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首页> 外文期刊>Polymer Sciences >Axial-Flexural Interaction of Square FRP Tube Columns In-Filled with Ultra-High Performance Concrete
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Axial-Flexural Interaction of Square FRP Tube Columns In-Filled with Ultra-High Performance Concrete

机译：填充超高性能混凝土的方形FRP管柱的轴-挠相互作用

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摘要

More than a decade of studies have shown the benefits of ultra-high performance concrete (UHPC) on a ductility, energy absorption, crack distribution, damage tolerance, and deformation capacity. Nevertheless, little information is available on the behavior of UHPC columns especially when confined with fiber-reinforced polymers (FRP). This paper presents the results of experimental program and analytical modelling for performance evaluation of square FRP tubular columns in filled with UHPC under axial-flexural (P-M) loading. Eight steel–reinforced UHPC specimens were tested. Four had FRP tubes and subjected to initial load eccentricity 0, 10, 85 and 95 mm. Three reference columns without FRP tube and subjected to initial load eccentricities 0, 10, 85 mm. The last one had FRP tube and subjected to pure bending. P-M interaction diagram of FRP tubular columns in filled with UHPC were drawn using the obtained experimental results and compared against theoretical P-M interaction diagram that based on the principles of ACI building code. Good agreement between experimental and theoretical results was observed with COV 5.9%.
机译：十多年来的研究表明，超高性能混凝土（UHPC）在延展性，能量吸收，裂缝分布，破坏耐受性和变形能力方面的优势。但是，关于UHPC色谱柱性能的信息很少，尤其是在用纤维增强聚合物（FRP）封闭时。本文介绍了在轴向挠曲（P-M）荷载下填充UHPC的方形FRP管柱性能评估的实验程序和分析模型的结果。测试了八个钢筋UHPC试样。四个装有FRP管，并承受初始载荷偏心度0、10、85和95 mm。三个没有FRP管的参考柱，其初始载荷偏心度为0、10、85 mm。最后一个装有玻璃钢管，并经过纯弯曲。利用获得的实验结果绘制了填充有UHPC的FRP管柱的P-M相互作用图，并与基于ACI建筑规范的理论P-M相互作用图进行了比较。实验结果和理论结果之间的一致性很好，COV为5.9％。

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