| 彭晖*,高勇,陈俊敏,蒋鑫.表层嵌贴CFRP板条-混凝土界面粘结应力模型的试验与理论研究[J].实验力学,2014,29(5):655~665 |
| 表层嵌贴CFRP板条-混凝土界面粘结应力模型的试验与理论研究 |
| Experimental and Theoretical Study on Model of Interfacial Bond Stress between Near-Surface Mounted CFRP Strips and Concrete |
| 投稿时间：2014-08-12 修订日期：2014-09-15 |
| DOI： |
| 中文关键词: 表层嵌贴 碳纤维增强聚合物板条 粘结应力模型 粘结滑移本构关系 残余摩擦力 |
| 英文关键词:near-surface mounted (NSM) carbon fiber reinforced polymer (CFRP) strips bond stress model bond-slip constitutive model residual friction |
| 基金项目:国家重点基础研究发展计划项目(2015CB057701)，国家自然科学基金项目(51008036)，湖南省教育厅科学研究重点项目(14A005)，长沙市科技计划项目(K1203038-11) |
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| 中文摘要: |
| 基于表层嵌贴CFRP板条-混凝土粘结性能试验研究的结果,提出了考虑残余摩擦力的三线性粘结滑移本构模型，建立了嵌贴CFRP-混凝土界面粘结应力模型；通过求解微分方程得出了解析解的一般形式，进而推导出界面相对滑移、粘结应力和CFRP拉伸应力等随荷载的分布函数，并得到了粘结承载力的计算公式。在此基础上，通过试验数据对粘结应力模型进行了验证，理论计算值与试验值吻合较好。研究结果表明，本文提出的表层嵌贴CFRP板条-混凝土界面粘结应力模型能够很好地预测嵌贴FRP-混凝土的粘结承载力，并且能够准确描述界面粘结应力的分布。 |
| 英文摘要: |
| By taking into account the residual friction, a tri-linear bond-slip constitutive model is proposed in this paper based on bonding property experimental results of near-surface mounted (NSM) carbon fiber reinforced polymer (CFRP) strips with concrete. Furthermore, the bond stress model between NSM CFRP strips and concrete is established. The general form of analytical solution for the model was obtained through solving the differential equations, and then distribution variation of the interfacial slip, the bond stress and CFRP tensile stress along with loading was derived, the calculation formula of bond capacity was also obtained. Based on above results, the bond stress model was validated by comparing with experimental data, and theoretical calculation results are in good agreement with experimental data. This proves that the bond stress model proposed in this paper can well predict the bond capacity of the NSM FRP-to-concrete interface and correctly describe the distribution of interfacial bond stress. |
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