CFRP-混凝土界面粘结滑移本构关系试验研究
An Experimental Study on Bond-Slip Constitutive Relationships of the CFRP-Concrete Interface

作者: 胡砚龙 :21156696@qq.com; 李云飞 , 吴小勇 :三峡大学土木与建筑学院,宜昌; 王 辉 :汕头大学工学院,汕头;

关键词: 粘结滑移本构关系碳纤维复合材料混凝土双拉试件 Bond-Slip Constitutive Relationships CFRP Concrete Bidirectional-Pull Specimens

摘要:
鉴于碳纤维复合材料(CFRP)的轻质高强、耐腐蚀、施工方便等特点,使用CFRP对结构进行维修加固也越来越广泛。然而,混凝土与CFRP粘结界面的粘结剪应力与滑移之间的本构关系却还没有形成统一的认识,尤其是本构关系的下降段更是难以准确测量出来。本文在于改进方法下实验探究粘结界面的粘结应力滑移(τ-δ)本构关系,争取实验测出CFRP-混凝土界面的τ-δ本构关系全曲线。试验采用改进的双拉试件,采用水平加载,排除附加弯矩影响,提高实验结准确性。实测17个试件的CFRP界面τ-δ本构关系曲线,根据τ-δ本构关系曲线特性,分析粘结面受力特点。
>In view of the light weight, high strength, corrosion resistance and convenient construction of carbon fiber reinforced polymer (CFRP), using CFRP to strengthen structure is becoming more and more widely. However, there is no commonly accepted understanding of the constitutive relationship of the bonding shear stress and slip between con-crete and CFRP bonded interface; especially the decline of the constitutive relation is more difficult to measure accu-rately. The aim of this paper is to improve the experiment to explore bond stress and slip (τ-δ) constitutive relation of the bonding interface, making sure that the experiment can measure the τ-δ constitutive relation curve of CFRP-concrete interface. Double pull test was adopted with the improved specimen, using the horizontal load, to eliminate additional bending moment influence and improve the experimental accuracy. 17 specimens were tested to measure the τ-δ curves. According to the features of the constitutive relation curves, the mechanical characteristics of the bonding interface were further analyzed.

文章引用: 胡砚龙 , 李云飞 , 王 辉 , 吴小勇 (2013) CFRP-混凝土界面粘结滑移本构关系试验研究 。 土木工程, 2, 275-278. doi: 10.12677/HJCE.2013.25046

参考文献

[1] [1] 韩强 (2010) CFRP-混凝土界面粘结滑移机理研究. 博士论文, 华南理工大学, 广州.

[2] 方恩权, 李进舜, 张雷顺 (2007) CFRP-混凝土界面粘结行为解析分析. 工业建筑, 37, 66-69.

[3] 方恩权, 刘桂凤, 张雷顺 (2007) CFRP-混凝土界面粘结性能试验研究. 建筑材料学报, 10, 32-36.

[4] 朱晓玲 (2008) CFRP-混凝土界面粘结性能试验研究. 硕士论文, 中南大学, 长沙.

[5] 杨勇新, 岳清瑞, 胡云昌 (2001) 碳纤维布与混凝土粘结性能的试验研究. 建筑结构学报, 22, 36-42.

[6] Wang, J., Cai, X.J. and Tian, S.Z. (2009) Numerical simulation on seismic behavior of CFRP retrofitted RC short column based on OpenSees. World Earthquake Engineering, 25, 108-111.

[7] Zhu, Y.R. and Guo, Z.X. (2010) Numerical simulation of SRC column under low-cyclic loading based on OpenSees. Journal of Guangxi University (Natural Science Edition), 35, 555-559.

[8] Hamutçuoğlu, O.M. and Scott, M.H. (2009) Finite element reliability analysis of bridge girders considering moment-shear interaction. Structural Safety, 31, 356-362.

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