表明，各组试件具有相似的滑移趋势，设置贯穿钢筋的连接件表现出塑性破坏特征；开孔波折板波折面受到较大的混凝土局压作用，焊接边钢板应力大于自由边钢板应力，贯穿钢筋应变随连接件波高的增加而减小；提高混凝土等级、增大开孔直径、增大贯穿钢筋面积和数量、增大波高等措施可提高开孔波折板连接件的受剪承载力，改变波折角度对连接件的受剪承载力影响较小；随着混凝土强度等级、贯穿钢筋面积及波高的增加，试件抗剪刚度也随之增大，而其他因素的改变对抗剪刚度无明显的影响；提出了开孔波折板连接件受剪承载力的计算公式，计算结果能较好地吻合试验值。［关键词］开孔波折板连接件； 推出试验； 破坏机理； 影响因素； 受剪承载力中图分类号：TU398， TU317文献标识码：A文章编号：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*国家自然科学基金（50078014）,住建部科学技术项目（2009K225）。作者简介：陈建兵，副教授，Email: szctt2009@163.com。参考文献［1］聂建国.钢混凝土组合梁结构试验、理论与应用［M］.北京:科学出版社，2005.［2］白玲，史志强，史永吉.剪力连接件布置方式对连续组合梁桥受力特性的影响［J］.中国铁道科学，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］胡建华，叶梅新，黄琼. PBL 剪力连接件承载力试验［J］.中国公路学报,2006,19（6）：6572.［5］薛伟辰，代燕，周良，等.开孔板连接件受剪性能试验研究［J］.建筑结构学报，2009,30（5）：103111.［6］万水.一种翼缘型抗剪连接件:中国,CN201053146［P］.2008\|04\|30.［7］李淑琴,万水，陈建兵.一种新型抗剪连接件试验研究［J］.桥梁建设,2009，39(4)：1719.［8］陈建兵，万水，刘凡. 具有新型连接件的钢混组合梁界面滑移试验与分析研究［J］.桥梁建设，2011，41(3)：4447.［9］陈建兵，赵文娟，尤元宝，等. 基于波折开孔钢板连接件组合梁界面特性有限元分析［J］.混凝土与水泥制品，2011，39(8)：5761.［10］陈建兵，万水，尤元宝，等. 基于波折开孔钢板连接件的组合梁受力性能试验研究［J］.建筑结构，2012，42(10)：7578.
