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Viscous inertial mass damper (VIMD) for seismic responses control of the coupled adjacent buildings

机译：用于耦合相邻建筑物的地震响应控制的粘性惯性质量阻尼器（Vimd）

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摘要

Many research studies have focused on a novel kind of damper involved with an inertial/gyro mass component, called the inertial mass damper (IMD). Different realizations of the IMD share common standard features: a sizeable apparent mass and the pseudo-negative dynamic stiffness. The connected control method (CCM) has been proven effective for mitigating vibration between adjacent flexible structures. This paper explores the efficacy of using an IMD in parallel with a viscous damper (termed VIMD) configured in the sky bridge to control the vibration of two adjacent towers under random earthquake excitation. First, numerical models of two buildings are developed using a Timoshenko beam model, which can accommodate both bending and shear deformation. Key damper parameters are explored through a parametric study. Then, stochastic optimization is performed to determine optimum damper parameters and the most effective configuration. The optimization results are analyzed in detail, and guidelines for the damper configuration are recommended. By comparing the optimal control performance between the VIMD and traditional viscous damper (VD), the following conclusions can be drawn: due to its pseudo-negative stiffness characteristics and large damper force, the VIMD can achieve better control performances for a wide range of the axial stiffness of the sky bridge; the VIMD requires a smaller damping coefficient and axial stiffness, which can result in smaller damper sizes and member sections of the sky bridge. Therefore, the VIMD is demonstrated to be a useful alternative for engineering practice in CCM vibration mitigation strategies.
机译：许多研究研究都集中在一种与惯性/陀螺质量组件相关的新颖的阻尼器，称为惯性质量阻尼器（IMD）。 IMD的不同实现共享常见标准特征：尺寸的表观质量和伪负动态刚度。已证明连接的控制方法（CCM）对于相邻的柔性结构之间的振动有效。本文探讨了使用IMD与天空桥中配置的粘性阻尼器（称为Vimd）平行的功效，以控制随机地震激励下两个相邻塔的振动。首先，使用Timoshenko梁模型开发了两栋建筑物的数值模型，可以适应弯曲和剪切变形。通过参数研究探讨了关键阻尼参数。然后，执行随机优化以确定最佳阻尼参数和最有效的配置。详细分析了优化结果，建议使用阻尼器配置的指导。通过比较ViMD和传统粘性阻尼器（VD）之间的最佳控制性能，可以绘制以下结论：由于其伪负刚度特性和大阻尼力，因此Vimd可以实现更好的控制性能天空桥的轴刚度; Vimd需要较小的阻尼系数和轴向刚度，这可能导致天空桥的较小阻尼尺寸和构件部分。因此，VIMD被证明是CCM振动缓解策略中工程实践的有用替代品。

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