FRP加固技术研究新进展
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摘要
纤维增强复合材料(FRP)在加固工程中的应用是土木工程研究热点之一。围绕国内外FRP加固技术的研究现状以及最新进展,从混杂纤维材料(HFRP)加固、FRP加固砌体结构、预应力碳纤维布(CFRP)加固、CFRP与钢板复合加固混凝土结构等技术的研究方面进行综述。试验研究表明:混杂纤维加固柱的承载力和变形能力优于单一纤维加固,且在承载力提高幅度相同的情况下,成本显著低于CFRP加固柱;FRP加固砌体结构可以提高砌体结构的抗震、抗剪和平面外抗弯性能;预应力CFRP加固技术结合了预应力技术和FRP粘贴技术,能明显提高梁的刚度、屈服荷载和极限荷载,其提高程度随预应力CFRP的用量和预应力水平的提高而增大。预应力加固的研究主要集中于预应力控制值、端部锚固和预应力损失方面。CFRP与钢板复合加固混凝土结构技术作为一种新型的加固技术,可以直接利用钢材参与受力,钢材形成的骨架在约束混凝土变形的同时,还提高了CFRP的利用效率,从而大幅度提高构件的极限承载力,改善构件的工作性能。
The application of Fiber Reinforced Plastics(FRP) in reinforcement engineering is one of the most popular fields in the studies of civil engineering.A concise state-of-the-art survey and new progress of the technology of FRP strengthening are presented,including studies in terms of hybrid fiber reinforced plastics(HFRP),masonry structures strengthening with FRP,prestressed carbon fiber reinforced plastics(CFRP) strengthening and combination strengthening with both CFRP and steel sheets.Experimental studies show that both the load carrying capacity and the plasticity of concrete columns strengthened by means of HFRP are significantly higher than those strengthened with single type of fiber,and that with the same bearing capacity increase,HFRP strengthening cost is greatly reduced comparing with that of CFRP strengthening.With the FRP strengthening system,performances of masonry structures increase obviously in terms of seismic resistance,shear resistance and flexural capacity out of plane.Combined with technique of prestressing and bonding FRP,prestressed CFRP strengthening system can significantly increase the rigidity,yield loads and ultimate capacity of concrete beams.The degree of increase depends on the ratio and prestressing level of CFRP.Studies on prestressing strengthening are focused on prestressing level,end anchorage and prestressing losing etc.As a new type of strengthening technique,combination strengthening with bonding CFRP and steel sheets can greatly improve the ultimate carrying capacity and the performance of concrete structures,because the steel sheets,which directly work together with concrete,can confine the deformation of concrete and meanwhile increase the efficiency of CFRP.
The application of Fiber Reinforced Plastics(FRP) in reinforcement engineering is one of the most popular fields in the studies of civil engineering.A concise state-of-the-art survey and new progress of the technology of FRP strengthening are presented,including studies in terms of hybrid fiber reinforced plastics(HFRP),masonry structures strengthening with FRP,prestressed carbon fiber reinforced plastics(CFRP) strengthening and combination strengthening with both CFRP and steel sheets.Experimental studies show that both the load carrying capacity and the plasticity of concrete columns strengthened by means of HFRP are significantly higher than those strengthened with single type of fiber,and that with the same bearing capacity increase,HFRP strengthening cost is greatly reduced comparing with that of CFRP strengthening.With the FRP strengthening system,performances of masonry structures increase obviously in terms of seismic resistance,shear resistance and flexural capacity out of plane.Combined with technique of prestressing and bonding FRP,prestressed CFRP strengthening system can significantly increase the rigidity,yield loads and ultimate capacity of concrete beams.The degree of increase depends on the ratio and prestressing level of CFRP.Studies on prestressing strengthening are focused on prestressing level,end anchorage and prestressing losing etc.As a new type of strengthening technique,combination strengthening with bonding CFRP and steel sheets can greatly improve the ultimate carrying capacity and the performance of concrete structures,because the steel sheets,which directly work together with concrete,can confine the deformation of concrete and meanwhile increase the efficiency of CFRP.
