Precast bridges

Details Precast bridges Precast bridges

1997-09-24

1999-02-16

Lisehora, James

Bridges

Deck

Joint

14 745, 14 75, 14 771, 405285, 405286, E01D 1902, E02D 2902

Patent

active

058707891

ABSTRACT:
Bearing shoes that run under the abutment's axis with cradles whose precast walls are placed over the bearing shoe assembly, so that when the concrete is poured over these bearing shoes, an integral unit of the bearing shoe integrated with the cradle is formed. For the walls, TT (double T) sections are used, which consist of precast elements of reinforced and/or pre-stressed concrete, that are able to resist the horizontal and vertical forces that could act over the bridge's abutments. These TT sections are used as abutments, wings and gravity retaining walls; as central piers, precast elements of columns with caps are used, in which rectangular-section beams are simply supported with their integrated bents. Occasionally, when the vehicles access embankment or earth fills to the bridge allow it, the abutment is anchored in order to avoid its horizontal thrust, as reinforced earth.

REFERENCES:
patent: 3953979 (1976-05-01), Kurose
patent: 4123485 (1978-10-01), Tang
patent: 4558969 (1985-12-01), Fitzsimons
patent: 4655646 (1987-04-01), Babcock et al.
patent: 4790690 (1988-12-01), Vidal et al.
patent: 5406663 (1995-04-01), Chen
patent: 5483716 (1996-01-01), Burnaman
patent: 5549420 (1996-08-01), Nakayama
Ascent Magazine, "Bridge `Penuelas, ` Queretaro City, Queretaro State, Mexico", Fall, 1994, Magazine mailed Oct. 20, 1994.

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