Recently a new type of Reduced Beam Section (RBS) connection called “Tubular Web RBS (TW-RBS)” has been numerically and experimentally studied. TW-RBS connections are made by replacing a part of web with a tube or pipe at the desirable location of the beam plastic hinge. This paper aims to numerically investigate the effect of key factors such as position, diameter, and thickness of the tube on the hysteretic behavior of the connection under cyclic load using ABAQUS finite element software. First, a model is used for verification purposes where good correlation with experimental results was achieved. Then, 14 models are defined by varying the key parameters and subjected to cyclic loading. The effects of such factors on the behavior of the connection are investigated in order to find out consequences of probable defects during the implementation of TW-RBS connections or intentional utilizing of other pipes in TW-RBSs. Based on the results, the position of the tube is the most sensitive factor in the behavior of TW-RBS connections and its improper location leads to unreliable design, probable plastic hinge formations in unpredicted regions, and possible failure in the connection zone. On the contrary, diameter and thickness of the tube have negligible effect on the energy dissipation mainly depending on beam section properties.

最近，通过数值和实验研究了一种新型的减小波束截面（RBS）连接，称为“管状Web RBS（TW-RBS）”。TW-RBS连接是通过在梁式塑料铰链的理想位置用管子或管子代替腹板的一部分来进行的。本文旨在使用ABAQUS有限元软件对循环位置下管的位置，直径和厚度等关键因素对连接滞后行为的影响进行数值研究。首先，将模型用于验证目的，与实验结果具有良好的相关性。然后，通过改变关键参数定义14个模型，并对其进行循环加载。研究了这些因素对连接行为的影响，以便发现在实施TW-RBS连接或故意使用TW-RBS中的其他管道期间可能出现的缺陷的后果。根据结果​​，管的位置是TW-RBS连接行为中最敏感的因素，其位置不正确会导致设计不可靠，在不可预测的区域可能形成塑料铰链以及连接区域可能发生故障。相反，管的直径和厚度对能量耗散的影响可忽略不计，这主要取决于光束截面的特性。管的位置是TW-RBS连接行为中最敏感的因素，其位置不正确会导致设计不可靠，在不可预测的区域可能形成塑料铰链，以及连接区域可能发生故障。相反，管的直径和厚度对能量耗散的影响可忽略不计，这主要取决于光束截面的特性。管的位置是TW-RBS连接行为中最敏感的因素，其位置不正确会导致设计不可靠，在不可预测的区域可能形成塑料铰链，以及连接区域可能发生故障。相反，管的直径和厚度对能量耗散的影响可忽略不计，这主要取决于光束截面的特性。