Importance

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Abstract

A bridge module is described which, when in its retracted configuration, is shaped and dimensioned as a standard ISO container, and which, when in its deployed configuration, can be secured end-to-end with other similar modules to form a simple-beam bridge span having a substantially trapezoidal cross-section. The module comprises a road deck which forms the upper chord of the simple beam structure and a lower chord. The shear loading in the simple beam structure is transmitted between the upper and lower chords by means of parallel inner truss elements and angled outer truss elements. The road deck comprises a medial road deck portion and two lateral road deck portions which are hinged at to fold down into a retracted configuration for transport. The angled outer truss elements may be articulated to permit this retraction and to facilitate deployment. In its retracted state, the bridge module fits within a rectangular cuboid.

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First Claim