1992-08-14
1995-06-20
Britts, Ramon S.
Bridges
Arch
14 73, 14 771, E01D 2100
Patent
active
054251524
ABSTRACT:
A method of constructing a bridge using a two step composite construction process. In the first step, the region to be spanned is bridged with precast prestressed concrete elements that are designed as beams and complete permanent formwork to carry the dead load of the bridge, to provide a high density concrete protective shell giving a greater degree of protection against deterioration from the elements and to provide a very high quality of finish and architectural design, to provide a complete working platform for construction, and to eliminate the need for temporary scaffolding and formwork. In the second step, additional poured in place concrete is cast into the spaces created by the precast elements and serves as beams, post-tensioned to carry the live loads of the bridge. A bridge is thus created comprised of precast elongated elements supported on abutments at the sides of the spanned region, reinforced concrete beams contained by and between the adjacent elements, and a deck supported by the beams and elongated elements.
REFERENCES:
patent: 2110235 (1938-03-01), Neeld
patent: 3027687 (1962-04-01), Baroni
patent: 4809474 (1989-03-01), Ekberg, Jr.
patent: 4982538 (1991-01-01), Horstketter
Civil Engineering, vol. 42, No. 5, May 1972, New York, U.S. pp. 73-76, Troxell & Montgomery, "Long Span Bridge Utility, Grace at Low Cost".
Britts Ramon S.
Lisehora James A.
Teron International Building Technologies Ltd.
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