| abstract |
An anti-seismic bearing made up of a plurality of rigid plates and viscoelastic flexible plates laminated alternately, said flexible plates being made of a material characterized by that the hysteresis ratio at 100% deformation at 25 DEG C. is 0.15 to 0.60, the loss tangent (tan delta ) at 0.01% deformation, 5 Hz, at 25 DEG C. is 0.010 to 0.194, and the ratio E(-10)/E(30) is 1.0 to 3.0, where E(-10) is a storage modulus at 0.01% deformation 5 Hz, at -10 DEG C. and E(30) is a storage modulus at 0.01% deformation, 5 Hz, at 30 DEG C. An assembly composed of low-damping anti-seismic bearings and high-damping anti-seismic bearings arranged in parallel such that the anti-seismic bearings support the vertical load and undergo elastic deformation in the horizontal direction. |