Antiseismic stop device for bridge and viaduct girder structures

Details Antiseismic stop device for bridge and viaduct girder structures Antiseismic stop device for bridge and viaduct girder structures

1986-01-30

1988-01-26

Leppink, James A.

Bridges

Truss

Arrangement

52167, 403 26, E01D 1908

Patent

active

047208821

ABSTRACT:
An antiseismic stop device for girder structures of bridges, viaducts and the like, in which said girder structure is simply resting on the piers, said device comprising separate stop means, one for each girder structure, respectively at a point corresponding to the movable girder and to the fixed girder, said means being placed centrally with respect to the intrados of the girder structure, and providing both means that are integral with the girder structure and means that are integral with the head of the pier, said means being coupled so that they can run through pin means and forming as a whole a member which is capable of absorbing the relative motions between the girder structure and the pier both in the static and the dynamic condition, and of counteracting the seismic shock just at the very moment it first surges up.

REFERENCES:
patent: 3806975 (1974-04-01), Fyfe
patent: 4188681 (1980-02-01), Tada et al.
patent: 4363149 (1982-12-01), Kondo et al.
patent: 4462955 (1984-07-01), Albin et al.
patent: 4605106 (1986-08-01), Fyfe et al.

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