Response control using inertial mass element which gets inertial force due to the relative acceleration is recently studied by many researchers. The authors have proposed a new seismic response control system, the tuned viscous mass damper (TVMD), composed of arranging viscous damping element and inertial mass element which has an apparent mass amplifying mechanism to obtain a large supplemental mass effect in parallel and connecting spring element in series. This paper shows the application of TVMD to a high-rised steel building structure and response control effect of this system.
