In the current work, a new strength model was proposed for capturing the ultimate axial strength of fiber reinforced polymers (FRP)-confined concrete compression members. First, a preliminary evaluation of previous strength models for estimating the wrapping effect of FRPs-confined concrete specimens was performed a large database of 520 confined concrete specimens was constructed with the detailed information of various geometric and material parameters of confined concrete specimens. Then, a strength model was suggested using regression analysis in MATLAB. The validation of the proposed strength model was made in two different approaches. In the first approach, the validation of proposed models was done by performing an experimental work of 6 carbon fiber reinforced polymer (CFRP) confined concrete cylinders and in the second approach, the nonlinear finite element analysis (NLFEA) via a general-purpose program ABAQUS was performed. After validation, a detailed parametric numerical study was done using the newly suggested strength model. A close agreement could be found between tests, NLFEA and theoretical results.

在当前的工作中，提出了一种新的强度模型，用于捕获纤维增强聚合物（FRP）约束的混凝土压缩构件的极限轴向强度。首先，对以前的强度模型进行了初步评估，以估计FRPs约束混凝土样品的包裹效果，建立了一个包含520个约束混凝土样品的大型数据库，其中包含了约束混凝土样品的各种几何和材料参数的详细信息。然后，使用MATLAB中的回归分析提出了强度模型。所提出的强度模型的验证是通过两种不同的方法进行的。在第一种方法中，通过对6个碳纤维增强聚合物（CFRP）约束混凝土圆柱体进行实验，对提议的模型进行了验证；在第二种方法中，通过通用程序ABAQUS进行了非线性有限元分析（NLFEA）。验证后，使用新建议的强度模型进行了详细的参数数值研究。在测试，NLFEA和理论结果之间可以找到密切的协议。