引文
[1]王善元,张汝光.纤维增强复合材料[M].上海:中国纺织大学出版社,1998.
[2]熊光晶,姜浩,杨建中.混杂纤维复合材料及其在混凝土梁柱加固中的应用研究[J].工业建筑,2001,31(9):11—13.
[3]蒋小青,熊光晶,刘金伟.混杂纤维复合材料加固混凝土梁的合理方法[J].建筑技术开发,2003,30(3):57—59.
[4]杨建中,熊光晶,蒋小青,等.用混杂纤维复合材料预制圆套筒加固混凝土方柱的性能研究[J].混凝土与水泥制品,2002,(1):33—35.
[5]熊光晶,蒋小青,杨建中,等.高强玻璃纤维碳纤维布混杂加固混凝土梁柱的试验研究[J].工业建筑,2003,33(9):14—15.
[6]蒋小青,熊光晶,岑杰雄,等.碳纤/高强玻纤层间混杂圆筒加固混凝土方柱的试验研究[J].建筑技术,2003,34(6):445—446.
[7]Croco G,Ayala D,Asdia P,etc.Analysis on Shear Walls Reinforced with Fibers[A].IABSE Symp on Safety andQuality Assurance of Civil Engineering Structures[C].Tokyo:IABSE,1987:125—132.
[8]Sweidan R I.The Application of Fiber Reinforced Plastics to the Strengthening of Masonry Structures[D].USA:Massachusetts Institute of Technology,1991.
[9]岳清瑞.第二届中国纤维增强塑料(FRP)混凝土结构学术交流会论文集[C].北京:清华大学出版社,2002.
[10]Ehsani M R,Saadatmanesh H.Shear Behavior of URM Retrofitted with FRP Overlays[J].Journal of Compositesfor Construction,1997,1(1):17—25.
[11]Corradi M,Borri A,Vignoli A.Strengthening Techniques Tested on Masonry Structures Struck by the Umbria-Marche Earthquake of 1997—1998[J].Construction and Building Materials,2002,16(4):229—239.
[12]蔡志鸿.芳纶纤维布加固砖砌体的抗剪性能试验研究[D].福建:华侨大学,2004.
[13]黄奕辉,王全凤,杨勇新,等.AFRP加固砖砌墙体的抗剪性能试验[J].工业建筑,2004,34(7):275—278.
[14]赵彤.碳纤维布用于砖砌体抗震加固的试验研究[J].地震工程与工程振动,2001,21(2):89—95.
[15]赵彤,张晨军,谢剑,等.碳纤维布加固修复砖砌体的研究与工程实践[J].建筑结构,2002,32(3):64—67.
[16]于敬海,赵彤,罗振彪,等.用碳纤维布改善混凝土小型空心砌块墙体抗震性能的试验研究[J].地震工程与工程振动,2003,23(1):103—109.
[17]王欣,陆洲导,吕西林.碳纤维布技术在砌体结构抗震加固中的试验研究[J].工业建筑,2003,33(9):11—13.
[18]Schwegler G.Strengthening of Masonry with Fiber Composites[D].Zurich:University of Zurich,1994.
[19]彭少民,张祥顺,管克俭,等.CFRP加固带窗洞砌体结构试验研究[J].河南科学,2002,20(6):693—696.
[20]卢会芳.碳纤维布加固带洞口砌体墙试验研究[D].武汉:武汉理工大学,2003.
[21]张祥顺,吴辉琴,彭少民.CFRP对无构造柱墙体抗震加固试验研究[J].华中科技大学学报(城市科学版),2002,19(3):13—16.
[22]张祥顺,谷倩,彭少民.CFRP对砖墙抗震加固对比试验研究与计算分析[J].世界地震工程,2003,19(1):77—82.
