FRP约束混凝土柱理论模型Ⅱ:强度模型
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- 英文论文题名：Theoretical Model for Concrete Cylinders Confined with FRP Sheets Subjected to Axial Compression Ⅱ:Strength Model
- 论文作者：梁猛 ; 李春良 ; 倪晓雯 ; 李明飞 ; 王伟 ; 李明海
- 英文论文作者：Liang Meng ; Li Chunliang ; Ni Xiaowen ; Li Mingfei ; Wang Wei ; Li Minghai ; Harbin Institute of Technology ; Shandong Provincial Academy of Building Research ; Shandong Provincial Communications Planning and Design Institute
- 年：2016
- 作者机构：哈尔滨工业大学;山东省建筑科学研究院;山东省交通规划设计院;
- 论文关键词：FRP ; 混凝土圆柱 ; 理论模型 ; 强度模型
- 英文论文关键词：FRP ; concrete cylinder ; theoretical model ; compressive strength model
- 会议召开时间：2016-12-02
- 会议录名称：第十一届建筑物改造与病害处理学术研讨会、第六届工程质量学术会议论文集
- 语种：中文
- 分类号：TU37
- 学会代码：OGTY
- 会议名称：第十一届建筑物改造与病害处理学术研讨会、第六届工程质量学术会议
- 会议地点：中国海南海口
- 主办单位：中国老教授协会土木建筑专业委员会、中国土木工程学会工程质量分会、北京交通大学土木建筑工程学院
- 学会名称：中国土木工程学会
- 页数：5
- 文件大小：1108k
- 原文格式：O
- 会议级别：全国
摘要
首先讨论了FRP对混凝土圆柱的约束效率,得到柱环向FRP的实际拉断应变的统计值,以确定混凝土柱应力-应变关系的极限状态(即抗压强度f′_(ec)和极限应变ε_(ec)),然后采用FRP约束混凝土应力-应变关系分析模型对418个试验数据进行计算,得到f′_(ec)的计算值,最后将418个计算值代入设定方程形式的强度模型进行数据拟合,得到FRP约束混凝土柱的理论强度模型。通过与试验数据和现有模型的比较,本文模型能够对较大尺寸范围和不同约束水平的FRP约束混凝土圆柱的抗压强度做出较准确的预测。
In this paper,the strain efficiency of FRP confinement is investigated firstly for the purpose of determining the actual rupture strain,ε_(ce),of FRP jacket,from which the ultimate condition of stress-strain relationship of FRP-confined concrete,compressive strength f′_(ce) and ultimate strain ε_(ce),is determined.Afterwards,the calculated compressive strength f′_(ce) including 418 data is obtained via an analysis-oriented stress-strain model.Then the theoretical strength model of FRPconfined concrete cylinders is developed through regression of the above 418 calculated data substituting into the designate equation.In comparison with test data and existing models,the proposed strength model can provide accurate and satisfactory prediction.
In this paper,the strain efficiency of FRP confinement is investigated firstly for the purpose of determining the actual rupture strain,ε_(ce),of FRP jacket,from which the ultimate condition of stress-strain relationship of FRP-confined concrete,compressive strength f′_(ce) and ultimate strain ε_(ce),is determined.Afterwards,the calculated compressive strength f′_(ce) including 418 data is obtained via an analysis-oriented stress-strain model.Then the theoretical strength model of FRPconfined concrete cylinders is developed through regression of the above 418 calculated data substituting into the designate equation.In comparison with test data and existing models,the proposed strength model can provide accurate and satisfactory prediction.
引文
[1]KARBHARI V M,GAO Y Q.Composite Jacketed concrete under uniaxial compression-verification of simple design equations[J].Journal of Materials in Civil Engineering,ASCE,1997,9(4):185-193.
[2]LIN C T,LI Y F.An effective peak stress formula for concrete confined with carbon fiber reinforced plastics[J].Canadian Journal of Civil Engineering,2003,30(5):882-889.
[3]FRALDI M,NUNZIANTE L.CARANNANTE F,et al.Engineering Structure,2008,30(12):3247-3264.
[4]Girgin,Z.C.Modified failure criterion to predict ultimate strength of circular columns confined by different materials[J].ACI Structural Journal,2009,106(6):800-809.
[5]TOY F,ZHOU Y W.Unified strength model based on HoekBrown failure criterion for circular and square concrete columns confined by FRP[J].Journal of Composites for Construction,ASCE,2010,14(2):175-184.
[6]MIRMIRAN A.SHAHAWY M.Behavior of concrete columns confined by fiber composite[J].Journal of Structural Engineering,ASCE,1997,123(5):583-590.
[7]SHAHAWY M.MIRMIRAN A.BEITELMAN T.Tests and modeling of carbon-wrapped concrete columns[J].Composites,Part B:Engineering,2000,31(6-7):471480.
[8]HOEK E,BROWN E T.Empirical strength criterion for rock masses[J].Journal of Geotechnical Engineering Division,1980,106(GT9):1013-1035.
