【摘要】 将传统结构中填充墙与主体承重结构以刚度及阻尼元件连接,形成调谐质量减震(TMD)系统,通过在主结构中布置多榀TMD填充墙,构成多重质量调谐减震(MTMD)结构体系。为研究地震作用下该减震结构动力响应规律,合理设置各TMD与主结构连接件的力学参数,将主结构简化为串联多自由度模型,分析非耦合控制作用时主结构稳态响应频域传递函数及影响因素,并通过结构1/3比例模型振动台试验进行验证。结果表明,仅在三层设置填充墙TMD时,各层柱顶幅频响应曲线呈双峰特征,加速度峰值越小,填充墙TMD的调频作用越显著;而在二、三层同时设置填充墙TMD,输入地震波加速度峰值不同时,TMD调频作用亦不同。因此,填充墙TMD频域响应与TMD布置方式及输入地震波加速度幅值有关,结构系统调频控制作用会受输入地震波加速度峰值影响。更多还原

【Abstract】 An in-filled wall and a main structure are connected with stiffness and damping elements to form a vibration reduction system with a tuned mass damper(TMD) called an in-filled wall TMD vibration reduction system.If a main structure contains several such systems,it can be called an in-filled wall multi-TMD(MTMD) vibration reduction structure.In order to study the dynamic response law of this structure under earthquake,choosing resonably mechanical parameters of each TMD and each connected element,the main structure was simplified as a series MDOF model,its transfer function in frequency domain and influence factors for its steady response under non-coupling contnols were analyted and testified with a shake-table test of a model of 1 /3 scale.It was shown that when an in-filled wall TMD is set on the third floor of the main structure,the amplitude-frequency response curves of the column top of each floor appear features of double-peak and the peaks of accelerations are lower,the frequency tunning function of TMD is more remarkable;while in-filled wall TMDs are set on the top two floors,the frequency tunning function of TMD varies under different peaks of seismic acceleration;therefore,the frequency domain response of an in-filled wall MTMD structure is related to the placement of TMDs and the amplitude of input seismic wave;the control action of the frequency tunning function of the structure is affected by the amplitude of earthquake wave acceleration.更多还原