Lightweight modular, truss-deck bridge system

Details Lightweight modular, truss-deck bridge system Lightweight modular, truss-deck bridge system

1977-12-15

1978-10-17

Byers, Nile C.

Bridges

Truss

Arrangement

14 17, 14 73, 52796, 52797, E01D 1500

Patent

active

041200659

ABSTRACT:
A modular bridge system constructed of parallel, side-by-side bridge modules constructed of components made from large pitch and depth corrugated plate. Each module has an upper chord plate, which ultimately defines the corresponding part of the bridge deck, a spaced apart, parallel lower chord plate and an intermediate, sinusoidal support structure defined by webs which have a width substantially equal to the width of the chord plates so as to define a continuous lateral support for the upper chord plates at intermediate points over the length thereof. Load distributing ribs secured to the underside of the chord plates only are placed at unsupported portions of the upper chord plates between attachment points for the webs and have a width substantially equal to the combined width of all modules to tie the modules to each other and to distribute vehicular (point) loads over a relatively wide lateral extent of the chord plates. Also disclosed is a high strength mounting of lateral guard rails for the bridge, a method for constructing and erecting the modules, and the incorporation of the modules in more intricate bridge structures such as arch-type bridges.

REFERENCES:
patent: 2017832 (1935-10-01), Hovey
patent: 3037592 (1962-06-01), Shipley
patent: 3066771 (1962-12-01), Wolchuk
patent: 3104194 (1963-09-01), Zahorski
patent: 3110049 (1963-11-01), Nagin
patent: 3302361 (1967-02-01), Oudheusden
patent: 3388516 (1968-06-01), Thitzen
patent: 3849237 (1974-11-01), Zetlin

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