Axial Compressive Behavior of Square and Rectangular High-Strength Concrete-Filled FRP Tubes
Axial Compressive Behavior of Square and Rectangular High-Strength Concrete-Filled FRP Tubes
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DOI：
10.1061/(asce)cc.1943-5614.0000321
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发表时间：
2013-02
影响因子：
4.6
通讯作者：
T. Ozbakkaloglu
中科院分区：
文献类型：
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作者：
T. Ozbakkaloglu
本文介绍了方形和矩形高强混凝土（HSC）纤维增强聚合物（FRP）管（HSCFFT）在同心受压下的性能的试验研究结果。通过对24根单向碳纤维布和平均抗压强度为78 MPa的高强混凝土制成的FRP管混凝土（CFFT）的轴压试验，研究了管壁厚度、截面长径比和圆角半径对CFFT轴压性能的影响。作为第一次对方形和矩形HSCFFTs轴向压缩行为的实验研究，本文报道的研究结果允许得出一些重要的结论。首先，测试结果表明，充分限制的正方形和矩形HSCFFTs可以表现出高度的延性行为。结果还表明，FRP管的约束效率随着拐角半径的增大而增大。
AbstractThis paper presents results of an experimental study on the behavior of square and rectangular high-strength concrete (HSC)-filled fiber-reinforced polymer (FRP) tubes (HSCFFT) under concentric compression. The effects of the tube thickness, sectional aspect ratio, and corner radius on the axial compressive behavior of concrete-filled FRP tubes (CFFT) were investigated experimentally through the tests of 24 CFFTs that were manufactured using unidirectional carbon fiber sheets and high-strength concrete with 78 MPa average compressive strength. As the first experimental investigation on the axial compressive behavior of square and rectangular HSCFFTs, the results of the study reported in this paper allow a number of significant conclusions to be drawn. First and foremost, test results indicate that sufficiently confined square and rectangular HSCFFTs can exhibit highly ductile behavior. The results also indicate that confinement effectiveness of FRP tubes increases with an increase in corner radius...