Plate end debonding in FRP-plated RC beams-II: Strength model
Plate end debonding in FRP-plated RC beams-II: Strength model
复制标题
DOI：
10.1016/j.engstruct.2006.11.023
复制
发表时间：
2007-10
影响因子：
5.5
通讯作者：
J. Teng;J. Yao
中科院分区：
文献类型：
--
作者：
J. Teng;J. Yao
在受拉面粘贴FRP或钢板加固的RC梁在弯曲时会因板端或板端附近的脱粘而失效。本文提出了一个简单的，合理的预测模型，这样的板端脱粘故障。在该模型中，纯弯曲脱粘板端位于纯弯曲区域和纯剪切脱粘板端位于高剪切零（或低）力矩区首先处理。板端在剪切和弯曲联合作用下的一般情况被视为这两个极端条件的相互作用。通过与现有试验结果的比较，表明该模型是准确的。该模型将剥离破坏荷载与梁的抗剪承载力和一些明确定义的参数联系起来，可以很容易地纳入任何国家或国际设计规范和指南。
RC beams strengthened in flexure by bonding an FRP or steel plate to the tension face can fail by debonding at or near the plate end in a number of different modes. This paper presents a simple, rationally-based predictive model for such plate end debonding failures. In this model, pure flexural debonding for a plate end located in a pure bending region and pure shear debonding for a plate end located in a high-shear zero (or low)-moment region are first dealt with. The general case of a plate end under the combined action of shear and bending is treated as the interaction of these two extreme conditions. The proposed model is shown to be accurate through comparisons with available test results. The model relates the debonding failure load to the shear capacity of the beam and a number of well-defined parameters, and can be easily incorporated in any national or international design codes and guidelines.