In this paper, a novel adaptive viscous damping wall (A-VDW) system was developed to achieve a two-stage seismic mitigation. The A-VDW combines a viscous damping wall with lead dampers through working gaps. The A-VDW provides only damping but no extra stiffness for moderate or minor earthquakes, while for severe earthquakes, both stiffness and energy dissipation are provided. A numerical model which captures the displacement—force relation features at different working stages was proposed for the A-VDW; then, dynamic tests on a scaled A-VDW under different loading frequencies and amplitudes were conducted to verify the proposed physical configuration and numerical model. The two-stage seismic mitigation effect of the proposed A-VDW is evaluated in single-degree-of-freedom (SDOF) systems. Finally, a performance-based design method considering velocity exponent was proposed and also validated.

本文开发了一种新型的自适应粘性阻尼墙（A-VDW）系统，以实现两阶段的减震。A-VDW通过工作间隙将粘性阻尼壁和铅阻尼器结合在一起。对于中等或轻微地震，A-VDW仅提供阻尼，但不提供额外的刚度，而对于严重地震，则提供了刚度和能量耗散。对于A-VDW，提出了一个捕获不同工作阶段位移-力关系特征的数值模型。然后，在不同的加载频率和幅度下对标度A-VDW进行了动态测试，以验证所提出的物理配置和数值模型。两级地震在单自由度（SDOF）系统中评估了拟议的A-VDW的缓解效果。最后，提出并验证了一种基于速度指数的基于性能的设计方法。