FRP约束混凝土柱的增强、增韧性能研究
摘要
FRP(Fiber Reinforced Plastics)在旧结构加固中以提高结构承载力——“增强”为目的的试验、应用已经广泛开展,对于FRP约束混凝土结构作为新建结构增强、增韧作用的研究处于初期研究阶段。初期研究表明采用FRP约束钢筋混凝土柱,能够最大限度地发挥混凝土、钢筋和FRP的力学性能,大大地提高约束混凝土结构的承载力和改善其延性性能。为了更好地研究混凝土材料本身受FRP约束后的性能,本文进行FRP约束素混凝土柱在单调轴心受压作用下的试验研究。
试验从改善结构延性的角度系统地研究了不同的FRP类型,不同截面形式的柱、不同的包裹方式和包裹层厚的FRP约束混凝土柱的力学性能,得到了FRP约束混凝土柱的受力规律,并采用有限元软件验证约束混凝土的增强增韧机理的,为FRP约束混凝土柱的新结构设计提供了目标和方法。同时,为了考察结构(或构件)在经过一次或多次如地震等随机或有规律地加卸作用后的使用性能,本文还对二次加载后的承载和延性性能进行了初步研究,研究表明FRP约束混凝土柱构件的强度、刚度没有降低,延性随着混凝土不可恢复塑性变形的产生,有所降低,但整个构件还能够满足设计要求。
For the purpose of enhancing the old structure capacity, the experiments and applications of FRP used to enhance capacity have been carried out extensively. While the research of FRP used to enhance reinforcement and ductility of new concrete structure is in the early stage. Early study shows that FRP confined concrete columns as the new structure can play mechanical properties of concrete, steel and FRP to the maximum, and greatly improve capacity of the binding concrete structure and its ductility. In order to study properties of concrete material itself confined by the FRP, the experimental research of FRP confined concrete columns under monotonously axial compression was carried out in the paper.
From the perspective of improving the structure ductility, the experiment systematically studied the mechanical performance of FRP confined columns with different types of FRP, sections, warpping method and layers, got the mechanical law of FRP confined columns, verified the enhancing mechanism of FRP confined columns in capacity and ductility by using FEM software and offered the design objectives and methods of the new structure of FRP confined column. Meanwhile, to inspect the service performance of structure (or elements) under one or more such as earthquakes and other random or regularly loading-and-unloading force, the capacity and ductility performance of FRP confined concrete columns under secondary loading were also preliminarily studied. The study shows strength and stiffness of FRP confined concrete columns are not reduced, the ductility has been reduced with the un-recoverable concrete plastic deformation, but the entire component still meets the design requirements.
试验从改善结构延性的角度系统地研究了不同的FRP类型,不同截面形式的柱、不同的包裹方式和包裹层厚的FRP约束混凝土柱的力学性能,得到了FRP约束混凝土柱的受力规律,并采用有限元软件验证约束混凝土的增强增韧机理的,为FRP约束混凝土柱的新结构设计提供了目标和方法。同时,为了考察结构(或构件)在经过一次或多次如地震等随机或有规律地加卸作用后的使用性能,本文还对二次加载后的承载和延性性能进行了初步研究,研究表明FRP约束混凝土柱构件的强度、刚度没有降低,延性随着混凝土不可恢复塑性变形的产生,有所降低,但整个构件还能够满足设计要求。
For the purpose of enhancing the old structure capacity, the experiments and applications of FRP used to enhance capacity have been carried out extensively. While the research of FRP used to enhance reinforcement and ductility of new concrete structure is in the early stage. Early study shows that FRP confined concrete columns as the new structure can play mechanical properties of concrete, steel and FRP to the maximum, and greatly improve capacity of the binding concrete structure and its ductility. In order to study properties of concrete material itself confined by the FRP, the experimental research of FRP confined concrete columns under monotonously axial compression was carried out in the paper.
From the perspective of improving the structure ductility, the experiment systematically studied the mechanical performance of FRP confined columns with different types of FRP, sections, warpping method and layers, got the mechanical law of FRP confined columns, verified the enhancing mechanism of FRP confined columns in capacity and ductility by using FEM software and offered the design objectives and methods of the new structure of FRP confined column. Meanwhile, to inspect the service performance of structure (or elements) under one or more such as earthquakes and other random or regularly loading-and-unloading force, the capacity and ductility performance of FRP confined concrete columns under secondary loading were also preliminarily studied. The study shows strength and stiffness of FRP confined concrete columns are not reduced, the ductility has been reduced with the un-recoverable concrete plastic deformation, but the entire component still meets the design requirements.
