Bond of Fiber-Reinforced Polymer Laminates to Concrete
Bond of Fiber-Reinforced Polymer Laminates to Concrete
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DOI：
10.14359/10281
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发表时间：
2001-05
影响因子：
1.7
通讯作者：
L. Lorenzis;B. Miller;A. Nanni
中科院分区：
文献类型：
--
作者：
L. Lorenzis;B. Miller;A. Nanni
纤维增强聚合物（FRP）层压板正成功地用于加固现有的钢筋混凝土结构。FRP筋与混凝土基体的粘结对该技术的有效性至关重要。在这项研究中，弯曲试样制备，以解决一些因素，预计会影响债券，如粘结长度，混凝土强度，层数（刚度），层宽度，并在较小程度上，表面处理。实验结果进行了介绍和讨论。线性粘结应力-滑动关系，沿着用于评估滑动模量的简单剪切模型，用于预测中等载荷水平下的应变分布。最后给出了剥离载荷和有效粘结长度的表达式。提出了一个设计方程，用于计算有效FRP极限应变，用于设计考虑粘结控制失效。
Fiber-reinforced polymer (FRP) laminates are being successfully used for strengthening existing reinforced concrete structures. The bond of FRP reinforcement to the concrete substrate is of great importance for the effectiveness of this technique. In this research, flexural test specimens were prepared to address some of the factors expected to affect bond such as bonded length, concrete strength, number of plies (stiffness), ply width, and, to a lesser extent, surface preparation. Experimental results are presented and discussed. A linear bond stress-slip relationship, along with a simple shear model for the evaluation of the slip modulus, is used to predict the strain distribution at moderate load levels. Lastly, expressions of the peeling load and the effective bond length are provided. A design equation is proposed for calculating the effective FRP ultimate strain to be used in design to account for bond-controlled failure.