Bridgestone Corporation

Kajima Corporation

Toshikazu Yoshizawa

Yoshihide Fukahori

Akihiko Ogino

Shigenobu Suzuki

Hiromu Kojima

Masao Iizuka

Wataru Seki

Mitsuaki Maeda

Atsuhiko Yasaka

Yoshide Fukahori

Takeshi Suga

An anti-seismic rubber is made by laminating a plurality of rigid plates and flexible plates having viscoelastic properties alternatively. At least one of the flexible plates A has elasticity, i.e. magnitude of the stress corresponding to an arbitrary strain in a stress-strain curve, lower than the elasticity of other flexible plates B in a low strain zone, and in a high strain zone, elasticity of the flexible plate A is higher than the elasticity of the flexible plate B.

Anti-seismic rubber

An anti-seismic device which comprises anti-seismic rubber bearings and dampers arranged in parallel, the anti-seismic rubber bearing being formed by laminating a plurality of rigid hard plates and soft boards having a viscoelastic property one over another, the damper being composed mainly of a viscoelastic material having the physical properties (i) and (ii) defined below.

Anti-seismic device

There is provided an anti-seismic rubber bearing made up of a laminate structure formed by bonding a plurality of rigid plates having stiffness properties and a plurality of flexible plates having viscoelastic properties each other alternately, and flanges each attached to the upper and lower surfaces of the laminate structure, characterized by that the local strain is evenly distributed throughout the structure by lowering the local strain which occurs near the flanges.

Anti-seismic rubber bearing

Growing community of inventors

Tokyo, Japan

Toshikazu Yoshizawa