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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

23卷

期数:

2006年03期

页码:

26

栏目:

出版日期:

2006-09-20

文章信息/Info

Title:

Mechanics Performance of FRP Tendons Used in Engineering Structure

作者:

朱虹¹,钱洋^1,2

1. 东南大学 土木工程学院,江苏 南京 210096; 2. 东南大学 建筑设计研究院,江苏 南京 210096

Author(s):

ZHU Hong¹, QIAN Yang^1,2

1. School of Civil Engineering, Southeast University, Nanjing 210096, Jiangsu, China; 2. Institute of Architectural Design, Southeast University, Nanjing 210096, Jiangsu, China

关键词:

纤维增强塑料;  芳纶纤维增强塑料;  极限抗拉强度;  弹性模量;  松弛;  改性

Keywords:

FRP;  AFRP;  ultimate tensile strength;  elastic modulus;  relaxation;  modification

分类号:

TU532.3

DOI:

-

文献标志码:

A

摘要:

通过分析工程结构用纤维增强塑料(FRP)筋的组成和物理力学性能特点,对比FRP筋性能和钢筋性能的不同之处,指出了FRP筋在工程结构中的适用性和应用前景。通过试验研究,分析了局部弯折对芳纶纤维增强塑料(AFRP)筋极限抗拉强度、加载速率和加载历史对编织型芳纶纤维筋(FiBRA)型AFRP筋弹性模量,以及应力水平对FiBRA型AFRP筋松弛率的影响,建立了规格为FA11的FiBRA型AFRP筋的松弛率计算公式。结果表明,局部弯折可能导致FRP筋的极限抗拉强度下降,FiBRA型AFRP筋编织状的成型特征造成其弹性模量在张拉过程中是渐趋稳定的,并且造成其总松弛量较大,工程应用时需充分考虑这些因素。

Abstract:

Through analyzing the composition and physics mechanics performance characteristic of FRP tendons, the difference between FRP tendon and steel tendon was compared, the applicability and the future of FRP tendon in engineering structure were pointed out. Through experiments study, the effects of local bending to ultimate tensile strength, loading velocity rate and process to elastic modulus of FiBRA style AFRP tendons were analyzed, and stress levels to relaxation of FiBRA style FRP tendons were researched, and the formulas for calculating the relaxation rate of FA11, one spec of FiBRA tendon, were obtained. The results show that local bending may reduce the ultimate strength of FRP tendons, and the weave of FiBRA style AFRP tendon leads that the elastic modulus can only stabilize gradually and the total relaxation is more. These shortcomings should be noticed cautiously in practice.

参考文献/References:

[1] 朱 虹.新型FRP筋预应力混凝土结构的研究[D].南京:东南大学,2004. ZHU Hong.Study on Concrete Structure Prestressed with FRP Tendons[D].Nanjing:Southeast University,2004.
[2]钱 洋.预应力AFRP筋混凝土梁抗弯性能试验研究[D].南京:东南大学,2004. QIAN Yang.Experimental Study on Flexural Behavior of Concrete Beams Prestressed with AFRP Reinforcement[D].Nanjing:Southeast University,2004.
[3]MALVAR L J.Durability of Composites in Reinforced Concrete[C]//CDCC.CDCC98-First International Conference on Durability of Composites for Construction.Quebec:Sherbrooke,1998:1-12.
[4]吕志涛.新世纪混凝土结构对新材料的挑战[C]//岳清瑞.中国首届纤维增强塑料(FRP)混凝土结构学术交流会论文集.北京:科学出版社,2000:1-4. LU Zhi-tao.Challenge of Reinforcement Concrete Structure to New Materials in 21st Century[C]//YUE Qing-rui.Processing of the 1st National FRP Academic Exchanges Conference.Beijing:Science Press,2000:1-4.
[5]ATSHHIKO M.JSCE Recommendation for Design and Construction of Concrete Structures Using Continuous Fiber Reinforcing Materials[M].Tokyo:Research Committee on Continuous Fiber Reinforcing Materials,1997.
[6]ACI Committee 440,Guide for the Design and Construction of Concrete Reinforced with FRP Bars[S].
[7]吕志涛.高性能材料FRP应用与结构工程创新[J].建筑科学与工程学报,2005,22(1):1-5. LU Zhi-tao.Application of High Performance FRP and Innovations of Structure Engineering[J].Journal of Architecture and Civil Engineering,2005,22(1):1-5.
[8]贺拴海,任 伟.纤维增强塑料加固混凝土结构研究[J].建筑科学与工程学报,2005,22(3):20-24. HE Shuan-hai,REN Wei.Research on Reinforced Concrete with FRP[J].Journal of Architecture and Civil Engineering,2005,22(3):20-24.
[9]胡芳芳,刘伯权,王 步.FRP约束混凝土圆柱体轴心抗压强度研究[J].建筑科学与工程学报,2006,23(1):63-67. HU Fang-fang,LIU Bo-quan,WANG Bu.Study of Axial Compression for FRP Confined Concrete Circular Columns[J].Journal of Architecture and Civil Engineering,2006,23(1):63-67.
[10]楼梦麟,白建方.FRP加固梁模态分析的摄动解法[J].建筑科学与工程学报,2005,22(2):21-24. LOU Meng-lin,BAI Jian-fang.Perturbation Solution for Modal Characteristics of Beam Strengthened by FRP[J].Journal of Architecture and Civil Engineering,2005,22(2):21-24.
[11]于 清,韩林海,张 铮.长期荷载作用对FRP约束混凝土轴心受压构件力学性能的影响[J].中国公路学报,2003,16(3):58-63. YU Qing,HAN Lin-hai, ZHANG Zheng.Long-Term Effect in FRP-Confined Concrete Stub Columns Under Sustained Loading[J].China Journal of Highway and Transport,2003,16(3):58-63.
[12]朱 虹,吕志涛,张继文,等.AFRP筋松弛性能的试验研究[J].工业建筑,2006,36(7):62-64. ZHU Hong,LU Zhi-tao,ZHANG Ji-wen,et al.Experimental Study of Relaxation Performance of AFRP Tendons[J].Industry Construction,2006,36(7):62-64.

相似文献/References:

[1]胡芳芳,刘伯权,王步,等.FRP约束混凝土圆柱体轴心抗压强度研究[J].建筑科学与工程学报,2006,23(01):63.
　HU Fang-fang,LIU Bo-quan,WANG Bu.Study of Axial Compression for FRP Confined Concrete Circular Columns[J].Journal of Architecture and Civil Engineering,2006,23(03):63.
[2]贺拴海,任伟.纤维增强塑料加固混凝土结构研究[J].建筑科学与工程学报,2005,22(03):20.
　HE Shuan-hai,REN Wei.Research on reinforced concrete structure with FRP[J].Journal of Architecture and Civil Engineering,2005,22(03):20.

备注/Memo

备注/Memo:

收稿日期:2006-06-25
基金项目:国家自然科学基金重点项目(50238030); 国家高技术研究发展计划(“863”计划)项目(2001AA336010)
作者简介:朱 虹(1975-),女,江苏兴化人,讲师,工学博士,E-mail:alice_zhuhong@seu.edu.cn。

常用功能

更新日期/Last Update: 2006-09-20