引文
[1]赵彤、谢剑·碳纤维布补强加固混凝土结构新技术[M]·天津大学出版社·2001年
[2]朱张校·工程材料·清华大学出版社[M]·2001年
[3]W.Jansze · Strengthening of Reinforced Concrete Members in Bending by Externally Bonded Steel Plates[M]· Delft University Press · 1997
[4]Stephen Kurtz and P.Balaguru · Comparison of Inorganic and Organic Matrices for Strengthening of RC Beams With Carbon Sheets[J]· Journal of Structural Engineering · January 2001
[5]贺曼罗·建筑结构胶粘剂的发展与应用[A]·重庆市2002年结构加固会议论文·2002
[6]王荣国等·复合材料概论·哈尔滨工业大学出版社·2002.3
[7]张锡祥,顾安邦·复合材料用于大跨斜拉桥发展展望·重庆交通学院学报·1995·Vol.14
[8]杨允表,石洞·复合材料在桥梁工程中的应用·桥梁建筑·1997(4)
[9]冯鹏,叶列平·FRP结构和FRP组合结构在结构工程中的应用与发展·2002全国FRP会议
[10]Meier U.,Deuring M.,Meier H.,Schwegler G.· CFRP bonded sheets.A.Narmi(Ed.),Fiber-Reinforced-Plastic(FRP)Reinforcement for Concrete Structures · Properties and Applications Elsevier Science · 1993
[11]ACI,ACI440.2R-02 · Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures.American Concrete Institute · 2002
[12]Canada ISIS.· Strengthening reinforced concrete structures with externally-bonded fiber reinforced polymers · Design Manual No.4.· 227 Engineering Building,University of Manitoba,Winnipeg,Manitoba,R3T 5V6 · 2001 · 33-38.
[13]FIB · Externally bonded FRP reinforcement for RC structures · in:Bulletin 14 · 2001 · 43-45
[14]JSCE · Recommendations for upgrading of concrete structures with use of continuous fiber sheets · 2000 · 30-34
[15]Committee Concrete Society.Design guidance for strengthening concrete structures using fiber composite materials.Technical Report No.55 · Century House · Telford Avenue,Crowthorne,Berkshire RG45 6YS,UK · 2000 · 40-42
[16]陆新征·FRP-混凝土界面行为研究·清华大学博士论文·2004
[17]碳纤维片材加固混凝土结构技术规程·北京·中国计划出版社·2003
[18]Malek,A.M.,Saadatmanesh,H.and Ehsani,M.R.· Prediction of failure load of R/C beams strengthened with FRP plate due to stress concentration at the plate end·ACI Structural Journal · Vol.95,No.1 · 1998
[19]Varastehpour,H.and Hamelin,P..Strengthening of concrete using fiber- reinforced plastics · Materials and Structures · Vol.30 · 1997
[20]Mukhopadhyaya,P.and Swamy,N.· Interface shear stress:a new design criterion for plate debonding,Journal of Composites for Construction · ASCE · Vol.5,No.1 · 2001
[21]Sharif A.,Al-Sulaimani G.J.,Basunbul,I.A.,Baluch,M.H.and Ghaleb,B.N.· strengthening of initially loaded reinforced concrete beams using FRP plates · ACI Strctural Journal · Vol.91 No.2 · 1994.