[23]张祥顺,谷倩,管克俭,等.碳纤维布加固砌体结构试验研究[J].武汉理工大学学报,2002,24(11):29—32.
[24]Michael L A,Alaa E E,Cheng J T.Strengthening of Unreinforced Masonry Walls Using FRPs[J].Journal ofComposites for Construction,2001,5(2):76—84.
[25]飞渭,江世永,彭飞飞.预应力碳纤维布加固混凝土受弯构件试验研究[J].四川建筑科学研究,2003,29(2):56—60.
[26]尚守平,彭晖.预应力碳纤维布材加固混凝土受弯构件的抗弯性能研究[J].建筑结构学报,2003,24(5):24—30.
[27]叶列平,庄江波,曾攀,等.预应力碳纤维布加固钢筋混凝土T形梁的试验研究[J].工业建筑,2005,35(8):7—12.
[28]Wight R G,Green M F.Prestressed FRP Sheets for Poststrengthening Reinforced Concrete Beams[J].Journal ofComposites for Construction.2001,5(4):214—220.
[29]Piyong Y,Silva P F.Flexural Strengthening of Concrete Slabs by a Three-Stage Prestressing FRP System Enhancedwith the Presence of GFRP Anchor Spikes[A].Proceedings of CCC 2003—Composites in Construction InternationalConference[C].Italy:University of Calabria,2003:203—208.
[30]Wight R G,Hacha R E.Prestressed CFRP Sheet for Strengthening Reinforced Concrete Structures in Fatigue[A].Proceedings of the 6th International Symposium on FRP Reinforcement for Concrete Structures[C].Singapore:World Scientific Press,2003:895—904.
[31]Triantafillou,Deskovic.Innovative Prestressing with FRP Sheets:Mechanics of Short-Term Behavior[J].Journal ofEngineering Mechanics,1991,117(7):1652—1672.
[32]Garden H N,Hollaway.An Experimental Study of the Strengthening of Reinforced Concrete Beams Using Pres-tressed Carbon Composite Plates[A].Proceeding of the 7th International Conference on Extending the Life of Bridge[C].Edinburgh:Press of University of Edingurgh,1997:191—199.
[33]Deuring M.Post-Strengthening of Concrete Structures with Pretensioned Advanced Composites[Z].EMPA ReportNo 224,1993.
[34]Merier U.Strengthening of Structures Using Carbon Fiber Composites[J].Construction and Building Materials,1995,9(9):191—199.
[35]牛赫东,吴智深.预应力FRP纤维布粘结补强技术中的界面剪切应力传递[A].第二界全国土木工程纤维增强材料(FRP)应用技术学术交流会论文集[C].北京:清华大学出版社,2002:74—85.
[36]Hacha E,Green M F.Prestressed Fiber-Reinforced Polymer Laminates for Strengthening Structures[J].Progressin Structural Engineering and Materials,2001,3(2):111—121.
[37]吴涛.预应力CFRP加固钢梁抗弯性能研究[D].武汉:武汉大学,2005.
[38]卢亦焱.一种加固混凝土受压构件的方法[P].中国专利:ZL01133612.9,2003.
[39]卢亦焱,史健勇,赵国藩.碳纤维布和角钢复合加固轴心受压混凝土柱的试验研究[J].建筑结构学报,2003,24(5):18—23.
[40]史健勇.碳纤维布加固混凝土梁柱承载力研究[D].武汉:武汉大学,2001.
[41]欧添雁.外包角钢与碳纤维布复合加固钢筋混凝土中长柱试验研究[D].武汉:武汉大学,2004.
[42]童光兵.外包钢和碳纤维布复合加固钢筋混凝土偏压柱研究[D].武汉:武汉大学,2004.
[43]张华.碳纤维布和角钢复合加固钢筋混凝土柱抗剪性能研究[D].武汉:武汉大学,2005.
[44]陈少雄.外包钢与碳纤维布复合加固钢筋混凝土柱抗震性能研究[D].武汉:武汉大学,2004.
