Testing and modeling of a novel FRP-encased steel–concrete composite column
Testing and modeling of a novel FRP-encased steel–concrete composite column
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DOI：
10.1016/j.compstruct.2010.11.017
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发表时间：
2011-04
影响因子：
6.3
通讯作者：
K. Karimi;M. Tait;W. El-Dakhakhni
中科院分区：
文献类型：
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作者：
K. Karimi;M. Tait;W. El-Dakhakhni
提出了一种由钢、混凝土和纤维增强聚合物(FRP)组成的组合柱，并通过试验和分析模型对其进行了评估。组合柱采用玻璃钢(GFRP)复合管，环绕钢工字形截面，然后用混凝土填充。除了对混凝土进行限制外，玻璃钢管还起到了留在原地的作用。本研究主要研究拟建组合柱在轴压作用下的受力性能。共有7个样本进行了测试。研究了混凝土收缩对组合柱受压性能的影响。显著的限制和复合作用导致了压缩行为的增强。减缩剂的加入进一步改善了复合柱的抗压性能。建立了组合柱在轴压作用下的受力分析模型。
A composite column consisting of steel, concrete and fiber reinforced polymer (FRP) is presented and assessed through experimental testing and analytical modeling. The composite column utilizes a glass FRP (GFRP) composite tube that surrounds a steel I-section, which is subsequently filled with concrete. The GFRP tube acts as a stay-in-place form in addition to providing confinement to the concrete. This study investigates the behavior of the proposed composite columns under axial loading. A total of seven specimens were tested. The influence of concrete shrinkage on the compressive behavior of the composite columns was also investigated. Significant confinement and composite action resulted in enhanced compressive behavior. The addition of a shrinkage reducing agent was found to further improve the compressive behavior of the composite columns. An analytical model was developed to predict the behavior of the composite columns under axial loading.