滞回摩擦型调谐惯质阻尼器结构隔震研究

Study on isolation of structure with hysteretic friction tuned inerter damper

本文研究一种新型非线性阻尼器——滞回摩擦型调谐惯质阻尼器(HFTID)在工程结构抗震控制中的应用。HFTID由调谐惯质阻尼器(TID)和滞回弹簧摩擦元件并联组成。首先通过谐波平衡方法推导了HFTID单自由度系统力与位移的传递率。然后对HFTID进行了最佳调谐参数优化,得到HFTID最优参数的近似表达式,比较了HFTID和TID振动控制系统的减振效果。结果表明,HFTID相比TID可以进一步降低振动控制系统的传递率。最后,以一栋多层隔震结构为例,将HFTID与TID的隔震效果进行了对比,结果表明,HFTID相比TID在降低地震响应峰值和均方根值方面具有更大优势,验证了HFTID在降低地震响应方面的有效性和实用性。HFTID在建筑和桥梁结构抗震、车辆悬挂系统和其他机械隔震问题上具有潜在的应用前景。

This paper studies the application of a new nonlinear damper,hysteretic friction tuned inerter damper(HFTID),in the seismic control of engineering structures.This HFTID is composed of a tuned inerter damper(TID)and hysteretic spring friction elements in parallel.Firstly,the transmissibility of force and displacement of the single-degree of freedom HFTID system is derived by harmonic balance method.Then the tuning parameters of the HFTID are optimized,and the approximate expression of the optimal parameters of the HFTID is obtained.The damping effects of HFTID and TID vibration control system are compared.The results show that the HFTID can further reduce the transmissibility of vibration control system compared with TID.Finally,taking a multi-storey isolated structure as an example,the isolation effect of the HFTID is compared with TID.The results show that the HFTID has greater advantages in reducing the peak value and root mean square value of seismic response than TID,which verifies the effectiveness and practicability of HFTID in reducing seismic response.HFTID has a potential application prospect for seismic isolation of buildings and bridges,vehicle suspension systems and other mechanical isolation problems.