A NOVEL PASSIVE ENERGY DISSIPATION SYSTEM FOR FRAME CORE TUBE STRUCTURE
The classical outrigger cantilevering from the core tube or shear wall connected to the perimeter columns directly, which can make the perimeter columns participate in the overall bending resistance. Therefore, the lateral stiffness of the structure will get improved. A new energy dissipation system for such structural system is studied, in which the outrigger and perimeter columns are separate, and vertical viscous dampers are equipped between the outrigger and perimeter columns to make full use of the relative big displacement of these two components. The effectiveness of proposed system is evaluated by means of the modal damping ratio based on the proposed simplified model. Controllable outrigger damping system based on MR dampers and real time hybrid simulation are undergoing.