The authors have reported from experimental investigation that the use of closed stirrups, U-shaped stirrups and rod-shaped reinforcements as shear reinforcements in reinforced concrete (RC) beams results in clear differences in internal crack patterns and maximum strength. In this study, simulations of the experimental beams were performed using a three-dimensional rigid-body spring model, demonstrating that the behavior observed in the experiments is a mechanical phenomenon that can be reproduced numerically. Using the stress distribution over the beam cross section obtained from the analysis, the beam and arch action components of shear resistance are decoupled and considered from the perspective of the shear resistance mechanism. Further, through analysis of additional cases, the role of the upper and lower horizontal legs of the shear reinforcement, the effect of end anchorages on rod-shaped reinforcements were clarified.

作者通过实验调查报告说，在钢筋混凝土 (RC) 梁中使用封闭箍筋、U 形箍筋和杆形钢筋作为抗剪钢筋会导致内部裂缝模式和最大强度的明显差异。在这项研究中，使用三维刚体弹簧模型对实验梁进行了模拟，证明在实验中观察到的行为是一种可以通过数值重现的机械现象。利用分析得到的梁截面上的应力分布，从抗剪机理的角度对梁和拱抗剪作用分量进行解耦和考虑。此外，通过对其他案例的分析，