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Stressed ribbon bridge

From Wikipedia, the free encyclopedia

Stressed ribbon bridge
A stressed ribbon pedestrian bridge near Essing, using a fabricated deck.
A stressed ribbon pedestrian bridge near Essing, using a fabricated deck.
AncestorSimple suspension bridge
RelatedSuspension bridge
DescendantNone
CarriesPedestrians, automobiles, trucks
Span rangeMedium
MaterialSteel rope, concrete or treated woods
MovableNo
Design effortMedium
Falsework requiredNo

A stressed ribbon bridge (also stress-ribbon bridge or catenary bridge[1]) is a tension structure similar in many ways to a simple suspension bridge. The suspension cables are embedded in the deck, which follows a catenary arc between supports. As with a simple suspension bridge, the weight is taken by the suspension cables, but unlike the simple span, the deck or ribbon is stressed in compression, which adds to the stiffness of the structure (simple suspension spans tend to sway and bounce). The supports in turn sustain upward-thrusting arcs that allow the grade to be changed between spans (where multiple spans are used). Such bridges are typically made from concrete reinforced by steel tensioning cables. Where such bridges carry vehicle traffic, a certain degree of stiffness is required to prevent excessive flexure of the structure, obtained by stressing the concrete in compression.

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Transcription

Examples

Rogue River Pedestrian Bridge

Notes

  1. ^ Leonardo Fernández Troyano, Bridge Engineering: A global perspective, Thomas Telford, 2003, ISBN 0-7277-3215-3, p. 514.
  2. ^ Puente de la Barra de Maldonado at Structurae. Retrieved 2009-12-07. 34°54′39″S 54°52′22″W / 34.910904°S 54.872745°W / -34.910904; -54.872745
  3. ^ Rogue River Pedestrian Bridge at Structurae. Retrieved 2009-12-07.42°25′38″N 123°20′47″W / 42.427115°N 123.346306°W / 42.427115; -123.346306

References

External links

This page was last edited on 8 August 2023, at 16:56
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