[9]梁猛,刘大帅,刘坤,等.FRP约束混凝土柱理论模型.Ⅰ:应力-应变关系分析模型[J].施工技术,2016(S1),已录用.
[10]LAM L,TENG J G.Ultimate condition of fiber reinforced polymercon?ned concrete[J].Journal of Composites for Construction,ASCE,2004,8(6):539-548.
[11]PESSIKI S,HARRIES K A,KESTNER J T,et al.Axial behavior of reinforced concrete columns confined with FRP jackets[J].Journal of Composites for Construction,ASCE,2001,5(4):237-245.
[12]MATTHYS S.TOUTANJI H,Taerwe L.Stress-strain behavior of large-scale circular columns con?ned with FRP composites[J].Journal of Structural Engineering,ASCE,2006,132(1):123-133.
[13]HARRIES K A,CAREY S A.Shape and"gap"effects on the behavior of variably confined concrete[J].Cement and Concrete Research,2003,33(6):881-890.
[14]REALFONZO R,NAPOLI A.Concrete con?ned by FRP systems;con?nement ef?ciency and design strength models[J].Composites Part B:Engineering,2011,42(4):736-755.
[15]LAM L,TENG J G.Design-oriented stress-strain model for FRPconfined concrete[J].Construction and Building Materials,2003,17(6-7):471-489.
[16]Berthet J F,Ferrier E,HAMELIN P.Compressive behavior of concrete externally confined by composite jackets.Part A:experimental study[J].Construction and Building Materials,2005,19(3):223-232.
[17]TOUTANJI H A.STRESS-strain characteristics of concrete columns externally confined with advanced fiber composite sheets[J].ACI Materials Journal,1999,96(3):397-404.
[18]YOUSSEF M N,FENG Q,MOSALLAM A S.Stress-strain model for concrete confined by FRP composites[J].Composites Part B:Engineering,2007,38:614-628.
[19]CAREY S A,HARRIES K A.Axial behavior and modeling of confined small-,medium-,and large-scale circular sections with carbon fiber-reinforced polymer jackets[J].ACI Structural Journal,2005,102(4):596-604.
[20]WU Y F,WANG L M.Unified strength model for square and circular concrete columns confined by external jacket[J].Journal of Structural Engineering,ASCE,2009,135(3):253-261.
[21]SAMAAN M,MIRMIRAN A,SHAHAWY M.Model of concrete confined fiber composite[J].Journal of Structural Engineering,ASCE,1998,124(9):1025-1031.
[22]XIAO Y,WU H.Compressive behavior of concrete confined by carbon fiber composite jackets[J].Journal of Materials in Civil Engineering,ASCE,2000,12(2):139-146.
[23]吴刚,吕志涛.FRP约束混凝土圆柱无软化段时的应力-应变关系研究[J].建筑结构学报,2003,24(5):1-9.
[24]FARDIS M N,KHALILI H H.FRP-encased concrete as a structural material[J].Magazine of Concrete Research,1982,34(121):191-202.
[25]Mirmiran A,Shahawy M.Behavior of concrete columns confined by fiber composite[J].Journal of Structural Engineering,ASCE,1997,123(5):583-590.
[26]FAHMY M F M,WU Z S.Evaluation and proposing models of circular concrete columns confined with different FRP composites[J].Composites Part B:Engineering,2010,41(3):199-213.
[27]ROUSAKIS T C,KARABINIS A I.Substandard reinforced concrete members subjected to compression:FRP confining effects[J].Material and Structures,2008,41(9):1595-1611.
[28]MIYAUCHI K,NISHBAYANSHI S,INOUE S.Estimation of strengthening effects with carbon?ber sheet for concrete column.Proceedings of International Symposium of FRPRCS-3,Sapporo,Japan,1997:217-224.
[29]SAAFI M.TOUTANJI HA,Li Z J.Behavior of concrete columns confined with fiber reinforced polymer tubes[J].ACI Materials Journal,1999,96(4):500-510.
[30]HARAJLI M H.Axial stress-strain relationship for FRP confined circular and rectangular concrete columns[J].Cement and Concrete Composites,2006,28(10):938-948.
[31]GIRGIN Z C,ARLOGLU N,ARLONGLU E.Evaluation of strength criteria for very-high-strength concretes under triaxial compression[J].ACI Structural Journal,2007,104(3):278-284.
[2]LIN C T,LI Y F.An effective peak stress formula for concrete confined with carbon fiber reinforced plastics[J].Canadian Journal of Civil Engineering,2003,30(5):882-889.
[3]FRALDI M,NUNZIANTE L.CARANNANTE F,et al.Engineering Structure,2008,30(12):3247-3264.
[4]Girgin,Z.C.Modified failure criterion to predict ultimate strength of circular columns confined by different materials[J].ACI Structural Journal,2009,106(6):800-809.
[5]TOY F,ZHOU Y W.Unified strength model based on HoekBrown failure criterion for circular and square concrete columns confined by FRP[J].Journal of Composites for Construction,ASCE,2010,14(2):175-184.
