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通过单层钢框架振动台试验,研究简谐波激励下颗粒阻尼器的附加颗粒质量比、填充率、颗粒粒径、数量、材料,激励强度和频率等参数对颗粒阻尼器性能的影响。试验结果表明:附加颗粒阻尼器的单层钢框架在简谐波激励下减振控制效果良好;质量比和填充率是影响颗粒阻尼器性能的两个重要参数,较大质量比、较大填充率时阻尼器减振控制效果好;颗粒粒径、数量、材料对阻尼器性能影响不大;激励频率接近和大于结构基频时,颗粒阻尼器可以很好地抑制结构响应;颗粒阻尼器性能随激励强度增加先提高后趋于稳定;附加颗粒比附加相同质量的配重更能有效控制结构的共振响应。
Through the vibration table test of single steel frame, the influence of additional particle mass ratio, filling rate, particle size, number, material, excitation intensity and frequency on the performance of particle damper under simple harmonic excitation was studied. The experimental results show that the damping effect of the single-story steel frame with additional particle damper under harmonic excitation is good. The mass ratio and filling rate are two important parameters that affect the performance of the particle damper. The larger the mass ratio, the larger the filling When the frequency is close to and greater than the fundamental frequency of the structure, the particle damper can restrain the structural response well; the performance of the particle damper With the increase of the excitation intensity, the first increase tends to be stable; the additional particles can effectively control the resonance response of the structure than adding the same weight.