The objective of this research study is to demonstrate the axial compressive behavior of GRFC columns by fabricating five circular columns (1150 mm high and 250 mm in cross-section) and testing them under axial concentric loading. Two different kinds of fibers, that is, polyvinyl alcoholfibers (PVA) and polypropylene fibers (PPF) were incorporated into the concrete. Two types of transverse confinement (GFRP hoops and GFRP spirals) were provided. The efficiency of GFRP hoops was explored by providing them at the spacing of 75 mm, 150 mm, and 250 mm, respectively. The efficiency of GFRP spirals was examined by keeping the spacing of 38 mm and 75 mm, respectively. The GRFC columns confined with GFRP spirals portrayed higher axial strength and higher ductility indices. Furthermore, an extensive finite element modeling (FEM) was performed by considering the effect of hybrid fibers using a modified concrete damaged plastic (CDP) model. The proposed FEM captured the axial response and cracking behavior of GRFC columns with high accuracy. This study also proposed a new empirical model for capturing the axial strength of GRFC columns by considering the influence of GFRP bars and lateral confinement of GFRP hoops/spirals.

本研究的目的是通过制造五个圆形圆柱（高1150 mm，横截面250 mm）并在轴向同心载荷下对其进行测试来证明GRFC圆柱的轴向压缩行为。将两种不同的纤维，即聚乙烯醇纤维（PVA）和聚丙烯纤维（PPF）掺入混凝土中。提供了两种类型的横向约束（GFRP箍和GFRP螺旋形）。通过分别提供75 mm，150 mm和250 mm的间距来探索GFRP箍的效率。通过分别保持38 mm和75 mm的间距来检查GFRP螺旋的效率。GFRP螺旋限制的GRFC柱具有更高的轴向强度和更高的延展性指标。此外，通过使用改良的混凝土破损塑料（CDP）模型考虑混合纤维的影响，进行了广泛的有限元建模（FEM）。拟议的有限元分析捕获了GRFC柱的轴向响应和开裂行为，具有很高的准确性。这项研究还提出了一个新的经验模型，该模型通过考虑GFRP筋的影响和GFRP箍/​​螺旋的侧向约束来捕获GRFC柱的轴向强度。