Abstract Shear steel panel dampers (SPDs) dissipate energy mainly by the shear yielding deformation of steel plates. Currently, most SPDs are fabricated from low-yield-point steel plates at high costs. However, the absence of adequate buckling restraints leads to large out-of-plane deformation of the shear panel. Further, achieving buckling restraint using welding stiffeners results in the premature failure of SPDs owing to weld damage. Therefore, this paper proposes a duplex assembled I-shaped steel panel damper (DAISPD) that is based on a Q235 hot-rolled H-beam. Webs are holed diagonally, and flanges on one side are cut while stiffeners are welded to the other side flanges, forming a channel-like steel energy dissipation unit. Two channel-like units are assembled back-to-back as a damper dissipating energy through the shear yielding. Quasi-static tests of five specimens were designed to investigate the properties of the DAISPD. Subsequently, to supplement the test results, numerical analysis was performed using Abaqus FEA software, focusing on critical parameters and energy dissipation capacity. The results indicate that for two kinds of configurations, where only stiffeners are adopted, and where both stiffeners and connectors are installed to constrain the buckling, the proposed solution effectively provides an adequate restraint to the buckling of the webs. The configuration where only stiffeners are adopted is recommended. Further, significant parameters of the recommended configuration are determined. Finally, a concept restoring force model is proposed, and a design method for the bearing capacity is proposed based on the results of physical tests and numerical analysis.

中文翻译：

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双联组装工字型钢板阻尼器的研制

摘要 剪切钢板阻尼器（SPD）主要通过钢板的剪切屈服变形来耗散能量。目前，大多数 SPD 由低屈服点钢板以高成本制造。然而，缺乏足够的屈曲约束会导致剪切板出现较大的平面外变形。此外，使用焊接加强筋实现屈曲约束会导致 SPD 由于焊接损坏而过早失效。因此，本文提出了一种基于 Q235 热轧 H 型钢的双联组装工字钢板阻尼器 (DAISPD)。腹板对角开孔，一侧翼缘被切割，而加强筋焊接到另一侧翼缘，形成一个通道状钢耗能单元。两个通道状单元背靠背组装，作为阻尼器，通过剪切屈服耗散能量。设计了五个试样的准静态测试来研究 DAISPD 的特性。随后，为了补充测试结果，使用 Abaqus FEA 软件进行数值分析，重点关注关键参数和能量耗散能力。结果表明，对于仅采用加劲肋和同时安装加劲肋和连接件来约束屈曲的两种配置，所提出的解决方案有效地为腹板屈曲提供了足够的约束。推荐仅采用加劲肋的配置。此外，确定推荐配置的重要参数。最后，提出了概念恢复力模型，并基于物理试验和数值分析结果提出了承载力的设计方法。