结构顶部TMD系统采用隔震部件的减震研究

根据工程结构风振控制中应用较多的调谐阻尼减振机理，以地震作用下的减震控制为目的，提出在顸部TMD系统中采用隔震部件的方法，利用橡胶支座提供恢复力、利用滑动摩擦支座提供阻尼消能，以适应局部大变形要求。进一步对该体系在地震反应控制中的吸震效果进行了理论研究和编程计算分析，其中调谐减振子结构采用小比例附加质量。结果表明，该体系对地面地震动反应具有一定的减震效果，当TMD系统的基本周期接近某个模态周期时，调谐部分吸收地震能量较大，对主体结构具有较好的减震效果。特别当主体结构较规则、其地震反应是以基本振型反应为主的窄频反应时，减震效果更好。这些结果对结构调谐减震研究和应用具有一定意义。

Researches on Response Reduction Control of Structures with TMD Using Isolation Components on the TOP

Based on mechanism of the TMD system, and aimed at seismic response reduction control, a new method is put forward to use seismic isolation components in TMD systems, which supplies restoring force by means of rubber bearings and damping force by sliding bearings to accommodate to local large deformation. Furthermore, theoretical and numerical programme analyses are carried through to study response reduction characteristics of the method over small mass ratios. Analytical results show that the method exhibits efficiency, and it is more efficient when the period of TMD is close to certain mode period, especially when main structures are regular and responses are narrowband dominated by basic mode effect. These results mean significancy in the later research and application of tuned svstems.