纤维增强复材-钢界面有效黏结长度模型对比研究
|
摘要
采用外贴纤维增强复合材料(FRP)加固修复钢结构近年来得到广泛应用,外贴FRP与钢界面之间存在有效黏结长度,当黏结长度大于该长度时,界面黏结强度不再随长度增加。因此,有效黏结长度是FRP加固修复钢结构设计时确定界面黏结长度的重要参数。通过对已有FRP-钢界面有效黏结长度模型的总结,建立了包括31组有效黏结长度试验结果的数据库,对已有模型预测有效黏结长度的准确性和设计黏结长度的适用性进行了对比评估。与试验结果对比表明:Xia-Teng模型对有效黏结长度试验值的预测最准确,但已有的有效黏结长度模型预测结果均不够安全,不能直接用于FRP-钢界面黏结长度设计。为此,基于Xia-Teng模型,分析建议了FRP-钢界面黏结长度设计方法。该建议方法保守且合理,可用于FRP加固修复钢结构设计。
Recently,the use of externally bonded fiber reinforced polymer( FRP) for strengthening steel structures has attracted significant attention. For an externally bonded FRP-to-steel interface,there is an effective bond length,beyond which the bond strength of the interface does not increase. Thus,the effective bond length is important for the design of the bond length. The paper collected existing effective bond length models and established a database containing the test results of 31 bonded joints. A comparative research on the accuracy of existing models for predicting the test results and the applicability of existing models for design the bond lengths was presented. Compared with test data,the results showed that Xia-Teng's model was of the highest accuracy for predicting the effective bond lengths. However,the predictions by existing effective bond length models were non-conservative and could not be directly used for the design of the bond lengths between FRP and steel. Based on Xia-Teng's models,an analysis was conducted and a design method was proposed for the bond lengths of FRP-to-steel interfaces. The proposed method is conservative and reasonable and can be applied for the design of the bond lengths of FRP-strengthened steel structures.
Recently,the use of externally bonded fiber reinforced polymer( FRP) for strengthening steel structures has attracted significant attention. For an externally bonded FRP-to-steel interface,there is an effective bond length,beyond which the bond strength of the interface does not increase. Thus,the effective bond length is important for the design of the bond length. The paper collected existing effective bond length models and established a database containing the test results of 31 bonded joints. A comparative research on the accuracy of existing models for predicting the test results and the applicability of existing models for design the bond lengths was presented. Compared with test data,the results showed that Xia-Teng's model was of the highest accuracy for predicting the effective bond lengths. However,the predictions by existing effective bond length models were non-conservative and could not be directly used for the design of the bond lengths between FRP and steel. Based on Xia-Teng's models,an analysis was conducted and a design method was proposed for the bond lengths of FRP-to-steel interfaces. The proposed method is conservative and reasonable and can be applied for the design of the bond lengths of FRP-strengthened steel structures.
引文
[1]DENG J,LEE M M K.Behaviour Under Static Loading of Metallic Beams Reinforced with a Bonded CFRP Plate[J].Composite Structures,2007,78(2):232-242.
[2]YU Y,CHIEW S P,LEE C K.Bond Failure of Steel Beams Strengthened with FRP Laminates-Part 2:Verification[J].Composites Part B:Engineering,2011,42(5):1122-1134.
[3]HAGHANI R,AL M.A New Design Model for Adhesive Joints Used to Bond FRP Laminates to Steel Beams:Part B:Experimental Verification[J].Construction&Building Materials,2012,30:686-694.
[4]NARMASHIRI K,RAMLI SULONG N H,JUMAAT M Z.Failure Analysis and Structural Behaviour of CFRP Strengthened Steel I-Beams[J].Construction and Building Materials,2012,30:1-9.
[5]COLOMBI P,FAVA G.Experimental Study on the Fatigue Behaviour of Cracked Steel Beams Repaired with CFRP Plates[J].Engineering Fracture Mechanics,2015,145:128-142.
[6]DENG J,JIA Y,ZHENG H.Theoretical and Experimental Study on Notched Steel Beams Strengthened with CFRP Plate[J].Composite Structures,2016,136:450-459.
[7]XIA S H,TENG J G.Behaviour of FRP-to-Steel Bonded Joints[C]∥Proceedings of the International Symposium on Bond Behaviour of FRP in Structures(BBFS 2005).2005:411-418.
