Bond-slip models for FRP sheets/plates bonded to concrete
Bond-slip models for FRP sheets/plates bonded to concrete
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DOI：
10.1016/j.engstruct.2005.01.014
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发表时间：
2005-05-01
影响因子：
5.5
通讯作者：
Jiang, JJ
中科院分区：
文献类型：
--
作者：
Lu, XZ;Teng, JG;Jiang, JJ
准确的局部粘结滑移模型对FRP加固钢筋混凝土结构的模拟具有重要意义。本文首先对现有的粘结强度模型和粘结滑移模型进行了综述。然后使用253个简单FRP-混凝土粘结节点的拉拔试验结果对这些模型进行了评估，得出的结论是需要一个更准确的模型。在论文的后半部分，提出了一套新的三种不同复杂程度的粘结滑移模型。本工作的一个独到之处是，新的粘结滑移模型不是基于FRP板轴向应变的测量，而是基于细观有限元模型的预测，并对一些关键参数进行适当的调整，使其预测与实验结果相匹配。通过与大型试验数据库的比较，表明三种粘结滑移模型均能准确预测FRP板的粘结强度(即极限荷载)和应变分布。(C)2005爱思唯尔有限公司。保留所有权利。
An accurate local bond-slip model is of fundamental importance in the modelling of FRP-strengthened RC structures. In this paper, a review of existing bond strength models and bond-slip models is first presented. These models are then assessed using the results of 253 pull tests on simple FRP-to-concrete bonded joints, leading to the conclusion that a more accurate model is required. In the second half of the paper, a set of three new bond-slip models of different levels of sophistication is proposed. A unique feature of the present work is that the new bond-slip models are not based on axial strain measurements on the FRP plate; instead, they are based on the predictions of a meso-scale finite element model, with appropriate adjustment to match their predictions with the experimental results for a few key parameters. Through comparisons with the large test database, all three bond-slip models are shown to provide accurate predictions of both the bond strength (i.e. ultimate load) and the strain distribution in the FRP plate. (c) 2005 Elsevier Ltd. All rights reserved.