[22]王文华等·钢筋混凝土结构增强纤维加固技术·河南理工大学学报·2005.5
[23]张巨松,曾龙,王振兴·FRP作为混凝土工程永久性模板的试验研究·玻璃钢/复合材料·2000(5)
[24]陆新征,叶列平,滕锦光,庄江波,江见鲸·FRP片材与混凝土粘结性能的精细有限元分析·工程力学·2005
[25]陆新征,叶列平,滕锦光,庄江波·FRP-混凝土界面粘结滑移本构模型·建筑结构学报·2005.8
[26]Richart F.E · The structural Effectiveness of Protective on Reinforced Concrete Column · ACI Journal · Vol.18,No.4 · 1946 · 353-363
[27]Fardis M.N.and Khalili H.· Concrete Encases in Glass Fiber Reinforced Plastic · ACI Journal Proceedings · Vol.78 · No.6.Nov-Dec · 1981 · 440-446
[28]Fardis M.N.,Khalili H.· FRP Encased Concrete As a Structural Material · Magazine of Concrete Journal · 1982,34(121)· 191 - 202
[29]Mander J.B.,Pfiestley M.N.,Park R·Theoretical Stress Swain Model for Confined Concrete · ASCE · Journal of Structural Engineering · 1988,114(8)· 1804-1 826
[30]Katsumata J.and Takeda M.R · Model of Concrete Confined by Fiber Composites · Journal of Structural Enginerering · 1998,124(9)· 143-156.
[31]Toutanji H·Stress SWain Characteristics of Concrete Columns Externally Confined with Advanced Fiber Composite Sheets · ACI · Materials Journal · 1999 · 96(3):397 - 404
[32]Ehsani M.R · Strength of Concrete Columns Externally Reinforced with Fiber Straps ·Structral Journal · Vol.91,No.3 · Apr.-May.1995 · 500-509
[33]Demers R.,Seible F.,and Hegemier G.H.· Strength of FRP Encased Concrete · Advanced ComFosites Technology Transfer Consortium,Report No.AC1T - 95 / 01,University of California,San Diego.La Jolla,California,January.
[34]Samaan M.,Mirmiran A.,Shahawy M..Model of Concrete Confined by Fiber Composites.ASCE,Journal of Structural Engineering,1998,126(9):1025-1031.
[35]赵彤,谢剑,戴自强·碳纤维布约束混凝土应力-应变全曲线的试验研究建筑结构·2000.7·第30卷,第7期·40-43
[36]陆新征,冯鹏,叶列平·FRP布约束混凝土方柱轴心受压性能的有限元分析·土木工程学报·2003·第36卷,第2期·46-51
[37]贾明英,程华·不同FRP约束混凝土圆柱轴心受压性能试验研究·工业建筑·2002,第32卷,第5期·65-67
[38]王苏岩,韩克双,曲秀华·CFRP加固高强混凝土柱改善延性的试验研究·世界地震工程·2005年9月
[39]潘景龙,王威,金熙男,王陈远·偏心荷载作用下FRP约束钢筋混凝土短柱的特性研究·土木工程学报·2005.2
[40]于清·轴心受压FRP约束混凝土的应力一应变关系研·究工业建筑·2001·第31卷,第4期,5-8
[41]张月弦,薛元德·FRP约束混凝土的基本力学性能·玻璃钢/复合材料·1999·第6期,21-27
[42]杨庆国·基于断裂力学原理的一种复合钢筋混凝土新结构·重庆交通学院硕士论文·2002
[43]吕奖国·钢筋混凝土结构的裂纹控制思想与结构设计新方法·重庆交通大学硕士论文·2006
[44]易志坚等·基于断裂力学原理的钢筋混凝土复合新结构设计理论研究·国家自然科学基金项目·2006
[45]Saadatmanesh H.and Malek A.M.· Design guidelines for flexural strengthening of RC beams with FRP plates · Journal of Composites for Construction · ASCE,Vol.2,No.4 · 1998.
