Bridges – Pier
Patent
1975-01-02
1976-09-14
Byers, Jr., Nile C.
Bridges
Pier
61 45D, 14 161, E01D 1902
Patent
active
039797872
ABSTRACT:
For supporting bridge structures and like heavy-weight rigid structures upon displacement thereof, at more points than those giving statically determined bearing forces, the rigid structure is placed on a plurality of hydraulic jacks distributed beneath it and provided with sliding means at their upper ends facing the structure. The jacks are so coupled hydraulically in groups that the bearing force is uniformly distributed in each group independently of whether there are variations in height between those surfaces of the rigid structure which are in contact with the sliding means at the upper ends of the jacks.
Upon displacement of bridge structures and like heavy-weight rigid structures supported on a plurality of sliding means distributed in groups beneath it each of the sliding means in at least one group is associated with a jack for displacement of the structure, the jacks at the sliding means in said group cooperating hydraulically at the displacement.
REFERENCES:
patent: 809071 (1906-01-01), Motley
patent: 1827921 (1931-10-01), White
patent: 2907172 (1959-10-01), Crake
patent: 2960833 (1960-11-01), Hayward
patent: 3097829 (1963-07-01), Seddon
patent: 3564857 (1971-02-01), Von Hippel
patent: 3689953 (1972-09-01), Markakis
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