[8]卢亦焱,张号军,刘素丽.碳纤维布与钢板黏结剪切性能研究[J].土木工程学报,2006,39(10):60-67.
[9]FAWZIA S.Evaluation of Shear Stress and Slip Relationship of Composite Lap Joints[J].Composite Structures,2013,100:548-553.
[10]WANG H T,WU G,DAI Y T,et al.Determination of the BondSlip Behavior of CFRP-to-Steel Bonded Interfaces Using Digital Image Correlation[J].Journal of Reinforced Plastics and Composites,2016,35(18):1353-1367.
[11]COLOMBI P,POGGI C.Strengthening of Tensile Steel Members and Bolted Joints Using Adhesively Bonded CFRP Plates[J].Construction and Building Materials,2006,20(1/2):22-33.
[12]FAWZIA S,AL-MAHAIDI R,ZHAO X L.Experimental and Finite Element Analysis of a Double Strap Joint Between Steel Plates and Normal Modulus CFRP[J].Composite Structures,2006,75(1/2/3/4):156-162.
[13]LAM A C C,CHENG J J R,YAM M C H,et al.Repair of Steel Structures by Bonded Carbon Fibre Reinforced Polymer Patching:Experimental and Numerical Study of Carbon Fibre Reinforced Polymer-Steel Double-Lap Joints Under Tensile Loading[J].Canadian Journal of Civil Engineering,2007,34(12):1542-1553.
[14]BOCCIARELLI M,COLOMBI P,FAVA G,et al.Prediction of Debonding Strength of Tensile Steel/CFRP Joints Using Fracture Mechanics and Stress Based Criteria[J].Engineering Fracture Mechanics,2009,76(2):299-313.
[15]CHIEW S P,YU Y,LEE C K.Bond Failure of Steel Beams Strengthened with FRP Laminates-Part 1:Model Development[J].Composites Part B:Engineering,2011,42(5):1114-1121.
[16]AL-ZUBAIDY H,AL-MAHAIDI R,ZHAO X L.Experimental Investigation of Bond Characteristics Between CFRP Fabrics and Steel Plate Joints Under Impact Tensile Loads[J].Composite Structures,2012,94(2):510-518.
[17]WU C,ZHAO X L,HUI DUAN W,et al.Bond Characteristics Between Ultra High Modulus CFRP Laminates and Steel[J].Thin-Walled Structures,2012,51(2):147-157.
[18]AL-ZUBAIDY H,AL-MAHAIDI R,ZHAO X L.Finite Element Modelling of CFRP/Steel Double Strap Joints Subjected to Dynamic Tensile Loadings[J].Composite Structures,2013,99:48-61.
[19]AL-MOSAWE A,AL-MAHAIDI R,ZHAO X L.Effect of CFRPProperties,on the Bond Characteristics Between Steel and CFRPLaminate Under Quasi-Static Loading[J].Construction and Building Materials,2015,98:489-501.
[20]KORAYEM A H,LI C Y,ZHANG Q H,et al.Effect of Carbon Nanotube Modified Epoxy Adhesive on CFRP-to-Steel Interface[J].Composites Part B:Engineering,2015,79:95-104.
[21]AL-MOSAWE A,AL-MAHAIDI R,ZHAO X L.Experimental and Numerical Study on Strengthening of Steel Members Subjected to Impact Loading Using Ultrahigh Modulus CFRP[J].Journal of Composites for Construction,ASCE,2016,20(6):04016044.
[22]YANG Y,BISCAIA H,CHASTRE C,et al.Bond Characteristics of CFRP-to-Steel Joints[J].Journal of Constructional Steel Research,2017,138:401-419.
[23]ZHAO X L,ZHANG L.State-of-the-Art Review on FRPStrengthened Steel Structures[J].Engineering Structures,2007,29(8):1808-1823.
[24]TENG J G,YU T,FERNANDO D.Strengthening of Steel Structures with Fiber-Reinforced Polymer Composites[J].Journal of Constructional Steel Research,2012,78:131-143.
[25]BOCCIARELLI M,COLOMBI P,FAVA G,et al.Interaction of Interface Delamination and Plasticity in Tensile Steel Members Reinforced by CFRP Plates[J].International Journal of Fracture,2007,146(1):79-92.
