A numerical analysis model should consider the indirect connection’s shear strength to evaluate buildings’ seismically strengthened effect by embedded and perimeter steel moment frames with the indirect connection. The seismic design code for the Korean school facilities does not support the particular indirect connection’s design information, recommends to secure through the experiment. This paper investigates the shear strength of bolted indirect connections of the steel retrofit method per the experimental results. The bolted indirect connection for the embedded steel retrofit method dissipated most indirect connection energy, excluding the connection steel plate and post-installed anchors as flexural behavior. Regardless of the lack of concrete shear strength due to the post-installed anchors, it was not observed the cracks in the column. In contrast, the bolted indirect connection of the perimeter steel retrofit method was confirmed as the only vertical cracks due to the post-installed anchors in the column and the indirect connection. This indirect connection is that the post-installed anchors resisted the shear force as shear behavior. According to these experimental results, the shear-resistant capacity of bolted indirect connections of the embedded and perimeter steel retrofit methods was proposed.

数值分析模型应考虑间接连接的抗剪强度，以评估带有间接连接的嵌入式和周边钢矩框架对建筑物的抗震加固效果。韩国学校设施的抗震设计规范不支持特定的间接连接的设计信息，建议通过实验确保安全。本文根据实验结果研究了钢改造方法的螺栓间接连接的抗剪强度。预埋钢改造方法的螺栓间接连接耗散了大部分间接连接能量，不包括连接钢板和后安装锚作为弯曲行为。尽管由于后置锚杆而导致混凝土抗剪强度不足，但没有观察到柱子的裂缝。相比之下，由于柱中后置锚栓和间接连接，周边钢筋改造方法的螺栓间接连接被确认为唯一的垂直裂缝。这种间接联系是后安装的锚栓抵抗剪切力作为剪切行为。根据这些试验结果，提出了预埋钢和周边钢加固方法的螺栓间接连接的抗剪能力。