This study proposed an analytical method based on the Three Dimensional Rigid Body Spring Model (3D-RBSM) to realistically simulate bond behavior of deformed rebar in concrete. In this method, concrete was modeled by rigid particles using a voronoi mesh with random geometry and rebar was modeled by beam element connected to concrete through a link element that was assigned a suitable local bond model. The proposed model enables to evaluate changes in internal cracking and stress distribution due to variation in cover thickness and rebar diameter. Furthermore, it can simulate the bond stress slip behavior and transition of failure modes. Based on analytical results, it was confirmed that the proposed simplified model can evaluate bond behavior like three dimensional rebar model with rib shape, consequently, it provides an economical and efficient alternative due to lesser computational elements.

这项研究提出了一种基于三维刚体弹簧模型（3D-RBSM）的分析方法，以实际模拟混凝土中变形钢筋的粘结行为。在这种方法中，使用具有随机几何形状的voronoi网格通过刚性粒子对混凝土进行建模，并通过通过链接元素连接至混凝土的梁单元对钢筋进行建模，而该链接元素被分配了合适的局部粘结模型。所提出的模型能够评估由于覆盖层厚度和钢筋直径的变化而引起的内部裂纹和应力分布的变化。此外，它可以模拟粘结应力滑移行为和破坏模式的转变。根据分析结果，可以确认该简化模型可以评估具有肋骨形状的三维钢筋模型之类的粘结行为，因此，