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通过对冻融循环和盐水-冻融循环复合两种环境下连续玄武岩纤维约束混凝土圆柱的轴向抗压试验,研究环境对连续玄武岩纤维约束混凝土圆柱的割线泊松比-纵向应力曲线以及割线泊松比的影响。结果表明:在恶劣环境下连续玄武岩纤维约束混凝土圆柱的割线泊松比-纵向应力曲线受环境因素影响而发生规律性变化,在极限割线泊松比环境影响因素分析的基础上,引入环境变量,提出极限割线泊松比的计算公式,计算结果与试验值吻合较好。
The axial compressive tests of continuous basalt fiber confined concrete columns under two environments of freeze-thaw cycle and salt water-freeze-thaw cycles were carried out to study the influence of the environment on the secant Poisson’s ratio-longitudinal stress curve of the continuous basalt fiber-confined concrete columns, Effect of linear Poisson’s ratio. The results show that the secant Poisson ’s ratio - longitudinal stress curve of continuous basalt fiber confined concrete columns under harsh environment changes regularly with the influence of environmental factors. Based on the analysis of the influencing factors of Poisson’ s ratio at the limit secant, Variable, the formula of Poisson’s ratio of limit secant is proposed, and the calculated result is in good agreement with the experimental value.