Experimental Study on Bond-slip Model for CFRP-concrete Interface Based on Beam Test

王新玲; 杨佳佳; 孙宏运; 李可; 康现栋

doi:10.13409/j.cnki.jdpme.2014.03.013

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Experimental Study on Bond-slip Model for CFRP-concrete Interface Based on Beam Test

更新时间：2025-12-11

- Experimental Study on Bond-slip Model for CFRP-concrete Interface Based on Beam Test
- Vol. 34, Issue 3, Pages: 314-319(2014)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2014.03.013
  CLC： U375
- Published：2014
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[1]王新玲,杨佳佳,孙宏运,李可,康现栋.基于梁式试验的CFRP布-混凝土界面粘结滑移模型研究[J].防灾减灾工程学报,2014,34(03):314-319.

王新玲, 杨佳佳, 孙宏运, et al. Experimental Study on Bond-slip Model for CFRP-concrete Interface Based on Beam Test[J]. 2014, 34(3): 314-319.
[1]王新玲,杨佳佳,孙宏运,李可,康现栋.基于梁式试验的CFRP布-混凝土界面粘结滑移模型研究[J].防灾减灾工程学报,2014,34(03):314-319. DOI： 10.13409/j.cnki.jdpme.2014.03.013.

王新玲, 杨佳佳, 孙宏运, et al. Experimental Study on Bond-slip Model for CFRP-concrete Interface Based on Beam Test[J]. 2014, 34(3): 314-319. DOI： 10.13409/j.cnki.jdpme.2014.03.013.

摘要

设计了CFRP布-混凝土界面粘结性能的梁式试验方案

考虑高强混凝土和CFRP布加固量对粘结滑移关系的影响

设计制作5个试件

进行了静载作用下的试验。试验结果显示

试件均发生混凝土内聚破坏的剥离破坏

拉下约15mm混凝土层。绘出了CFRP布表面应变的分布曲线和粘结滑移曲线。曲线显示

荷载较小时

随着距加载端距离的增加

CFRP布表面应变明显降低;开始剥离后

最大应变即剥离向自由端发展;粘结滑移曲线分上升段、下降段。基于试验数据

给出了最大粘结剪应力τmax和界面破坏能Gf的表达式

在已有模型的基础上

提出了适用于高强混凝土的CFRP布-混凝土界面粘结滑移模型。

Abstract

Beam test program was designed for study on bond-slip performance of CFRP-concrete interface.Static load test on 5beam specimens has been carried out considering the impact of high-strength concrete and strengthening amount of CFRP sheet.Debonding occurred within the concrete for all specimens

pulling down about 1-5mm layer of concrete.Based on test results

CFRP surface strain distribution and bond-slip curve were presented

before peeling

with the increase of the distance from the loading end

the CFRP cloth surface strain significantly reduced.After peeling

the maximum strain moved toward the free end.The bond-slip curve is divided into two phases:ascent stage and decline stage.The formulas of maximum bond shear stressτmax and interfacial failure energy Gfwere derived.Based on existing bond-slip model

the bond-slip model for CFRP-concrete was proposed and applied to high strength concrete.

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references

BFRP/HFRP布-混凝土界面黏结性能试验研究 [J]. 施嘉伟,朱虹,吴智深,吴刚. 东南大学学报(自然科学版) . 2010(03)

外贴纤维与混凝土结合面的粘结滑移关系 [J]. 曹双寅,潘建伍,陈建飞,孙宁. 建筑结构学报 . 2006(01)

FRP-混凝土界面粘结滑移本构模型 [J]. 陆新征,叶列平,滕锦光,庄江波. 建筑结构学报 . 2005(04)

碳纤维抗弯加固钢筋混凝土梁的剥离破坏研究 [D]. 潘建伍. 东南大学 2005

Bond–slip models for FRP sheets/plates bonded to concrete [J] . X.Z. Lu,J.G. Teng,L.P. Ye,J.J. Jiang. Engineering Structures . 2005 (6)

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