Mounting structure and method for viscosity system damping wall

A structure for installing a viscous vibration-damping wall between a lower-floor girder and an upper-floor girder, said viscous vibration-damping wall having a housing with an upper end open, an intermediate plate inserted in said housing through said open upper end, a viscous material or a viscoelastic material disposed in a gap portion between said housing and said intermediate plate, said housing having a base plate, a pair of steel side plates uprightly set on said base plate, and a pair of flange plates disposed on both lateral ends of said pair of side plates, respectively;

• said lower-floor girder having a first flange, and said upper-floor girder having a second flange, said structure comprising base-plate connecting hole portions provided on said first flange of said lower-floor girder, a pair of flange connecting plates provided on said first flange of said lower-floor girder, respectively, and a gusset plate attached to said second flange of said upper-floor girder, said intermediate plate being directly connected to said gusset plate, said base plate-connecting hole portions being connected to said base plate by high-strength bolts, and said pair of flange connecting plates being connected to said pair of flange plates by high-strength bolts.