HB-FRP加固混凝土结构的粘结滑移统一模型

张峰; 徐向锋; 李术才

doi:10.3879/j.issn.1000-0887.2015.12.008

HB-FRP加固混凝土结构的粘结滑移统一模型

doi: 10.3879/j.issn.1000-0887.2015.12.008

¹山东大学岩土与结构工程研究中心,济南 250061;²山东交通学院土木工程系, 济南 250023

基金项目: 国家自然科学基金青年科学基金（51108249）

详细信息

作者简介:
张峰（1978—），男，江苏泰州人，副教授，博士，硕士生导师（通讯作者. E-mail: zhangfeng2008@shu.edu.cn）.

中图分类号: TU375.02
计量
- 文章访问数: 1335
- HTML全文浏览量: 181
- PDF下载量: 631
- 被引次数: 0
出版历程
- 收稿日期: 2015-03-25
- 修回日期: 2015-11-13
- 刊出日期: 2015-12-15

A Unified Bond-Slip Model for HB-FRP Strengthened Concrete Structures

¹Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, P.R.China;²Department of Civil Engineering, Shandong Jiaotong University, Jinan 250023, P.R.China

Funds: The National Science Fund for Young Scholars of China（51108249）

摘要

摘要: 为了进一步简化HB-FRP(hybrid bonding FRP)加固技术的粘结滑移模型, 并基于先期研究的HB-FRP粘结滑移分区模型开展研究.在假定HB-FRP加固技术的粘结滑移统一模型表达式的基础上，推导了钢扣件部位的粘结应力分布系数.将HB-FRP加固作用分为普通FRP粘结性能和钢扣件产生的粘结性能两部分，依据能量方法，推导了FRP张拉力与滑移量的表达式.基于理论分析和数值求解，研究了界面滑移量的分布特征.基于模型试验测试结果，研究了粘结滑移统一模型中的待定系数表达式.研究结果表明：建立的HB-FRP加固混凝土结构的粘结滑移统一模型能有效预测加固界面的剥离承载力及有效粘结长度.
- 混凝土 /
- 加固 /
- 粘结滑移统一模型 /
- HB-FRP /
- 剥离承载力 /
- 有效粘结长度
Abstract: In order to simplify the bond-slip models for the HB-FRP strengthening technology, the expression of a unified bond-slip model for HB-FRP strengthened concrete structures was assumed based on a previously built partition bond-slip model. The distribution of bond stress was deduced. The bond force of the HB-FRP was divided into 2 parts: one from the EB-FRP and the other from the steel fasteners. The relationship between load on FRP and slip was derived based on the energy method. The interfacial slip was investigated with the theoretical and numerical methods. The undetermined coefficients in the bond-slip model were formulated based on the model test results. The research results show that, the unified bond-slip model for HB-FRP strengthened concrete structures can effectively predict the bond strength and effective bond length of HB-FRP.
- concrete /
- strengthen /
- unified bond-slip model /
- HB-FRP /
- bond strength /
- effective bond length

HTML全文

参考文献(24)

