Abstract The S elf- C entering En ergy- A bsorbing R ock i ng C o re with friction spring damper (denoted as the SCENARIO system) is a novel steel structural system that can achieve excellent self-centering performance in low-rise buildings. This research presents the physical tests and design procedure of the SCENARIO system, which consists of a rocking core (RC) and two friction spring dampers (FSDs). The basic mechanical response of the friction ring spring group included in the FSD is first described through a preliminary experimental study. Three repeated rounds of reverse cyclic load tests of the SCENARIO system are conducted. The test results show reliable and stable self-centering hysteretic behavior. After removing the applied force at the maximum loading roof drift ratio of 5%, the SCENARIO specimen achieved near-zero residual drift. During the entire loading process, the RC can remain elastic. The two FSDs included in the SCENARIO specimen show yield force reduction and stiffness increase under three repeated rounds of cyclic loading. However, there was no damage to any components in the FSD after the tests. Following the experimental study, the finite element model of the SCENARIO system is introduced and verified. Then, nonlinear dynamic analyses (NDA) are performed to determine the influences of the yield force reduction and stiffness increase of the FSD on the seismic performance of the proposed system. Finally, a performance-based design procedure is proposed using the direct displacement design method for the SCENARIO system. The results from the NDA indicate that the SCENARIO system designed via the proposed design procedure can achieve the desired performance objective and excellent self-centering behavior under the maximum considered earthquakes.

中文翻译：

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带摩擦弹簧阻尼器的自定心吸能摇摆核心系统：实验、建模与设计

摘要 带摩擦弹簧减振器的自进能量—吸震系统（简称SCENARIO系统）是一种新型钢结构体系，可在低层建筑中实现优良的自定心性能。本研究介绍了 SCENARIO 系统的物理测试和设计程序，该系统由一个摇摆核心 (RC) 和两个摩擦弹簧阻尼器 (FSD) 组成。首先通过初步实验研究描述了 FSD 中摩擦环弹簧组的基本机械响应。对 SCENARIO 系统进行了三轮重复的反向循环负载测试。测试结果显示出可靠和稳定的自定心滞后行为。在以 5% 的最大加载顶板漂移率去除施加的力后，SCENARIO 试样实现了接近零的残余漂移。在整个加载过程中，RC 可以保持弹性。SCENARIO 样本中包含的两个 FSD 在三轮重复循环加载下显示屈服力降低和刚度增加。然而，测试后FSD中的任何组件都没有损坏。在实验研究之后，引入并验证了 SCENARIO 系统的有限元模型。然后，进行非线性动力分析 (NDA)，以确定 FSD 的屈服力降低和刚度增加对所提出系统的抗震性能的影响。最后，使用直接位移设计方法为 SCENARIO 系统提出了基于性能的设计程序。