Title:
橋梁用ゴム支承
Document Type and Number:
Japanese Patent JP7231940
Kind Code:
B2
Abstract:
To allow shear deformation of rubber shoes when an earthquake motion of level 2 or lower occurs, and to restrain shear deformation of rubber shoes when an unexpected earthquake motion exceeding level 2 or ground deformation occurs in order to prevent the rubber shoes from breaking.SOLUTION: In a rubber bearing 10 for bridge installed between an upper structure and a lower structure, and including an upper shoe 11 fixed to a lower surface of the upper structure, a lower shoe 12 fixed to the lower structure, and a rubber shoe 13 provided between the upper shoe 11 and the lower shoe 12, side blocks 21, 22 are provided on both sides holding the rubber shoe 13 along the lower shoe 12 in the bridge axis direction and the direction perpendicular to the bridge axis direction at a distance d, being approximately equivalent to the maximum design displacement during an earthquake assuming a level-2 earthquake motion of the rubber shoe from the upper shoe 11. The lower shoe 12 is fixed to an upper surface of a base plate 16 fixed to the lower structure by bolts 17. The bolts 17 are broken by an earthquake motion exceeding level 2.SELECTED DRAWING: Figure 1
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Inventors:
Yasuhisa Hishishima
Application Number:
JP2020005601A
Publication Date:
March 02, 2023
Filing Date:
January 17, 2020
Export Citation:
Assignee:
Kawakin Core Tech Co., Ltd.
International Classes:
E01D19/04; E01D22/00; F16B31/02; F16B43/00; F16F7/00; F16F7/08; F16F15/02; F16F15/08
Domestic Patent References:
| JP2017014748A | ||||
| JP8170310A | ||||
| JP2003049408A | ||||
| JP2006342494A | ||||
| JP8246418A |
Attorney, Agent or Firm:
Hirotaka Hayama
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