碳纤维增强复材环向围束加固柱受低速冲击剩余承载力研究
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摘要
外贴纤维增强复合材料(CFRP)环向围束钢筋混凝土柱受低速撞击时,因各向异性材性而易发生冲击损伤。基于显式有限元分析获得的不同低速冲击工况下CFRP环向围束加固柱的损伤结果,通过显式-隐式连续求解,建立了具有低速冲击损伤特征的CFRP环向围束加固柱的非线性隐式有限元分析模型,对包括冲击初始动能、CFRP厚度和撞击物形状在内的多种因素对加固柱的剩余受压承载力的影响效果进行了系统性的量化分析。
Externally bonded carbon fiber reinforced polymer( CFRP) wraps,which are used to increase the axial compression strengths of reinforced concrete columns by providing confinement,are susceptible to the low-velocity impacts and may suffer severe damages. Based on the impact damages of column specimens under various scenarios,obtained from the explicit finite element( FE) analysis,an implicit nonlinear FE analysis model was used to investigate the axial compressive behavior of the impacted CFRP continued columns with an explicit to implicit sequential solution procedure. The roles of different influencing factors,such as initial kinetic energy,the thickness of CFRP,and the shape of impactor,were analyzed quantitatively.
Externally bonded carbon fiber reinforced polymer( CFRP) wraps,which are used to increase the axial compression strengths of reinforced concrete columns by providing confinement,are susceptible to the low-velocity impacts and may suffer severe damages. Based on the impact damages of column specimens under various scenarios,obtained from the explicit finite element( FE) analysis,an implicit nonlinear FE analysis model was used to investigate the axial compressive behavior of the impacted CFRP continued columns with an explicit to implicit sequential solution procedure. The roles of different influencing factors,such as initial kinetic energy,the thickness of CFRP,and the shape of impactor,were analyzed quantitatively.
引文
[1]中华人民共和国住房和城乡建设部.混凝土结构加固设计规范:GB 50367—2013[S].北京:中国建筑工业出版社,2014.
[2]中华人民共和国住房和城乡建设部.纤维增强复合材料建设工程应用技术规范:GB 50608—2010[S].北京:中国计划出版社,2011.
[3] ACI. Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures:ACI 440.2R-17[S]. Farmington Hills:American Concrete Institute,2017.
[4] PHAM T M,HAO H. Review of Concrete Structures Strengthened with FRP Against Impact Loading[J]. Structures,2016(7):59-70.
[5] KASAN J L,HARRIES K A,MILLER R,et al. Limits of Application of Externally Bonded CFRP Repairs for ImpactDamaged Prestressed Concrete Girders[J]. Journal of Composites for Construction,2014,18(3). doi:10.1061/(ASCE)CC.1943-5614.0000347
[6] ALI A A, ABD-ELMOATY M A, MOHAMED H. Effect of Internal Short Fibers,Steel Reinforcement,and Surface Layer on Impact and Penetration Resistance of Concrete[J]. Alexandria Engineering Journal,2013,52(3):407-417.
[7] KIRBY J E,ORTON S L. Residual Strength of Impact-Damaged CFRP Used to Strengthen Concrete Structures[J]. Journal of Composites for Construction,2011,15(5):782-789.
[8]王步,张诺亚,黄小霞,等.碳纤维增强复材环向围束加固柱受低速冲击损伤[J].工业建筑,2019,45(5):177-183.
[9] PARVIN A,BRIGHTON D. FRP Composites Strengthening of Concrete Columns Under Various Loading Conditions[J].Polymers,2014,6(4):1040-1056.
[10] SHARMA H,HURLEBAUS S,GARDONI P. Performance-Based Response Evaluation of Reinforced Concrete Columns Subject to Vehicle Impact[J]. International Journal of Impact Engineering,2012,43:385-401.
[11] HOLMQUIST T J,JOHNSON G R,COOK W H. A Computational Constitutive Model for Concrete Subjective to Large Strains,High Strain Rates, High Pressures[C]∥Fourteen International Symposium on Ballistics. Quebec. Canada:1993:591-600.
[12] CHANG F K,CHANG K Y. A Progressive Damage Model for Laminated Composites Containing Stress Concentration[J].Journal of Composite Materials,1987,21(9):834-855.
[13] KRIEG R D,KEY S W. Implementation of a Time Dependent Plasticity Theory into Structural Computer Programs,Vol. 20 of Constitutive Equations in Viscoplasticity:Computational and Engineering Aspects[M]. New York:American Society of Mechanical Engineers,1976.
