| 摘要 |
PROBLEM TO BE SOLVED: To compensate for drawbacks of both types of a bonding type and a non- bonding type, ensure an advantage, and improve spring performance by introducing (a) non-bounding layer(s) having a single layer or plural layers to upper and lower ends or an intermediate part of an bonding type laminated rubber supporting body. SOLUTION: A laminated rubber supporting body 1 is assembled in such a way that a part excepting upper and lower connecting steel plates 3a, 3a and rubber elastic plates 2x, 2x of upper and lower ends in a constituted elements of a laminated body 4 is vulcanized and bonded, the rubber elastic plates 2x, 2x of the upper and lower ends, the connecting steel plates 3a, 3a, and flange plates 5, 5 are laminated with each other at the least assembly process. In the supporting body 1, since there are a small number of the rubber elastic plate 2x formed as non-bounding type, an unstable phenomenon is not generated in a multiple layer base isolation supporting body of a non-bounding type, the rubber elastic plate 2x of the non-bounding type is deformed larger than a horizontal direction deformation having the degree to which hardening is generated by the rubber elastic plate 2 to be bonded, and thereby, hardening on a bonded part is released. It is thus possible to improve base isolation performance of large deformation, and it is also possible to prevent breakage. |
