Method for installing a bridge having a modular structure

Details Method for installing a bridge having a modular structure Method for installing a bridge having a modular structure

1991-12-11

1993-11-16

Dorner, Kenneth J.

Bridges

Bridge construction method

14 24, 14 8, 14 23, E01D 1902, E01D 1512, E01D 2100

Patent

active

052611388

ABSTRACT:
The bridge includes a plurality of foldable portions or modules (M) interconnectible releasably in sequence longitudinally. Each module (M) includes a central deck member (9) and two lateral deck members (10, 11) articulated to opposite sides of the central deck member (9). Respective longitudinal beams (13-16) extend from the lower faces of the lateral deck members (10, 11) and, together with the homologous beams of the other modules (M), constitute the load-bearing trusses of the bridge in its condition of use.
Conveniently, the bridge is constructed by a method of assembly which provides for the use of a load-bearing assembly structure or forestarling (S). This load-bearing assembly structure (S) is assembled in a position of assembly on a first side (B.sub.1) of the gap (R) to be spanned by the bridge and is then advanced until it reaches the other side (B.sub.2) of the gap. During a subsequent stage in the assembly of the bridge, the load-bearing assembly structure (S) supports a plurality of interconnected modules (M) and guides them for sliding until they reach the opposite side (B.sub.2).
Upon completion of the assembly, the load-bearing assembly structure or forestarling (S) is connected firmly to the structure formed by the modules (M) so as to contribute to the structural strength of the bridge.

REFERENCES:
patent: 3808624 (1974-05-01), Barkdull, Jr.
patent: 4497153 (1985-02-01), Muller
patent: 4799279 (1989-01-01), Muller
patent: 4825492 (1989-05-01), Zehavi et al.

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