| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber laminate which has a small bearing pressure dependence of horizontal stiffness, whose modulus of elasticity in shear dose not reduce even under a high bearing pressure, and which is suitable for various oscillation energy absorbing devices, especially for a base isolation device. SOLUTION: This is a rubber laminate reciprocally laminated with a rubber layer and a hard plate, the rubber layer being made of a rubber composition in which the ratio of a rupture energy to half the product of a rupture strength and a rupture elongation is not less than 0.4, and the ratio between the fifth modulus in a 100% repetition deformation tensile test by autograph and a static modulus of elasticity in shear Gs is not less than 1.4. |
