US 12,448,741 B2
Seismic reinforcement device for bridge
Hiroshi Takemura, Tokyo (JP); Yuki Andoh, Tokyo (JP); Yoshisato Hiratsuka, Tokyo (JP); Hironori Ogura, Tokyo (JP); and Yuichi Goda, Tokyo (JP)
Assigned to SHO-BOND CORPORATION, Tokyo (JP); and BRIDGE BEARING MANUFACTURE CO., LTD., Tokyo (JP)
Appl. No. 17/791,876
Filed by SHO-BOND CORPORATION, Tokyo (JP); and BRIDGE BEARING MANUFACTURE CO., LTD., Tokyo (JP)
PCT Filed Dec. 22, 2021, PCT No. PCT/JP2021/047596
§ 371(c)(1), (2) Date Jul. 8, 2022,
PCT Pub. No. WO2022/209066, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 2021-057478 (JP), filed on Mar. 30, 2021.
Prior Publication US 2024/0141603 A1, May 2, 2024
Int. Cl. E01D 19/04 (2006.01)
CPC E01D 19/042 (2013.01) 13 Claims
OG exemplary drawing
 
1. A seismic reinforcement device for a bridge to be added between a substructure and a superstructure of an already-existing bridge to increase its seismic capacity, the seismic reinforcement device comprising:
a first member having a projecting portion; and
a second member having a depressed portion,
wherein:
the projecting portion and the depressed portion are freely fitted to and engaged with one another to constitute a shear key and thereby resist a horizontal force in a state in which the first member is coupled to and supported by one of the substructure and the superstructure and the second member is coupled to and supported by the other of the substructure and the superstructure; and
a spacer having a predetermined thickness is interposed between the first member and the second member or between the superstructure and the seismic reinforcement device such that the spacer suppresses dropping of the superstructure and reduces a level difference between the substructure and the superstructure.