有限粘结长度外粘结FRP的粘结-滑移关系

Yingwu Zhou, Yufei Wu, Yanchun Yun, L. Sui, F. Xing
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引用次数: 0

摘要

本文建立了一个分析模型,推导了外部粘结FRP (EB-FRP)在钢筋-基板混凝土界面(接缝)处的粘结-滑移关系。该模型一般适用于长节点(无限键长)和短节点。有限键长短节点的粘结滑移关系是EB-FRP节点的一般模型。当键长接近无穷大时,模型退化为已知的解析模型。通过建模可知,现有的长节理模型不适用于粘结长度小于有效粘结长度的短节理,也不适用于长节理中距离钢筋自由端较近的位置。用试验结果验证了粘结滑移关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Bond-Slip Relationship for Externally-Bonded FRP with Limited Bond Length
An analytical model is developed in this work to derive the bond-slip relationship at the reinforcement-substrate concrete interface (joint) for externally bonded FRP (EB-FRP). The model is generally applicable to both long joints (infinite bond length) and short joints. The bond-slip relationship for short joints with a limited bond length is a general model for EB-FRP joints. When the bond length approaches infinity, the model degenerates to a well-known existing analytical model. It is concluded from the modeling that the existing model for long joints is not applicable to short joints that have a bond length that is less than the effective bond length, or at locations in long joints that are closer than the effective bond length to the free end of the reinforcement. The bond-slip relationship is verified with test results.
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