Behavior of FRP-Confined Concrete-Filled Steel Tube Columns
Behavior of FRP-Confined Concrete-Filled Steel Tube Columns
复制标题
FRP约束钢管混凝土柱的性能
DOI：
10.3390/polym6051333
复制
发表时间：
2014-05-01
期刊：
影响因子：
5
通讯作者：
Li, Shan
中科院分区：
文献类型：
--
作者：
Lu, Yiyan;Li, Na;Li, Shan
本文介绍了纤维增强聚合物（FRP）约束钢管混凝土柱的试验研究结果。通过11根钢管混凝土柱的试验，研究了FRP层数、钢管厚度和混凝土强度对柱承载力和轴向变形能力的影响。试验结果表明，FRP包裹能有效地限制混凝土的膨胀，延缓钢管的局部屈曲。FRP约束可以显著提高钢管混凝土柱的承载力和轴向变形能力。建立了FRP约束钢管混凝土柱承载力的预测模型。预测结果与本研究和文献中的实验结果基本一致。
This paper presents the results of an experimental study into the behavior of concrete-filled steel tube columns confined by fiber-reinforced polymer (FRP). Eleven columns were tested to investigate the effects of the FRP layer number, the thickness of the steel tube and concrete strength on their load capacity and axial deformation capacity. The experimental results indicated that the FRP wrap can effectively confine the concrete expansion and delay the local buckling of the steel tube. Both the load capacity and the axial deformation capacity of concrete-filled steel tube columns can be substantially enhanced with FRP confinement. A model is proposed to predict the load capacity of the FRP-confined concrete-filled steel tube columns. The predicted results are generally in good agreement with the experimental ones obtained in this study and in the literature.