Abstract Block Slit Dampers (BSDs) are recently developed metallic yielding dampers for passive structural control. This type of damping devices can provide designers with an option of using highly ductile systems, such as steel special moment resisting frames (steel SMRFs), in important structures located in regions of high seismicity. The aim of this study is to obtain a performance-based seismic design (PBSD) procedure for these devices, and to assess the seismic performance levels of low-rise steel SMRF equipped with BSDs using the endurance time (ET) dynamic analysis method. For this purpose, first, the simplified behavioral model of these devices was established based on the analysis of available experimental data. Afterwards, the effects of the geometric dimensions of the damper on its hysteresis behavior were investigated through a parametric study conducted using ABAQUS software. Next, based on the results of the parametric study, the design formulations were developed. In the next step, a step-wise guideline was developed for the PBSD of BSD devices used in a low-rise steel SMRFs. In this guideline, ET dynamic analysis method was used to reduce the calculation costs and complexities of PBSD. Then, a six-story steel SMRF equipped with BSD devices was designed using the developed guideline, and the seismic response of this structure was compared to that of a companion conventional SMRF without BSD devices. The results show that through the use of BSD devices, which have a unique secondary hardening portion in their hysteresis behavior, it becomes possible to satisfy performance objectives of flexible steel SMRFs in regions of high seismicity. In addition, like stiff lateral resisting systems, BSD devices can reduce the inter-story drift ratios (ISDRs) of steel SMRFs. Controlling the absolute floor accelerations (AFAs) and non-structural element damages also become easier with the use of BSD devices. These results indicate that BSD devices are hysteretic devices that are well suited for design and retrofit of flexible steel SMRFs. In the final part of the study, the ET analysis results were compared to the results obtained from a response history analysis (RHA) method conducted using a set of 22 scaled FEMA P695 far-field earthquake records. This comparison shows the suitability of ET method in PBSD of steel SMRFs equipped with BSD devices.

中文翻译：

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基于性能的带块缝阻尼器的低层钢特殊抗弯框架抗震设计与耐久性时间法评估

摘要 块狭缝阻尼器 (BSD) 是最近开发的用于被动结构控制的金属屈服阻尼器。这种类型的阻尼装置可以为设计人员提供在位于高地震活动地区的重要结构中使用高延展性系统的选择，例如钢特殊抗弯框架（钢 SMRF）。本研究的目的是为这些设备获得基于性能的抗震设计 (PBSD) 程序，并使用耐久性时间 (ET) 动态分析方法评估配备 BSD 的低层钢 SMRF 的抗震性能水平。为此，首先，基于对可用实验数据的分析，建立了这些设备的简化行为模型。然后，通过使用 ABAQUS 软件进行的参数研究，研究了阻尼器的几何尺寸对其滞后行为的影响。接下来，根据参数研究的结果，开发了设计公式。在下一步中，为低层钢 SMRF 中使用的 BSD 设备的 PBSD 制定了分步指南。本指南采用ET动态分析方法来降低PBSD的计算成本和复杂度。然后，使用开发的指南设计了配备 BSD 装置的六层钢 SMRF，并将该结构的地震响应与没有 BSD 装置的配套常规 SMRF 的地震响应进行了比较。结果表明，通过使用 BSD 设备，其滞后行为具有独特的二次硬化部分，在高地震活动地区满足柔性钢 SMRF 的性能目标成为可能。此外，与刚性横向抗力系统一样，BSD 设备可以降低钢 SMRF 的层间漂移率 (ISDR)。通过使用 BSD 设备，控制绝对地板加速度 (AFA) 和非结构元素损坏也变得更加容易。这些结果表明 BSD 设备是滞后设备，非常适合柔性钢 SMRF 的设计和改造。在研究的最后部分，将 ET 分析结果与使用一组 22 个按比例缩放的 FEMA P695 远场地震记录进行的响应历史分析 (RHA) 方法获得的结果进行比较。该比较显示了 ET 方法在配备 BSD 设备的钢 SMRF 的 PBSD 中的适用性。