[45]周婷.,碳纤维布与钢板复合加固钢筋混凝土梁抗弯性能研究[D].武汉:武汉大学,2004.
[2]熊光晶,姜浩,杨建中.混杂纤维复合材料及其在混凝土梁柱加固中的应用研究[J].工业建筑,2001,31(9):11—13.
[3]蒋小青,熊光晶,刘金伟.混杂纤维复合材料加固混凝土梁的合理方法[J].建筑技术开发,2003,30(3):57—59.
[4]杨建中,熊光晶,蒋小青,等.用混杂纤维复合材料预制圆套筒加固混凝土方柱的性能研究[J].混凝土与水泥制品,2002,(1):33—35.
[5]熊光晶,蒋小青,杨建中,等.高强玻璃纤维碳纤维布混杂加固混凝土梁柱的试验研究[J].工业建筑,2003,33(9):14—15.
[6]蒋小青,熊光晶,岑杰雄,等.碳纤/高强玻纤层间混杂圆筒加固混凝土方柱的试验研究[J].建筑技术,2003,34(6):445—446.
[7]Croco G,Ayala D,Asdia P,etc.Analysis on Shear Walls Reinforced with Fibers[A].IABSE Symp on Safety andQuality Assurance of Civil Engineering Structures[C].Tokyo:IABSE,1987:125—132.
[8]Sweidan R I.The Application of Fiber Reinforced Plastics to the Strengthening of Masonry Structures[D].USA:Massachusetts Institute of Technology,1991.
[9]岳清瑞.第二届中国纤维增强塑料(FRP)混凝土结构学术交流会论文集[C].北京:清华大学出版社,2002.
[10]Ehsani M R,Saadatmanesh H.Shear Behavior of URM Retrofitted with FRP Overlays[J].Journal of Compositesfor Construction,1997,1(1):17—25.
[11]Corradi M,Borri A,Vignoli A.Strengthening Techniques Tested on Masonry Structures Struck by the Umbria-Marche Earthquake of 1997—1998[J].Construction and Building Materials,2002,16(4):229—239.
[12]蔡志鸿.芳纶纤维布加固砖砌体的抗剪性能试验研究[D].福建:华侨大学,2004.
[13]黄奕辉,王全凤,杨勇新,等.AFRP加固砖砌墙体的抗剪性能试验[J].工业建筑,2004,34(7):275—278.
[14]赵彤.碳纤维布用于砖砌体抗震加固的试验研究[J].地震工程与工程振动,2001,21(2):89—95.
[15]赵彤,张晨军,谢剑,等.碳纤维布加固修复砖砌体的研究与工程实践[J].建筑结构,2002,32(3):64—67.
[16]于敬海,赵彤,罗振彪,等.用碳纤维布改善混凝土小型空心砌块墙体抗震性能的试验研究[J].地震工程与工程振动,2003,23(1):103—109.
[17]王欣,陆洲导,吕西林.碳纤维布技术在砌体结构抗震加固中的试验研究[J].工业建筑,2003,33(9):11—13.
[18]Schwegler G.Strengthening of Masonry with Fiber Composites[D].Zurich:University of Zurich,1994.
[19]彭少民,张祥顺,管克俭,等.CFRP加固带窗洞砌体结构试验研究[J].河南科学,2002,20(6):693—696.
[20]卢会芳.碳纤维布加固带洞口砌体墙试验研究[D].武汉:武汉理工大学,2003.
[21]张祥顺,吴辉琴,彭少民.CFRP对无构造柱墙体抗震加固试验研究[J].华中科技大学学报(城市科学版),2002,19(3):13—16.
[22]张祥顺,谷倩,彭少民.CFRP对砖墙抗震加固对比试验研究与计算分析[J].世界地震工程,2003,19(1):77—82.
[23]张祥顺,谷倩,管克俭,等.碳纤维布加固砌体结构试验研究[J].武汉理工大学学报,2002,24(11):29—32.