[46]Nanni,Antonio,and Bradford.Nick M.· FRP jacked concrete under uniaxial compression.Construction and Building Materials · 1995 · Vol.9,Not.· 115-124
[47]周克荣、顾祥林、苏小卒·混凝土结构设计·同济大学出版社·2001年3月
[48]吴家龙·弹性力学·同济大学出版社·199年3月
[49]过镇海·混凝土的强度和变形、实验基础和本构关系·清华大学出版社·1997年
[50]韩林海·钢管混凝土结构·科学出版社·2000年
[51]王传志、腾智明·钢筋混凝土结构理论·中国建筑工业出版社·1985年
[52]腾智明·钢筋混凝土基本构件·清华大学出版社·1999年11月
[53]过镇海,钢筋混凝土原理·清华大学出版社·1999年3月
[54]中华人民共和国国家标准.混凝土结构试验方法标准(GB50152-92)·北京·中国建筑工业出版社·1992
[55]徐绩青·延性系数确定方法的探讨·水运工程·2004,368(9)·14-17
[56]姚振纲,刘祖华·建筑结构试验·同济大学出版社·1996.9
[57]马永欣,郑山锁·结构试验·科学出版社·2001.8
[2]朱张校·工程材料·清华大学出版社[M]·2001年
[3]W.Jansze · Strengthening of Reinforced Concrete Members in Bending by Externally Bonded Steel Plates[M]· Delft University Press · 1997
[4]Stephen Kurtz and P.Balaguru · Comparison of Inorganic and Organic Matrices for Strengthening of RC Beams With Carbon Sheets[J]· Journal of Structural Engineering · January 2001
[5]贺曼罗·建筑结构胶粘剂的发展与应用[A]·重庆市2002年结构加固会议论文·2002
[6]王荣国等·复合材料概论·哈尔滨工业大学出版社·2002.3
[7]张锡祥,顾安邦·复合材料用于大跨斜拉桥发展展望·重庆交通学院学报·1995·Vol.14
[8]杨允表,石洞·复合材料在桥梁工程中的应用·桥梁建筑·1997(4)
[9]冯鹏,叶列平·FRP结构和FRP组合结构在结构工程中的应用与发展·2002全国FRP会议
[10]Meier U.,Deuring M.,Meier H.,Schwegler G.· CFRP bonded sheets.A.Narmi(Ed.),Fiber-Reinforced-Plastic(FRP)Reinforcement for Concrete Structures · Properties and Applications Elsevier Science · 1993
[11]ACI,ACI440.2R-02 · Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures.American Concrete Institute · 2002
[12]Canada ISIS.· Strengthening reinforced concrete structures with externally-bonded fiber reinforced polymers · Design Manual No.4.· 227 Engineering Building,University of Manitoba,Winnipeg,Manitoba,R3T 5V6 · 2001 · 33-38.
[13]FIB · Externally bonded FRP reinforcement for RC structures · in:Bulletin 14 · 2001 · 43-45
[14]JSCE · Recommendations for upgrading of concrete structures with use of continuous fiber sheets · 2000 · 30-34
[15]Committee Concrete Society.Design guidance for strengthening concrete structures using fiber composite materials.Technical Report No.55 · Century House · Telford Avenue,Crowthorne,Berkshire RG45 6YS,UK · 2000 · 40-42
[16]陆新征·FRP-混凝土界面行为研究·清华大学博士论文·2004
[17]碳纤维片材加固混凝土结构技术规程·北京·中国计划出版社·2003
[18]Malek,A.M.,Saadatmanesh,H.and Ehsani,M.R.· Prediction of failure load of R/C beams strengthened with FRP plate due to stress concentration at the plate end·ACI Structural Journal · Vol.95,No.1 · 1998
[19]Varastehpour,H.and Hamelin,P..Strengthening of concrete using fiber- reinforced plastics · Materials and Structures · Vol.30 · 1997
[20]Mukhopadhyaya,P.and Swamy,N.· Interface shear stress:a new design criterion for plate debonding,Journal of Composites for Construction · ASCE · Vol.5,No.1 · 2001
[21]Sharif A.,Al-Sulaimani G.J.,Basunbul,I.A.,Baluch,M.H.and Ghaleb,B.N.· strengthening of initially loaded reinforced concrete beams using FRP plates · ACI Strctural Journal · Vol.91 No.2 · 1994.
[22]王文华等·钢筋混凝土结构增强纤维加固技术·河南理工大学学报·2005.5
[23]张巨松,曾龙,王振兴·FRP作为混凝土工程永久性模板的试验研究·玻璃钢/复合材料·2000(5)
[24]陆新征,叶列平,滕锦光,庄江波,江见鲸·FRP片材与混凝土粘结性能的精细有限元分析·工程力学·2005
[25]陆新征,叶列平,滕锦光,庄江波·FRP-混凝土界面粘结滑移本构模型·建筑结构学报·2005.8
[26]Richart F.E · The structural Effectiveness of Protective on Reinforced Concrete Column · ACI Journal · Vol.18,No.4 · 1946 · 353-363
[27]Fardis M.N.and Khalili H.· Concrete Encases in Glass Fiber Reinforced Plastic · ACI Journal Proceedings · Vol.78 · No.6.Nov-Dec · 1981 · 440-446
[28]Fardis M.N.,Khalili H.· FRP Encased Concrete As a Structural Material · Magazine of Concrete Journal · 1982,34(121)· 191 - 202
[29]Mander J.B.,Pfiestley M.N.,Park R·Theoretical Stress Swain Model for Confined Concrete · ASCE · Journal of Structural Engineering · 1988,114(8)· 1804-1 826
[30]Katsumata J.and Takeda M.R · Model of Concrete Confined by Fiber Composites · Journal of Structural Enginerering · 1998,124(9)· 143-156.
