Abstract: According to the domestic and foreign scholars on the research status of GFRP concrete column, the hollow reinforced concrete column confined by GFRP tube was put forward as a new type of member. Three hollow GFRP reinforced concrete columns were designed, and the compression capacity under three kinds of reinforcement ratio through the static test method was investigated. At the same time, the simulation analysis was carried out on the specimens combining with the finite element software ANSYS, a reference for practical engineering was provided. The results show the bearing capacity of specimen increased with the increase of reinforcement ratio, but not linear relationship. With the increase of reinforcement ratio, the confinement effect of composite columns increased firstly and then decreased. When the longitudinal reinforcement ratio of the new type of composite columns was 0.9%, the loading mechanism was best, and the confinement effect by the GFRP tube was largest.

Key words: GFRP, Reinforcement ratio, Static test, ANSYS, Hollow reinforced concrete column

摘要： 鉴于国内外对G F R P混凝土柱已有的研究结果, 提出了中空G F R P钢筋混凝土柱这一新型结构。设计3个中空G F R P钢筋混凝土柱, 通过静力试验方法考察了3种配筋率下构件的受压能力。同时, 结合有限元软件AN S Y S对试件进行了仿真分析。结果表明, 试件的承载力随着配筋率的增大而增大, 但承载力的变化幅度与纵向钢筋面积的变化幅度不呈线性关系; 组合柱的约束能力随着配筋率的增大先增大后减小; 该新型组合柱纵向钢筋配筋率为0. 9%时承载力最大, G F R P管对核心混凝土的约束能力最大。

关键词: G F R P, 配筋率, 静力试验, AN S Y S, 中空钢筋混凝土柱