[6]MIRMIRAN A.SHAHAWY M.Behavior of concrete columns confined by fiber composite[J].Journal of Structural Engineering,ASCE,1997,123(5):583-590.
[7]SHAHAWY M.MIRMIRAN A.BEITELMAN T.Tests and modeling of carbon-wrapped concrete columns[J].Composites,Part B:Engineering,2000,31(6-7):471480.
[8]HOEK E,BROWN E T.Empirical strength criterion for rock masses[J].Journal of Geotechnical Engineering Division,1980,106(GT9):1013-1035.
[9]梁猛,刘大帅,刘坤,等.FRP约束混凝土柱理论模型.Ⅰ:应力-应变关系分析模型[J].施工技术,2016(S1),已录用.
[10]LAM L,TENG J G.Ultimate condition of fiber reinforced polymercon?ned concrete[J].Journal of Composites for Construction,ASCE,2004,8(6):539-548.
[11]PESSIKI S,HARRIES K A,KESTNER J T,et al.Axial behavior of reinforced concrete columns confined with FRP jackets[J].Journal of Composites for Construction,ASCE,2001,5(4):237-245.
[12]MATTHYS S.TOUTANJI H,Taerwe L.Stress-strain behavior of large-scale circular columns con?ned with FRP composites[J].Journal of Structural Engineering,ASCE,2006,132(1):123-133.
[13]HARRIES K A,CAREY S A.Shape and"gap"effects on the behavior of variably confined concrete[J].Cement and Concrete Research,2003,33(6):881-890.
[14]REALFONZO R,NAPOLI A.Concrete con?ned by FRP systems;con?nement ef?ciency and design strength models[J].Composites Part B:Engineering,2011,42(4):736-755.
[15]LAM L,TENG J G.Design-oriented stress-strain model for FRPconfined concrete[J].Construction and Building Materials,2003,17(6-7):471-489.
[16]Berthet J F,Ferrier E,HAMELIN P.Compressive behavior of concrete externally confined by composite jackets.Part A:experimental study[J].Construction and Building Materials,2005,19(3):223-232.
[17]TOUTANJI H A.STRESS-strain characteristics of concrete columns externally confined with advanced fiber composite sheets[J].ACI Materials Journal,1999,96(3):397-404.
[18]YOUSSEF M N,FENG Q,MOSALLAM A S.Stress-strain model for concrete confined by FRP composites[J].Composites Part B:Engineering,2007,38:614-628.
[19]CAREY S A,HARRIES K A.Axial behavior and modeling of confined small-,medium-,and large-scale circular sections with carbon fiber-reinforced polymer jackets[J].ACI Structural Journal,2005,102(4):596-604.
[20]WU Y F,WANG L M.Unified strength model for square and circular concrete columns confined by external jacket[J].Journal of Structural Engineering,ASCE,2009,135(3):253-261.
[21]SAMAAN M,MIRMIRAN A,SHAHAWY M.Model of concrete confined fiber composite[J].Journal of Structural Engineering,ASCE,1998,124(9):1025-1031.
[22]XIAO Y,WU H.Compressive behavior of concrete confined by carbon fiber composite jackets[J].Journal of Materials in Civil Engineering,ASCE,2000,12(2):139-146.
[23]吴刚,吕志涛.FRP约束混凝土圆柱无软化段时的应力-应变关系研究[J].建筑结构学报,2003,24(5):1-9.
[24]FARDIS M N,KHALILI H H.FRP-encased concrete as a structural material[J].Magazine of Concrete Research,1982,34(121):191-202.
[25]Mirmiran A,Shahawy M.Behavior of concrete columns confined by fiber composite[J].Journal of Structural Engineering,ASCE,1997,123(5):583-590.
[26]FAHMY M F M,WU Z S.Evaluation and proposing models of circular concrete columns confined with different FRP composites[J].Composites Part B:Engineering,2010,41(3):199-213.
[27]ROUSAKIS T C,KARABINIS A I.Substandard reinforced concrete members subjected to compression:FRP confining effects[J].Material and Structures,2008,41(9):1595-1611.
[28]MIYAUCHI K,NISHBAYANSHI S,INOUE S.Estimation of strengthening effects with carbon?ber sheet for concrete column.Proceedings of International Symposium of FRPRCS-3,Sapporo,Japan,1997:217-224.
[29]SAAFI M.TOUTANJI HA,Li Z J.Behavior of concrete columns confined with fiber reinforced polymer tubes[J].ACI Materials Journal,1999,96(4):500-510.
[30]HARAJLI M H.Axial stress-strain relationship for FRP confined circular and rectangular concrete columns[J].Cement and Concrete Composites,2006,28(10):938-948.
[31]GIRGIN Z C,ARLOGLU N,ARLONGLU E.Evaluation of strength criteria for very-high-strength concretes under triaxial compression[J].ACI Structural Journal,2007,104(3):278-284.
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