[24]Michael L A,Alaa E E,Cheng J T.Strengthening of Unreinforced Masonry Walls Using FRPs[J].Journal ofComposites for Construction,2001,5(2):76—84.
[25]飞渭,江世永,彭飞飞.预应力碳纤维布加固混凝土受弯构件试验研究[J].四川建筑科学研究,2003,29(2):56—60.
[26]尚守平,彭晖.预应力碳纤维布材加固混凝土受弯构件的抗弯性能研究[J].建筑结构学报,2003,24(5):24—30.
[27]叶列平,庄江波,曾攀,等.预应力碳纤维布加固钢筋混凝土T形梁的试验研究[J].工业建筑,2005,35(8):7—12.
[28]Wight R G,Green M F.Prestressed FRP Sheets for Poststrengthening Reinforced Concrete Beams[J].Journal ofComposites for Construction.2001,5(4):214—220.
[29]Piyong Y,Silva P F.Flexural Strengthening of Concrete Slabs by a Three-Stage Prestressing FRP System Enhancedwith the Presence of GFRP Anchor Spikes[A].Proceedings of CCC 2003—Composites in Construction InternationalConference[C].Italy:University of Calabria,2003:203—208.
[30]Wight R G,Hacha R E.Prestressed CFRP Sheet for Strengthening Reinforced Concrete Structures in Fatigue[A].Proceedings of the 6th International Symposium on FRP Reinforcement for Concrete Structures[C].Singapore:World Scientific Press,2003:895—904.
[31]Triantafillou,Deskovic.Innovative Prestressing with FRP Sheets:Mechanics of Short-Term Behavior[J].Journal ofEngineering Mechanics,1991,117(7):1652—1672.
[32]Garden H N,Hollaway.An Experimental Study of the Strengthening of Reinforced Concrete Beams Using Pres-tressed Carbon Composite Plates[A].Proceeding of the 7th International Conference on Extending the Life of Bridge[C].Edinburgh:Press of University of Edingurgh,1997:191—199.
[33]Deuring M.Post-Strengthening of Concrete Structures with Pretensioned Advanced Composites[Z].EMPA ReportNo 224,1993.
[34]Merier U.Strengthening of Structures Using Carbon Fiber Composites[J].Construction and Building Materials,1995,9(9):191—199.
[35]牛赫东,吴智深.预应力FRP纤维布粘结补强技术中的界面剪切应力传递[A].第二界全国土木工程纤维增强材料(FRP)应用技术学术交流会论文集[C].北京:清华大学出版社,2002:74—85.
[36]Hacha E,Green M F.Prestressed Fiber-Reinforced Polymer Laminates for Strengthening Structures[J].Progressin Structural Engineering and Materials,2001,3(2):111—121.
[37]吴涛.预应力CFRP加固钢梁抗弯性能研究[D].武汉:武汉大学,2005.
[38]卢亦焱.一种加固混凝土受压构件的方法[P].中国专利:ZL01133612.9,2003.
[39]卢亦焱,史健勇,赵国藩.碳纤维布和角钢复合加固轴心受压混凝土柱的试验研究[J].建筑结构学报,2003,24(5):18—23.
[40]史健勇.碳纤维布加固混凝土梁柱承载力研究[D].武汉:武汉大学,2001.
[41]欧添雁.外包角钢与碳纤维布复合加固钢筋混凝土中长柱试验研究[D].武汉:武汉大学,2004.
[42]童光兵.外包钢和碳纤维布复合加固钢筋混凝土偏压柱研究[D].武汉:武汉大学,2004.
[43]张华.碳纤维布和角钢复合加固钢筋混凝土柱抗剪性能研究[D].武汉:武汉大学,2005.
[44]陈少雄.外包钢与碳纤维布复合加固钢筋混凝土柱抗震性能研究[D].武汉:武汉大学,2004.
[45]周婷.,碳纤维布与钢板复合加固钢筋混凝土梁抗弯性能研究[D].武汉:武汉大学,2004.
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