In the current research, an experimental program, consisting of one straight beam and seven stepped beams (SBs), is to be carried out. Furthermore, a numerical validation is to be applied using finite element analysis. The effect of the additional vertical and horizontal stirrups, the diagonal bars, the configuration of the tension bars, and the inclination angle of the stepped joint on the behavior of the SB is to be examined. Moreover, the influence of the width and the drop of the stepped joint on the behavior of the SB is to be induced. Compared with the straight beam, the ratios of the ultimate load decrease of the SB ranged from −64.23% to 0.00%. On the one hand, as the joint drop increases, the ultimate load of the SB decreases. On the other hand, when the joint width increases, the ultimate load of the SB increases. Many proposed techniques in reinforcing and dimensions of the stepped part have increased the flexural capacity. Proposed equations of the flexural capacity of the SB are to be induced after examination, taking into consideration the required parameters of the stepped beams, such as the compressive strength of the concrete, the tension and the compression steel, the dimension of the beam section, the horizontal stirrups, the diagonal bars, or the width and the drop of the stepped joint.

中文翻译：

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不同配置的RC阶梯梁的性能：实验和数值研究

在当前的研究中，将执行由一个直光束和七个阶梯光束（SBs）组成的实验程序。此外，将使用有限元分析进行数值验证。将检查附加的垂直和水平箍筋，对角杆，拉力杆的配置以及阶梯形接头的倾斜角度对SB性能的影响。此外，应引起阶梯形接头的宽度和高度下降对SB性能的影响。与直梁相比，SB的极限载荷减小率范围为-64.23％至0.00％。一方面，随着关节下降的增加，SB的极限载荷减小。另一方面，当接头宽度增加时，SB的极限载荷增加。在加强和阶梯部分的尺寸方面提出了许多建议的技术，这些技术增加了挠曲能力。考虑到阶梯梁的要求参数，例如混凝土的抗压强度，抗拉和抗压钢，梁截面的尺寸，水平的箍筋，对角线或台阶的宽度和高度。