Stressed ribbon bridge

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
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. Unlike the simple span, the ribbon is stressed in traction, which adds to the stiffness of the structure (simple suspension spans tend to sway and bounce). The supports in turn support 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.

Examples[edit]

Rogue River Pedestrian Bridge

Notes[edit]

  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[edit]

External links[edit]