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DAILY NEWS ANALYSIS

  • 01 November, 2022

  • 5 Min Read

Suspension bridge

Suspension bridge

  • Recently, a suspension bridge in Gujarat's Morbi collapsed, killing at least 134 people.
  • The 19th century Bridge, which had just been reopened after six months of repairs, was reportedly carrying over 400 people when it collapsed.

About suspension bridges

  • It is a design where the deck is suspended on vertical suspenders underneath suspension wires.
  • Stiffening girders, two or more main suspension cables, towers, and anchorages for cables are the primary structural elements of a suspension bridge system.
  • The main cables, which connect to the anchorage or the bridge itself, are suspended between the towers.
  • The weight of the deck and the load of commuters on it are supported by vertical suspenders.
  • The structure's design makes sure that the strain on the suspension cables is passed to the towers at its two ends, which then transmits it to the ground by compressing it vertically.
  • Given that the deck is suspended in the air and supported by the two sets of cables, all of this balancing must be performed within the bridge's weight limits.
  • The entire cross-section of the main cable is the basis for supporting the load and making sure that buckling does not occur because the main suspension cables are the most significant load bearing parts.

Facts:

  • Since the earliest ones were built of twisted grass, suspension bridges have been among the most durable constructions.

Bridges everywhere:

  • When Spanish conquistadors entered Peru in 1532, they found an Incan empire that was connected by a large number of suspension bridges that crossed deep mountain canyons.
  • In the US, two examples of suspension bridges are the Brooklyn Bridge and the Golden Gate Bridge.
  • The 725-meter-long Dobra-Chanti suspension bridge built over Tehri Lake is the largest single-lane motorable suspension bridge in India.

Different kinds of Bridges:

  • Bridges can also be arch bridges, beam bridges, cantilever bridges, truss bridges, and tied-arch bridges in addition to suspension bridges.

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Source: The Indian Express


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