AN innovative amplified viscously damped outrigger (AVDO) is newly proposed to improve the seismic damping effect of conventional viscousl damped outrigger (VDO) on super high-rise structures by mechanically increasing the displacement of the viscous damper (VD). To investigate the advantages of the damping effect on AVDO over VDO, the dynamic cyclic tests on VDO and AVDO were conducted to verify the feasibility of AVDO and superiority of AVDO over VDO. On this basis, six finite element models of a 258 m-high building with two types of damped outriggers placed at different heights were established and analyzed by dynamic time-history method. By comparing the seismic responses of numerical models, it is shown that upgrading VDO to AVDO can improve the damping efficiency of VDs and effectively expand the applicable damping placement in structural height, thus, the structure can achieve a better damping effect. An equivalent theoretical model of AVDO was established and validated by numerical analysis, which contributes to facilitating the modelling work and analysis of AVDO. However, experimental results showed that the outrigger deformation reduced the working displacement of VD seriously, indicating that the stiffness of the outrigger should be designed reasonably to withstand the damping force in motion. On this basis, the relationship between the working efficiency of VD and the stiffness ratio of outrigger to VD was derived and verified. To ensure the high work efficiency of the damper, the recommended stiffness limit of the outrigger supporting nonlinear VD was put forward, which fills a gap in the specification for practical applications.

为了提高超高层结构常规粘滞阻尼支腿的减震效果，提出了一种创新的放大粘滞阻尼支腿（AVDO），通过机械增加粘滞阻尼器（VD）的位移来提高超高层结构的减震效果。为考察阻尼效应对AVDO 相对于VDO 的优势，对VDO 和AVDO 进行了动态循环试验，以验证AVDO 的可行性和AVDO 相对于VDO 的优越性。在此基础上，建立了一座258 m高的建筑物在不同高度放置两种类型的阻尼支腿的6个有限元模型，并采用动态时程法进​​行了分析。通过比较数值模型的地震反应，结果表明，将VDO升级为AVDO可以提高VD的阻尼效率，有效扩大结构高度的适用阻尼布置，从而使结构达到更好的阻尼效果。通过数值分析建立并验证了AVDO的等效理论模型，有助于促进AVDO的建模工作和分析。但试验结果表明，支腿变形严重降低了VD的工作位移，说明应合理设计支腿的刚度以承受运动中的阻尼力。在此基础上，推导并验证了VD工作效率与支腿刚度比之间的关系。为保证阻尼器的高工作效率，