微细耗能颗粒对调频型颗粒阻尼器减震效果影响研究

发布时间：2018-05-28 22:23

本文选题：框架结构 + 调频型颗粒阻尼器　；参考：《振动与冲击》2017年13期

【摘要】：为明确调频型颗粒阻尼器(Tuned Particle Damper,TPD)减震效果的关键影响因素和附加微细耗能颗粒对土木工程领域用调频型颗粒阻尼器减震效果的影响,以某钢筋混凝土框架结构为原型,设计制作了1∶30的缩尺试验模型及可用于该试验模型的调频型颗粒阻尼器,基于选定的TPD参数,通过在阻尼器腔体中附加不同质量的微细耗能铁粉颗粒,利用振动台试验对附加微细耗能颗粒前后调频型颗粒阻尼器减震效果的变化进行了研究。结果表明:依据设计的TPD附加微细耗能颗粒后仍能较有效降低结构在地震作用下的位移响应;激励强度是影响其控制效果的关键因素,随着激励强度的增加,附加微细耗能颗粒TPD的控制效果趋于提高;附加微细耗能颗粒后TPD的减震效果略有降低,土木工程领域颗粒与腔体间相对运动提供的调谐作用是影响TPD减震效果的重要因素。
[Abstract]:In order to clarify the key influence factors of the Tuned Particle Damper (TPD) damping effect and the effect of additional micro energy dissipation particles on the damping effect of the FM type particle dampers in the civil engineering field, a 1: 30 scale test model is designed and produced in a reinforced concrete frame structure and can be used for the test model. The type of FM type particle dampers, based on the selected TPD parameters, are used to attach different quality micro energy dissipating iron powder particles in the cavity of the damper. The vibration table test is used to study the change of the damping effect of the FM type particle dampers before and after the additional micro energy dissipation particles. The results show that the fine energy dissipation particles are added to the designed TPD. The displacement response of the structure under the earthquake action can still be reduced effectively. The excitation strength is the key factor affecting the control effect. With the increase of the intensity of the excitation, the control effect of the additional micro energy dissipation particles TPD tends to be improved, and the damping effect of TPD is slightly reduced after additional fine energy dissipation particles, and the relative between the particles and the cavity in the civil engineering field is relative. The tuning effect of motion is an important factor affecting the damping effect of TPD.
【作者单位】：北京工业大学工程抗震与结构诊治北京市重点实验室;
【基金】：国家自然科学基金项目(51378039;51421005;91315301-03) 北京市教委科技计划面上项目(KM201110005021)
【分类号】：TU352.1

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