Traditional reinforced concrete columns have demonstrated poor seismic performance especially in corrosive environment as the reinforcement bars experience severe corrosion under such conditions. To overcome the problem of steel corrosion, glass fiber-reinforced polymer (GFRP) reinforced concrete columns have gained significant attention in recent years. However, the seismic performance of GFRP reinforced concrete column is not well understood yet. One of the main challenges associated with the use of GFRP bars is its brittle behavior. Therefore, it is necessary to investigate the mechanical properties and failure modes of GFRP reinforced concrete structures under seismic action. In this research, the seismic behavior of GFRP reinforced concrete columns and conventional columns under different axial compression ratios are analyzed by low-cycle repeated pseudo-static loading tests. As a result, the deformation and the seismic energy dissipation capacity of GFRP reinforced concrete columns are investigated and discussed. Furthermore, the failure mechanism of GFRP bar structure is studied to provide the basis for improving the seismic design method of GFRP reinforced concrete structure and modifying the code for seismic design. In addition, the influence of axial compression ratio on the seismic behavior of full GFRP reinforced concrete columns is investigated. The results of this experiment demonstrate that with the increase of axial compression ratio, the ultimate bearing capacity of GFRP reinforced concrete columns increases, while the deformation and the cumulative energy dissipation capacity decrease.

中文翻译：

---

轴压比对GFRP钢筋混凝土柱抗震性能的影响

传统的钢筋混凝土柱表现出较差的抗震性能，特别是在腐蚀环境中，因为钢筋在这种条件下会遭受严重的腐蚀。为克服钢筋腐蚀问题，玻璃纤维增​​强聚合物（GFRP）增强混凝土柱近年来受到了广泛关注。然而，GFRP 钢筋混凝土柱的抗震性能还不是很清楚。与使用 GFRP 钢筋相关的主要挑战之一是其脆性行为。因此，有必要研究GFRP钢筋混凝土结构在地震作用下的力学性能和破坏模式。在这项研究中，通过低周反复拟静力试验，分析了GFRP钢筋混凝土柱和常规柱在不同轴压比下的抗震性能。因此，对GFRP钢筋混凝土柱的变形和抗震消能能力进行了研究和讨论。此外，研究了GFRP筋结构的破坏机理，为改进GFRP钢筋混凝土结构抗震设计方法和修改抗震设计规范提供依据。此外，还研究了轴压比对全GFRP钢筋混凝土柱抗震性能的影响。本试验结果表明，随着轴压比的增加，GFRP钢筋混凝土柱的极限承载力增加，