Basalt fiber reinforced polymer (BFRP) bars have been widely studied because of its advantages in corrosive environment. At present, the researches on the bond properties of basalt FRP bars mainly focus on the types of bars, bond length and environmental effects. In this paper, the bond properties of 12 mm diameter glass fiber reinforced bars with unilateral and bilateral compressive stresses of 0, 0.15, 0.3, 0.45, 0.6 and 0.75 were studied for revealing the effects of lateral stress. In addition, based on the analysis of the influence of compressive stress on the failure mode, a theoretical analysis model is established. Based on the fitting of ultimate bond strength and slip amount, the bond slip constitutive model of basalt fiber embedded in concrete is proposed, which can work under different compressive stress.

中文翻译：

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BFRP筋在侧压下混凝土中的粘结行为

玄武岩纤维增强聚合物 (BFRP) 钢筋因其在腐蚀环境中的优势而被广泛研究。目前，玄武岩FRP筋粘结性能的研究主要集中在筋的种类、粘结长度和环境效应等方面。在本文中，研究了单边和双边压缩应力为 0、0.15、0.3、0.45、0.6 和 0.75 的 12 毫米直径玻璃纤维钢筋的粘合性能，以揭示侧向应力的影响。此外，在分析压应力对破坏模式的影响的基础上，建立了理论分析模型。基于极限粘结强度与滑移量的拟合，提出了可在不同压应力下工作的玄武岩纤维嵌入混凝土的粘结滑移本构模型。