MECHANICAL PROPERTIES ANALYSIS AND EXPERIMENTAL RESEARCH ON MAGNIFIED VISCOUS DAMPING WALL

An amplified multi-lever parallel viscous damping wall was proposed. Given its structure and force characteristics, vertical pulling effect, the damping force and energy dissipation theoretical formulas of both common and magnified viscous damping walls were analyzed, as well as its deformation and energy dissipation. An experimental model of both common and magnified viscous damping walls with triple displacements was designed to carry out a reciprocating loading test under the action of a sine wave. The hysteresis curve of viscous damping wall was verified by the comparison between a theoretical curve and the experimental curve under different experimental conditions. Furthermore, the hysteretic curve of the amplified viscous damping wall was rounder than that of a normal damping wall, and the energy dissipation was more significant under the same displacements. Therefore, the three-storey concrete frame structure was used as the calculation model for seismic analysis, which confirms the influence of vertical pulling was effective to the structure of a magnified viscous damping wall.