The shear steel panel damper (SPD) is gradually used in the seismic design owing to the stable energy dissipation capacity. To date, most shear panels in the conventional SPD are welded with stiffeners against excessive local buckling. In this study, a duplex assembled I-shaped steel panel damper strengthened by CFRP sheets (C-DAISPD) is proposed to avoid the failure owing to undesired cracks in the web plate. A hot-rolled H-beam is processed to an energy dissipation unit with the web strengthened by the carbon fiber reinforced polymer (CFRP) sheets and stiffeners welded to the flanges. Then, two units are assembled back-to-back to form a damper. The C-DAISPD is developed to enhance the effect of buckling restraint, the ductility, and the sustainable stable energy absorption. Quasi-static tests of three specimens and numerical models were conducted to investigate the strengthening effect on the damper. The results indicated that the CFRP sheets benefited the hysteretic performance and the ductility of the C-DAISPD. The bearing capacity and the energy dissipation capacity could be significantly improved with the four-edge weld connection and the increase in the width of the web.

由于具有稳定的能量消散能力，抗剪钢板阻尼器（SPD）逐渐用于抗震设计中。迄今为止，常规SPD中的大多数剪力板都焊接有加强筋，以防止过度的局部屈曲。在这项研究中，提出了一种用CFRP薄板（C-DAISPD）加固的双工I形钢板阻尼器，以避免由于腹板中不希望有的裂纹而导致的失效。将热轧H型钢加工成能量消散单元，并通过碳纤维增强聚合物（CFRP）板和焊接到法兰的加劲肋来加强腹板。然后，将两个单元背对背组装以形成阻尼器。C-DAISPD的开发旨在增强屈曲约束，延展性和可持续稳定能量吸收的效果。进行了三个试样的准静态试验和数值模型，以研究对减震器的加固效果。结果表明，CFRP片材有利于C-DAISPD的滞后性能和延展性。通过四边焊接连接和腹板宽度的增加，可以显着提高承载能力和能量耗散能力。