Multiple-span bridge support system for vehicles with high braki

Details Multiple-span bridge support system for vehicles with high braki Multiple-span bridge support system for vehicles with high braki

1985-08-27

1986-09-09

Friedman, Carl D.

Static structures (e.g., buildings)

Tensioned or flexed sheet facing

52251, E04C 310

Patent

active

046101179

ABSTRACT:
In a multi-span bridge support system, the superstructure includes a row of elongated single-span girders arranged end-to-end and supported at their ends on vertical support columns. At least two adjacent girders in a row are provided with fixed bearings at the juxtaposed ends over a common support column. The opposite ends of the girders are mounted on horizontally movable bearings. The location of the fixed bearing and the common support column forms a fixed point. At the fixed point the ends of the girders are notched so that the vertical and horizontal surfaces within the notched region face corresponding surfaces on the top of the support column. A vertical bearing for transmitting horizontal forces extending in the elongated direction of the girders, is located between the top of the support column and the juxtaposed vertical surface within the notched region of the adjacent girders. Tension members, extending perpendicularly to and through the vertical surfaces on which the vertical bearings are located, are fixed to the girders. The tension members extend through the support column and the girders without any bonding action therewith. Further, a horizontal bearing is mounted between the top of the support column and the horizontal extending surfaces within the notched region of the girders.

REFERENCES:
patent: 2373409 (1945-04-01), Myer
patent: 3892096 (1975-07-01), Macchi
patent: 3903667 (1975-09-01), Zetlin

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