STUDIES ON RESPONSE CONTROL TECHNOLOGIES FOR BUILDING STRUCTURES ―Part 1 Performance Tests of the Viscous Damping Walls for Large Damping Structures―

摘要

The "Structural Response Control Technology" herein described is a new methodology which realizes structures having artificial large damping by the "Viscous Damping Wall(in brief VD-Wall)" . The VD-Wall is a wall-shaped powerful passive energy dissipator consisting of a pair of vertical steel plates filled with high ciscous fluid.This part reports the results of performance testss using full scale VD-Wallsconducted to grasp the damping characteristics of VD-Walls.The following facts were revealed;l)The viscous resistant force Qw generated in the VD-Wall can be represented by the sum of damping force Qd and restoring force Qk( Qw=Qd+Qk). The former Qd is proportional to the velocity gradient (dV/dy) raised to the α power，the latter Qk to the relative displacement(δ) raised to the (1+β)power.2)The value of exponent α is substantially constant regardless of the viscosity of fluid. And the value of β is also constant regardless of the viscosity.3)The damping capability of the VD-Wall during out-plane deformation is virtually the same as one when it is not deformed.