[26]中华人民共和国工业和信息化部.纤维增强复合材料加固修复钢结构技术规程:YB/T 4558-2016[S].北京:冶金工业出版社,2017.
[27]HART-SMITH L J.Adhesive-Bonded Double-Lap Joints[J].International Journal of Solids&Structures,1973,31(21):2919-2931.
[28]HAGHANI R,AL-EMRANI M.A New Design Model for Adhesive Joints Used to Bond FRP Laminates to Steel Beams-Part A:Background and Theory[J].Construction and Building Materials,2012,34:486-493.
[29]DEHGHANI E,DANESHJOO F,AGHAKOUCHAK A A,et al.A New Bond-Slip Model for Adhesive in CFRP-Steel Composite Systems[J].Engineering Structures,2012,34:447-454.
[30]WU Z,YUAN H,NIU H.Stress Transfer and Fracture Propagation in Different Kinds of Adhesive Joints[J].Journal of Engineering Mechanics,ASCE,2002,128(5):562-573.
[31]FERNANDO N D.Bond Behaviour and Debonding Failures in CFRP-Strengthened Steel Members[D].Hong Kong:The Hong Kong Polytechnic University,2010.
[32]LIU H,ZHAO X L,AL-MAHAIDI R,et al.Analytical Bond Models Between Steel and Normal Modulus CFRP[C]∥Fourth International Conference on Advances in Steel Structures.Shanghai:2005.
[33]FAWZIA S.Bond Characteristics Between Steel and Carbon Fibre Reinforced Polymer(CFRP)Composites[D].Melbourne:Monash University,2007.
[2]YU Y,CHIEW S P,LEE C K.Bond Failure of Steel Beams Strengthened with FRP Laminates-Part 2:Verification[J].Composites Part B:Engineering,2011,42(5):1122-1134.
[3]HAGHANI R,AL M.A New Design Model for Adhesive Joints Used to Bond FRP Laminates to Steel Beams:Part B:Experimental Verification[J].Construction&Building Materials,2012,30:686-694.
[4]NARMASHIRI K,RAMLI SULONG N H,JUMAAT M Z.Failure Analysis and Structural Behaviour of CFRP Strengthened Steel I-Beams[J].Construction and Building Materials,2012,30:1-9.
[5]COLOMBI P,FAVA G.Experimental Study on the Fatigue Behaviour of Cracked Steel Beams Repaired with CFRP Plates[J].Engineering Fracture Mechanics,2015,145:128-142.
[6]DENG J,JIA Y,ZHENG H.Theoretical and Experimental Study on Notched Steel Beams Strengthened with CFRP Plate[J].Composite Structures,2016,136:450-459.
[7]XIA S H,TENG J G.Behaviour of FRP-to-Steel Bonded Joints[C]∥Proceedings of the International Symposium on Bond Behaviour of FRP in Structures(BBFS 2005).2005:411-418.
[8]卢亦焱,张号军,刘素丽.碳纤维布与钢板黏结剪切性能研究[J].土木工程学报,2006,39(10):60-67.
[9]FAWZIA S.Evaluation of Shear Stress and Slip Relationship of Composite Lap Joints[J].Composite Structures,2013,100:548-553.
[10]WANG H T,WU G,DAI Y T,et al.Determination of the BondSlip Behavior of CFRP-to-Steel Bonded Interfaces Using Digital Image Correlation[J].Journal of Reinforced Plastics and Composites,2016,35(18):1353-1367.
[11]COLOMBI P,POGGI C.Strengthening of Tensile Steel Members and Bolted Joints Using Adhesively Bonded CFRP Plates[J].Construction and Building Materials,2006,20(1/2):22-33.
[12]FAWZIA S,AL-MAHAIDI R,ZHAO X L.Experimental and Finite Element Analysis of a Double Strap Joint Between Steel Plates and Normal Modulus CFRP[J].Composite Structures,2006,75(1/2/3/4):156-162.
[13]LAM A C C,CHENG J J R,YAM M C H,et al.Repair of Steel Structures by Bonded Carbon Fibre Reinforced Polymer Patching:Experimental and Numerical Study of Carbon Fibre Reinforced Polymer-Steel Double-Lap Joints Under Tensile Loading[J].Canadian Journal of Civil Engineering,2007,34(12):1542-1553.