[14] HOGNESTAD E,HANSON N W,MCHENRY D. Concrete Stress Distribution in Ultimate Strength Design[J]. Journal of the American Concrete Institute,1955,52(12):455-480.
[15]中华人民共和国住房和城乡建设部.混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2015.
[16] WILLIAM K,WARNKE E P. Constitutive Model for the Triaxial Behavior of Concrete[C]∥Colloquium on Concrete Structures Subjected to Triaxial Stresses:Proceedings of International Association for Bridge and Structural Engineering(IABSE)ISMES,Bergamo,Italy:1975,19:1-30.
[17] YOUNES R,HALLAL A,FARDOUN F,et al. Comparative Review Study on Elastic Properties Modeling for Unidirectional Composite Materials. Composites and Their Properties[M]. N.Hu,ed.,InTech,Rijeka,Croatia,Chapter,2012,17:391-408.
[2]中华人民共和国住房和城乡建设部.纤维增强复合材料建设工程应用技术规范:GB 50608—2010[S].北京:中国计划出版社,2011.
[3] ACI. Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures:ACI 440.2R-17[S]. Farmington Hills:American Concrete Institute,2017.
[4] PHAM T M,HAO H. Review of Concrete Structures Strengthened with FRP Against Impact Loading[J]. Structures,2016(7):59-70.
[5] KASAN J L,HARRIES K A,MILLER R,et al. Limits of Application of Externally Bonded CFRP Repairs for ImpactDamaged Prestressed Concrete Girders[J]. Journal of Composites for Construction,2014,18(3). doi:10.1061/(ASCE)CC.1943-5614.0000347
[6] ALI A A, ABD-ELMOATY M A, MOHAMED H. Effect of Internal Short Fibers,Steel Reinforcement,and Surface Layer on Impact and Penetration Resistance of Concrete[J]. Alexandria Engineering Journal,2013,52(3):407-417.
[7] KIRBY J E,ORTON S L. Residual Strength of Impact-Damaged CFRP Used to Strengthen Concrete Structures[J]. Journal of Composites for Construction,2011,15(5):782-789.
[8]王步,张诺亚,黄小霞,等.碳纤维增强复材环向围束加固柱受低速冲击损伤[J].工业建筑,2019,45(5):177-183.
[9] PARVIN A,BRIGHTON D. FRP Composites Strengthening of Concrete Columns Under Various Loading Conditions[J].Polymers,2014,6(4):1040-1056.
[10] SHARMA H,HURLEBAUS S,GARDONI P. Performance-Based Response Evaluation of Reinforced Concrete Columns Subject to Vehicle Impact[J]. International Journal of Impact Engineering,2012,43:385-401.
[11] HOLMQUIST T J,JOHNSON G R,COOK W H. A Computational Constitutive Model for Concrete Subjective to Large Strains,High Strain Rates, High Pressures[C]∥Fourteen International Symposium on Ballistics. Quebec. Canada:1993:591-600.
[12] CHANG F K,CHANG K Y. A Progressive Damage Model for Laminated Composites Containing Stress Concentration[J].Journal of Composite Materials,1987,21(9):834-855.
[13] KRIEG R D,KEY S W. Implementation of a Time Dependent Plasticity Theory into Structural Computer Programs,Vol. 20 of Constitutive Equations in Viscoplasticity:Computational and Engineering Aspects[M]. New York:American Society of Mechanical Engineers,1976.
[14] HOGNESTAD E,HANSON N W,MCHENRY D. Concrete Stress Distribution in Ultimate Strength Design[J]. Journal of the American Concrete Institute,1955,52(12):455-480.
[15]中华人民共和国住房和城乡建设部.混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2015.
[16] WILLIAM K,WARNKE E P. Constitutive Model for the Triaxial Behavior of Concrete[C]∥Colloquium on Concrete Structures Subjected to Triaxial Stresses:Proceedings of International Association for Bridge and Structural Engineering(IABSE)ISMES,Bergamo,Italy:1975,19:1-30.
[17] YOUNES R,HALLAL A,FARDOUN F,et al. Comparative Review Study on Elastic Properties Modeling for Unidirectional Composite Materials. Composites and Their Properties[M]. N.Hu,ed.,InTech,Rijeka,Croatia,Chapter,2012,17:391-408.