双相体不锈钢筋与混凝土黏结性能试验及有限元模拟
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摘要
通过对11组共66个双相体不锈钢筋混凝土试件进行中心拉拔试验,研究混凝土强度、钢筋直径、锚固长度、保护层厚度及配箍率对双相体不锈钢筋混凝土黏结锚固性能的影响,并与普通碳素钢筋做对比试验。基于试验结果,根据混凝土力学的Ottosen准则及微观传力模型,统计回归出双相体不锈钢筋黏结强度计算公式。运用ABAQUS有限元分析程序,利用非线性弹簧单元,对双相体不锈钢筋与混凝土之间的黏结滑移进行有限元模拟分析。结果表明,双相体不锈钢筋与普通碳素钢筋在混凝土中的黏结性能相似;荷载-滑移曲线的模拟结果与试验结果符合较好。
Based on the 11 th group of 66 duplex stainless steel reinforced concrete specimens pull-out tests,the influence of concrete strength,steel bar diameter,anchorage length,thickness of concrete cover and stirrup ratio on the bond performance of steel reinforced concrete with duplex stainless steel was studied,and compared with ordinary carbon steel bars.Based on the Ottosen criterion of concrete mechanics and the micro force transfer model,the bond strength calculation formula of the duplex stainless steel bar are calculated by the test results.Based on the experimental results,using the finite element analysis program of ABAQUS,the bond slip between the double phase stainless steel and concrete is simulated and analyzed by using nonlinear spring element.The results show that the bonding performance of the double phase stainless steel is similar to that of ordinary carbon steel bar in concrete,and the simulation results of load slip curves are in good agreement with the experimental results.
Based on the 11 th group of 66 duplex stainless steel reinforced concrete specimens pull-out tests,the influence of concrete strength,steel bar diameter,anchorage length,thickness of concrete cover and stirrup ratio on the bond performance of steel reinforced concrete with duplex stainless steel was studied,and compared with ordinary carbon steel bars.Based on the Ottosen criterion of concrete mechanics and the micro force transfer model,the bond strength calculation formula of the duplex stainless steel bar are calculated by the test results.Based on the experimental results,using the finite element analysis program of ABAQUS,the bond slip between the double phase stainless steel and concrete is simulated and analyzed by using nonlinear spring element.The results show that the bonding performance of the double phase stainless steel is similar to that of ordinary carbon steel bar in concrete,and the simulation results of load slip curves are in good agreement with the experimental results.
引文
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[3]MARKESET G,ROSTAM S,KLIBGHOFFER O.Guide for the use of stalnless steel reinforcement in concrete structures[R].Norwegian Building Research Institute,2006.
[4]王元清,袁焕新,石永久,等.不锈钢结构及其应用和研究现状[J].钢结构,2010(2):1-13.
[5]Research Annual Reports(FY2000-FY2002),Department of transportation,Michigan Technological University[J].USA,2003.
[6]G.J.Vanden Berg,梁爱华.不锈钢钢筋用于混凝土的研究[J].建筑技术,2000,31(2):105-107.
[7]ZHANG G X,WU M M.Experimental research on the bond-anchorage properties conference of stainless steel reinforced concrete on durability of concrete structures[J].Proceedings of the international Zhejiang University publishing,2008:681-686.
[8]陈子晴.不锈钢钢筋混凝土桥墩冲击性能试验研究[D].广州:广东工业大学,2015.
[9]张国学,赵峰.不锈钢钢筋混凝土梁抗震性能试验研究[J].中国铁道科学,2010,31(5):35-40.
[10]张颖.不锈钢钢筋混凝土板疲劳性能试验研究[D].广州:广东工业大学,2015.
[11]耿会涛.桥梁用不锈钢筋与构件受力性能试验研究[D].郑州:郑州大学,2013.
[12]英国标准学会.混凝土增强和使用的不锈钢材要求和试验方法:BS 6744-2001+A2-2009[S].GB-BSI,2009.
[13]金属拉伸试验方法:GB 228-2010[S].北京:中国标准出版社,2010.
[14]普通混凝土力学性能试验方法标准:GB/T 50081-2012[S].北京:中国建筑工业出版社,2012.
[15]混凝土结构设计规范:GB 50010-2010[S].北京:中国建筑工业出版社,2010.
[16]混凝土结构试验方法标准:GB 50152-2012[S].北京:中国建筑工业出版社,2012.
[17]徐有邻.变形钢筋-混凝土粘结性能试验研究[D].北京:清华大学,1990.
[18]徐有邻,沈文都,汪洪.钢筋混凝土粘结锚固性能的试验研究[J].建筑结构学报,1994,15(3):26-37.
[19]徐有邻.钢筋与混凝土粘结锚固的分析研究[J].建筑科学,1992,4(3):18-24.
[20]毛达岭,刘立新,等.HRB500级钢筋粘结锚固性能的试验研究[J].工业建筑,2004,34(12):67-69.