新型装配墙式质量调谐阻尼器抗震性能研究

Seismic performance of a new type of assembled wall tuned mass damper

调谐质量阻尼器(tuner mass damper,TMD)是现阶段公认有效的结构振动控制设施,但传统TMD存在占用建筑大量使用空间、增加建造成本、构配件不可更换的问题。该研究设计了一种装配墙式调谐器阻尼器(wall-tuned mass damper,WTMD),该墙体可充分利用传统墙体质量,节约使用空间,装配式的构造可实现TMD参数的调节和配件的及时更换。为了使减震TMD墙具有更好的减震性能,建立了TMD结构耦合运动方程,分析得到其理论参数最优值,并通过对比无控结构和墙式TMD结构的传递函数,对理论减震性能进行验证,最后进行振动台试验进一步验证其减震效果。结果表明,装有新型装配墙式减震TMD的受控结构,自振频率较无控结构有所降低,延长了结构振动周期。减震TMD墙体具有较好的减震作用,且随着加速度峰值增加,减震效果越发明显。

The tuner mass damper(TMD)is currently recognized as an effective structural vibration control facility,but traditional TMDs have the problems of occupying a large amount of building space,increasing construction cost,and being of irreplaceable components.A wall-tuned mass damper(WTMD)was designed,which can make full use of the traditional wall quality and save space.The assembly type of structure can realize the adjustment of TMD parameters and the timely replacement of accessories.In order to make the shock-absorbing TMD wall have better shock-absorbing performance,the coupled motion equation of the TMD structure was established,and the optimal values of its theoretical parameters were obtained by analysis,and the transfer functions of the uncontrolled structure and the wall-type TMD structure were compared to verify its theoretical shock-absorbing performance,and finally a shaking table test was carried out to further verify its damping effect.The results show that the natural frequency of the structure equipped with the new type of assembled wall TMD is lower than that of the uncontrolled structure,and the structure vibration period is prolonged.The shock-absorbing TMD wall has a good shock-absorbing effect,and as the acceleration peak increases,the shock-absorbing effect becomes more obvious.