[1]	Chen J F, Teng J G. Shear capacity of FRP strengthened RC beams: FRP debonding[J].Construction & Building Materials,2003,17(1): 27-41.
[2]	Chen J F, Teng J G. Anchorage strength models for FRP and steel plates bonded to concrete[J].Journal of Structural Engineering, ASCE,2001,127(7): 784-791.
[3]	Teng J G, Smith S T, Yao J, Chen J F. Intermediate crack-induced debonding in RC beams and slabs[J].Construction & Building Materials,2003,17(6/7): 447-462.
[4]	王文炜, 李果. FRP加固钢筋混凝土梁抗剪承载力计算方法研究[J]. 公路交通科技, 2006,23(2): 106-110.(WANG Wen-wei, LI Guo. Study on calculated method of shear capacity of RC beams strengthened with FRP[J].Journal of Highway and Transportation Research and Development,2006,23(2): 106-110.(in Chinese))
[5]	LU Xin-zheng, YE Lie-ping, TENG Jing-guang, JIANG Jian-jing. Meso-scale finite element model for FRP sheets/plates bonded to concrete[J].Engineering Structures,2005,27(4): 564-575.
[6]	YUAN Hong, WU Zhi-sheng, Yoshizawa H. Theoretical solutions on interfacial stress transfer of externally bonded steel/composite laminates[J].Proceedings of the Japan Society of Civil Engineers,2001,675: 27-39.
[7]	Carloni C, Subramaniam K V, Savoia M, Mazzotti C. Experimental determination of FRP-concrete cohesive interface properties under fatigue loading[J].Composite Structures,2012,94(4): 1288-1296.
[8]	WU Yu-fei, HUANG Yue. Hybrid bonding of FRP to reinforced concrete structures[J].Journal of Composites for Construction,2014,12(3): 266-273.
[9]	WU Yu-fei, WANG Zheng-yu, LIU Kang, HE Wei, WANG Zhen-yu. Numerical analysis of hybrid-bonded FRP strengthened concrete beams[J].Computer-Aided Civil and Infrastructure Engineering,2009,24(5): 371-384.
[10]	YUN Yan-chun, WU Yu-fei, TANG Wai-ching. Perfromance of FRP bonding systems under fatigue loading[J].Engineering Structures,2008,30(11): 3129-3140.
[11]	颜俊辉. FRP混合粘贴技术加固混凝土梁的试验研究[D].硕士学位论文. 长沙: 湖南大学, 2009.(YAN Jun-hui. Experimental investigation on hybrid bonded FRP for strengthening reinforced concrete beams[D]. Master Thesis. Changsha: Hunan University, 2009.(in Chinese))
[12]	WU Zhi-min, HU Cheng-he, WU Yu-fei, ZHENG Jian-jun. Application of improved hybrid bonded FRP technique to FRP debonding prevention[J].Construction and Building Materials,2011,25(6): 2898-2905.
[13]	胡程鹤. 改进的复合粘结FRP技术的试验研究[D]. 博士学位论文. 大连：大连理工大学, 2011.(HU Cheng-he. Experimental study on improved hybrid bonded FRP technology[D]. PhD Thsis. Dalian: Dalian University of Technology, 2011.(in Chinese))
[14]	ZHOU Yin-zhi, GOU Ming-kang, ZHANG Feng-yu, ZHANG Shou-jun, WANG Dan. Reinforced concrete beams strengthened with carbon fiber reinforced polymer by friction hybrid bond technique: experimental investigation[J].Material and Design,2013,50(17): 130-139.
[15]	张峰, 牛平霞, 李树忱, 孙秋彦. FRP-螺栓联合加固RC梁粘结性能试验研究[J]. 土木建筑与环境工程, 2011,32(6): 7-13.(ZHANG Feng, NIU Ping-xia, LI Shu-chen, SUN Qiu-yan. Experimental research on bonding behaviou of hybrid-bonding of FRP[J].Journal of Civil, Architectural & Environmental Engineering,2011,32(6): 7-13.(in Chinese))
[16]	管延华, 苗海涛, 宋修广. FRP-螺栓联合加固技术锚固参数的研究[J]. 山东大学学报(工学版), 2010,40(3): 128-132.(GUAN Yan-hua, MIAO Hai-tao, SONG Xiu-guang. Study of anchoring parameter for hybrid bonding of FRP[J].Journal of Shandong University(Engineering Science),2010,40(3): 128-132.(in Chinese))
[17]	管延华, 蒋斌松, 宋修广, 杨勇. FRP-螺栓联合加固RC梁受剪承载能力试验研究[J]. 山东大学学报(工学版), 2010,40(2): 82-86.(GUAN Yan-hua, JIANG Bing-song, SONG Xiu-guang, YANG Yong. Experimental study on RC beams strengthened in shear with hybrid bonding of FRP[J]Journal of Shandong University(Engineering Science),2010,40(2): 82-86.(in Chinese))
[18]	WU Yu-fei, LIU Kang. Characterization of mechanically enhanced FRP bonding system[J].Journal of Composites for Construction,2013,17(1): 34-49.
[19]	张峰, 徐向锋, 李术才. HB-FRP加固混凝土结构的粘结滑移模型[J]. 中国公路学报, 2015,28(1): 38-44(ZHANG Feng, XU Xiang-feng, LI Shu-cai. Bond-slip model for HB-FRP systems bonded to concrete[J].China Journal of Highway and Transport,2015,28(1): 38-44.(in Chinese))
[20]	Lamanna A J, Bank L C, Borowicz D T. Mechanically fastened FRP strengthening of large scale RC bridge T beams[J].Advances in Structural Engineering,2004,7(6): 525-538.
[21]	WU Yu-fei, Yan J H, Zhou Y W, Xiao Y. Ultimate strength of reinforced concrete beams retrofitted with hybrid bonded fiber reinforced polymer[J].ACI Structural Journal,2010,107(4): 451-460.
[22]	ZHOU Yin-wu, WU Yu-fei, YUN Yan-chuan. Analytical modeling of the bond-slip relationship at FRP-concrete interfaces for adhesively-bonded joints[J]. Composites Part B: Engineering,2010,41(6): 423-433.
[23]	LIU Kang. Computational modeling, experimental and theoretical study on bond behaviors of hybrid-bonded FRP strengthened concrete structures[D]. PhD Thsis. Hong Kong: City University of Hong Kong, 2011.
[24]	薛定宇, 陈阳泉. 高等应用数学问题的MATLAB求解[M]. 第2版. 北京: 清华大学出版社, 2008.(XUE Ding-yu, CHEN Yang-quan.Advanced Applied Mathematical Problem Solutions With MATLAB[M]. 2nd ed. Beijing: Tsinghua Univeristy Press, 2008.(in Chinese))