To assess the seismic performance of buildings reinforced by steel moment frames using built-in or external indirect joints, shear strength of indirect joints to be applied to computer-aided structural numerical models is required. However, Korea’s earthquake provisions do not provide the specified shear strength of indirect joints of specific seismic strengthened methods. In this study, an experiment was conducted to investigate the shear strength of indirect joints in the built-in and external seismic strengthened methods with specific indirect joints. It was confirmed that the shear strength of the indirect joint was determined to be a conservative value among the interfacial shear force of the post-installed anchor and the shear strength of the load transfer part. It was also confirmed that the indirect joint exhibited the same shear strength regardless of the type of seismic reinforcement, and the shear strength of the indirect joint was provided. In addition, a method of calculating the shear strength depending on the number of load transfer parts and the thickness of indirect joints was proposed.

为了评估使用内置或外部间接节点的钢框架加固的建筑物的抗震性能，需要将间接节点的抗剪强度应用于计算机辅助结构数值模型。但韩国的地震规定并没有规定间接缝抗剪强度的具体抗震加固方法。本研究对特定间接缝的内置式和外置式抗震加固方法中间接缝的抗剪强度进行了试验研究。经证实，间接接头的抗剪强度确定为后装锚杆界面剪力和荷载传递部分抗剪强度中的保守值。还证实，无论抗震加固类型如何，间接接头都表现出相同的抗剪强度，并提供了间接接头的抗剪强度。此外，还提出了一种根据载荷传递部分的数量和间接接头的厚度来计算抗剪强度的方法。