[31]Toutanji H·Stress SWain Characteristics of Concrete Columns Externally Confined with Advanced Fiber Composite Sheets · ACI · Materials Journal · 1999 · 96(3):397 - 404
[32]Ehsani M.R · Strength of Concrete Columns Externally Reinforced with Fiber Straps ·Structral Journal · Vol.91,No.3 · Apr.-May.1995 · 500-509
[33]Demers R.,Seible F.,and Hegemier G.H.· Strength of FRP Encased Concrete · Advanced ComFosites Technology Transfer Consortium,Report No.AC1T - 95 / 01,University of California,San Diego.La Jolla,California,January.
[34]Samaan M.,Mirmiran A.,Shahawy M..Model of Concrete Confined by Fiber Composites.ASCE,Journal of Structural Engineering,1998,126(9):1025-1031.
[35]赵彤,谢剑,戴自强·碳纤维布约束混凝土应力-应变全曲线的试验研究建筑结构·2000.7·第30卷,第7期·40-43
[36]陆新征,冯鹏,叶列平·FRP布约束混凝土方柱轴心受压性能的有限元分析·土木工程学报·2003·第36卷,第2期·46-51
[37]贾明英,程华·不同FRP约束混凝土圆柱轴心受压性能试验研究·工业建筑·2002,第32卷,第5期·65-67
[38]王苏岩,韩克双,曲秀华·CFRP加固高强混凝土柱改善延性的试验研究·世界地震工程·2005年9月
[39]潘景龙,王威,金熙男,王陈远·偏心荷载作用下FRP约束钢筋混凝土短柱的特性研究·土木工程学报·2005.2
[40]于清·轴心受压FRP约束混凝土的应力一应变关系研·究工业建筑·2001·第31卷,第4期,5-8
[41]张月弦,薛元德·FRP约束混凝土的基本力学性能·玻璃钢/复合材料·1999·第6期,21-27
[42]杨庆国·基于断裂力学原理的一种复合钢筋混凝土新结构·重庆交通学院硕士论文·2002
[43]吕奖国·钢筋混凝土结构的裂纹控制思想与结构设计新方法·重庆交通大学硕士论文·2006
[44]易志坚等·基于断裂力学原理的钢筋混凝土复合新结构设计理论研究·国家自然科学基金项目·2006
[45]Saadatmanesh H.and Malek A.M.· Design guidelines for flexural strengthening of RC beams with FRP plates · Journal of Composites for Construction · ASCE,Vol.2,No.4 · 1998.
[46]Nanni,Antonio,and Bradford.Nick M.· FRP jacked concrete under uniaxial compression.Construction and Building Materials · 1995 · Vol.9,Not.· 115-124
[47]周克荣、顾祥林、苏小卒·混凝土结构设计·同济大学出版社·2001年3月
[48]吴家龙·弹性力学·同济大学出版社·199年3月
[49]过镇海·混凝土的强度和变形、实验基础和本构关系·清华大学出版社·1997年
[50]韩林海·钢管混凝土结构·科学出版社·2000年
[51]王传志、腾智明·钢筋混凝土结构理论·中国建筑工业出版社·1985年
[52]腾智明·钢筋混凝土基本构件·清华大学出版社·1999年11月
[53]过镇海,钢筋混凝土原理·清华大学出版社·1999年3月
[54]中华人民共和国国家标准.混凝土结构试验方法标准(GB50152-92)·北京·中国建筑工业出版社·1992
[55]徐绩青·延性系数确定方法的探讨·水运工程·2004,368(9)·14-17
[56]姚振纲,刘祖华·建筑结构试验·同济大学出版社·1996.9
[57]马永欣,郑山锁·结构试验·科学出版社·2001.8