Bridge deck system

Details Bridge deck system Bridge deck system

1993-11-24

1995-10-17

Britts, Ramon S.

Bridges

Deck

Joint

522237, E01D 1912

Patent

active

054578396

ABSTRACT:
A reduced-weight bridge deck having a plurality of areas which are void of concrete to provide a lower dead load force and to reduce the product costs. The bridge deck includes structural support bars, post-tensioning ducts and a concrete component. Concrete component has spaced downwardly projecting protrusions which laterally distribute forces and permit the ability of providing areas void of concrete therebetween. The post-tensioning ducts are located within and extend through the downwardly projecting protrusions. The strength of deck is achieved by placing the tendons within the ducts. The tendons are tightened and anchored to the ends of the deck to prestress the concrete component. The unique section design and the post-tensioning eliminates the need for reinforcing bars which can deteriorate and contribute to structural failures. Methods for manufacturing the bridge deck from precast panels and by cast-in-place sections are also disclosed.

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Paul F. Csagoly and William N. Nickas, "Florida Bulb-Tee and Double-Tee Beams", Concrete International, pp. 18-23, Nov. 1987.
Advertisement, Southern Prestressed Inc., "New Double Tee Bridge System", publication date unknown.

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