多重调质阻尼器(MTMD)是由多个具有不同频率、不同质量或不同阻尼的调质阻尼器构成的动力吸振器群。文章采用频域分析方法考虑TMD在多自由度结构中的位置,推演了具有MTMD多自由度结构振动受控振型广义坐标的频率响应方程,以一座大跨斜拉桥为算例,进行了MTMD参数优化设计,计算结果表明,在随机不平顺桥面条件下,MTMD能够有效减小结构对汽车荷载激励的动力响应。 Multiple quenching damper (MTMD) is a group of dynamic vibration absorber consisting of a plurality of quenching and damping dampers with different frequencies, different masses or different damping. Taking the position of TMD in multi-degree-of-freedom structure by frequency-domain analysis method, the frequency response equation of generalized coordinate system with MTMD multi-degree-of-freedom vibration-controlled vibration mode is deduced. Taking a long-span cable-stayed bridge as an example, The MTMD parameters are optimized and the results show that MTMD can effectively reduce the dynamic response of the structure to the vehicle load excitation under random uneven deck conditions.