This paper presents an innovative gear‐driven rotation‐amplified rubber viscoelastic damper (GRRVD) to reduce the seismic shift responses of beam‐column connections in frame structures. Based on the principle of gear transmission, the damper can amplify the rotational deformation of the beam‐column joints of frame structures according to actual engineering needs and give full play to the energy dissipation capacity of rubber viscoelastic materials. First, the design philosophy, basic construction, working mechanism, and outstanding features of this damper are introduced. Then, cyclic loading test is carried out to study the influence of rotational deformation and loading frequency on the mechanical properties of the fabricated GRRVD. Additionally, a mechanical model which can precisely simulate the hysteretic characteristics of the damper is derived and then verified by numerical simulation. Finally, a nonlinear time history analysis is performed on a six‐story steel frame for three cases: no dampers, dampers without deformation amplification, and dampers with deformation amplified by a factor of 2.5. The results show that the control effect of the damper can be improved by two to four times by amplifying the rotational deformation response at the beam‐column joint by 2.5 times.

中文翻译：

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齿轮驱动旋转放大型橡胶粘弹性阻尼器的性能及其对框架结构的振动控制研究

本文提出了一种创新的齿轮驱动旋转放大橡胶粘弹性阻尼器（GRRVD），以减少框架结构中梁柱连接的地震位移响应。根据齿轮传动原理，阻尼器可以根据实际工程需要放大框架结构梁柱节点的旋转变形，并充分发挥橡胶粘弹性材料的耗能能力。首先，介绍该风门的设计理念，基本结构，工作机理和突出特点。然后，进行循环载荷试验以研究旋转变形和载荷频率对所制造GRRVD力学性能的影响。另外，推导了可以精确模拟减振器滞回特性的机械模型，然后通过数值模拟对其进行了验证。最后，在六层钢框架上进行了三种情况的非线性时程分析：无阻尼器，无变形放大的阻尼器和变形放大2.5倍的阻尼器。结果表明，通过将梁柱节点的旋转变形响应放大2.5倍，可以将减振器的控制效果提高2至4倍。