[14]BOCCIARELLI M,COLOMBI P,FAVA G,et al.Prediction of Debonding Strength of Tensile Steel/CFRP Joints Using Fracture Mechanics and Stress Based Criteria[J].Engineering Fracture Mechanics,2009,76(2):299-313.
[15]CHIEW S P,YU Y,LEE C K.Bond Failure of Steel Beams Strengthened with FRP Laminates-Part 1:Model Development[J].Composites Part B:Engineering,2011,42(5):1114-1121.
[16]AL-ZUBAIDY H,AL-MAHAIDI R,ZHAO X L.Experimental Investigation of Bond Characteristics Between CFRP Fabrics and Steel Plate Joints Under Impact Tensile Loads[J].Composite Structures,2012,94(2):510-518.
[17]WU C,ZHAO X L,HUI DUAN W,et al.Bond Characteristics Between Ultra High Modulus CFRP Laminates and Steel[J].Thin-Walled Structures,2012,51(2):147-157.
[18]AL-ZUBAIDY H,AL-MAHAIDI R,ZHAO X L.Finite Element Modelling of CFRP/Steel Double Strap Joints Subjected to Dynamic Tensile Loadings[J].Composite Structures,2013,99:48-61.
[19]AL-MOSAWE A,AL-MAHAIDI R,ZHAO X L.Effect of CFRPProperties,on the Bond Characteristics Between Steel and CFRPLaminate Under Quasi-Static Loading[J].Construction and Building Materials,2015,98:489-501.
[20]KORAYEM A H,LI C Y,ZHANG Q H,et al.Effect of Carbon Nanotube Modified Epoxy Adhesive on CFRP-to-Steel Interface[J].Composites Part B:Engineering,2015,79:95-104.
[21]AL-MOSAWE A,AL-MAHAIDI R,ZHAO X L.Experimental and Numerical Study on Strengthening of Steel Members Subjected to Impact Loading Using Ultrahigh Modulus CFRP[J].Journal of Composites for Construction,ASCE,2016,20(6):04016044.
[22]YANG Y,BISCAIA H,CHASTRE C,et al.Bond Characteristics of CFRP-to-Steel Joints[J].Journal of Constructional Steel Research,2017,138:401-419.
[23]ZHAO X L,ZHANG L.State-of-the-Art Review on FRPStrengthened Steel Structures[J].Engineering Structures,2007,29(8):1808-1823.
[24]TENG J G,YU T,FERNANDO D.Strengthening of Steel Structures with Fiber-Reinforced Polymer Composites[J].Journal of Constructional Steel Research,2012,78:131-143.
[25]BOCCIARELLI M,COLOMBI P,FAVA G,et al.Interaction of Interface Delamination and Plasticity in Tensile Steel Members Reinforced by CFRP Plates[J].International Journal of Fracture,2007,146(1):79-92.
[26]中华人民共和国工业和信息化部.纤维增强复合材料加固修复钢结构技术规程:YB/T 4558-2016[S].北京:冶金工业出版社,2017.
[27]HART-SMITH L J.Adhesive-Bonded Double-Lap Joints[J].International Journal of Solids&Structures,1973,31(21):2919-2931.
[28]HAGHANI R,AL-EMRANI M.A New Design Model for Adhesive Joints Used to Bond FRP Laminates to Steel Beams-Part A:Background and Theory[J].Construction and Building Materials,2012,34:486-493.
[29]DEHGHANI E,DANESHJOO F,AGHAKOUCHAK A A,et al.A New Bond-Slip Model for Adhesive in CFRP-Steel Composite Systems[J].Engineering Structures,2012,34:447-454.
[30]WU Z,YUAN H,NIU H.Stress Transfer and Fracture Propagation in Different Kinds of Adhesive Joints[J].Journal of Engineering Mechanics,ASCE,2002,128(5):562-573.
[31]FERNANDO N D.Bond Behaviour and Debonding Failures in CFRP-Strengthened Steel Members[D].Hong Kong:The Hong Kong Polytechnic University,2010.
[32]LIU H,ZHAO X L,AL-MAHAIDI R,et al.Analytical Bond Models Between Steel and Normal Modulus CFRP[C]∥Fourth International Conference on Advances in Steel Structures.Shanghai:2005.
[33]FAWZIA S.Bond Characteristics Between Steel and Carbon Fibre Reinforced Polymer(CFRP)Composites[D].Melbourne:Monash University,2007.