CFRP约束预压混凝土棱柱的轴压试验研究
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摘要
通过42个混凝土棱柱体的轴压试验,研究了混凝土、CFRP约束混凝土和CFRP约束预压混凝土3种情况的棱柱体试件在轴压力作用下的应力-应变关系,与此同时还得出了混凝土方柱在预压后用CFRP加固再受荷时,试件的峰值应力随预加轴压比的增加的变化规律,并给出了考虑预加轴压比影响的峰值应力的计算公式,为在役混凝土结构构件的加固设计提供试验依据。
Through the uniaxial compression experiments of 42 concrete prisms,the stress-strain relationships of concrete specimens,CFRP confined concrete specimens and precompressed CFRP confined concrete specimens are studied.But for this,the varying rule of peak stress is obtained with the increasing of the preloaded axial compression ratio,while CFRP confined precompressed concrete prisms are reloaded.The tested results provide a basis for reinforcing design of concrete structural members in-service.
Through the uniaxial compression experiments of 42 concrete prisms,the stress-strain relationships of concrete specimens,CFRP confined concrete specimens and precompressed CFRP confined concrete specimens are studied.But for this,the varying rule of peak stress is obtained with the increasing of the preloaded axial compression ratio,while CFRP confined precompressed concrete prisms are reloaded.The tested results provide a basis for reinforcing design of concrete structural members in-service.
引文
[1]黄南翼,张锡云,姜萝香.日本阪神大地震建筑震害分析与加固技术[M].北京:地震出版社,2000.Huang Nanyi,Zhang Xiyun,Jiang Luoxiang.Damage Analysis and Strengthen Technique of Japan Great Hanshin-Awaji Earthquake[M].Beijing:Earthquake Press,2000.
[2]Keller T.Towards structural forms for composite fiber materials[J].Structural Engineering International,1996,9(4):232-241.
[3]曹双寅,邱洪兴.结构可靠性鉴定与加固技术[M].武汉:中国水利水电出版社,2001.Cao Shuangyin,Qiu Hongxing.Reliability Appraisement of Structure and Strengthen Technique[M].Wuhan:China Water Power Press,2001.
[4]叶列平,谭壮.纤维增强塑料混凝土在土木工程中的应用综述[C]//北京:中国纤维增强塑料(CFRP)混凝土结构学术交流会,2000.Ye Lieping,Tan Zhuang.Usage overview of CFRP concrete in civil engineering[C]//Beijing:China CFRP Concrete Structure Academic Exchan-ges,2000.
[5]Lam L and Teng J G.Stress-strain model for FRP-confined concrete for design applications[C]//Proc.,6th Int.Symp.on Fibre-Reinforced Polymer(FRP)Reinforcement for Concrete Structures,K.H.Tan,ed.World Scientific,Singapore,2001:99-110.
[6]CECS146-2003,碳纤维片材加固修复混凝土结构技术规程[S].CECS146-2003,Technical Specification for Strengthening Concrete Structures with Carb on Fiber Reinforced Polymer Laninate[S].
[7]GB/T50081-2002,普通混凝土力学性能试验方法标准[S].GB/T50081-2002,Standard for Test Method of Mechanical Properties on Ordinary Concrete[S].
[2]Keller T.Towards structural forms for composite fiber materials[J].Structural Engineering International,1996,9(4):232-241.
[3]曹双寅,邱洪兴.结构可靠性鉴定与加固技术[M].武汉:中国水利水电出版社,2001.Cao Shuangyin,Qiu Hongxing.Reliability Appraisement of Structure and Strengthen Technique[M].Wuhan:China Water Power Press,2001.
[4]叶列平,谭壮.纤维增强塑料混凝土在土木工程中的应用综述[C]//北京:中国纤维增强塑料(CFRP)混凝土结构学术交流会,2000.Ye Lieping,Tan Zhuang.Usage overview of CFRP concrete in civil engineering[C]//Beijing:China CFRP Concrete Structure Academic Exchan-ges,2000.
[5]Lam L and Teng J G.Stress-strain model for FRP-confined concrete for design applications[C]//Proc.,6th Int.Symp.on Fibre-Reinforced Polymer(FRP)Reinforcement for Concrete Structures,K.H.Tan,ed.World Scientific,Singapore,2001:99-110.
[6]CECS146-2003,碳纤维片材加固修复混凝土结构技术规程[S].CECS146-2003,Technical Specification for Strengthening Concrete Structures with Carb on Fiber Reinforced Polymer Laninate[S].
[7]GB/T50081-2002,普通混凝土力学性能试验方法标准[S].GB/T50081-2002,Standard for Test Method of Mechanical Properties on Ordinary Concrete[S].
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