How can a suspension bridge break apart?

Question

i don't know so im asking this is for my project so answer me as fast as you can when you see this?

Answer 1

A suspension bridge can also fail due to resonance even when there is nothing wrong with the material properties of its elements -- no corrosion, no fretting, no nothing.

See the link or google "tacoma narrows bridge"

Answer 2

Generally, the failure of a suspension bridge follows this pattern:-

1) Fretting occurs in the bearing .    http://en.wikipedia.org/wiki/Fretting

2) Stress corrosion cracking occurs ie. this corroded area is tensile stressed.

3) Mostly residual stresses in the eyebar structure are responsible for the growth of this crack. Failure is primarily due to ductile overload.

Answer 3

i'll spare you of the technical jargon:

a classic 'hanging' bridge (like the golden gate bridge in san francisco) can break apart primarily when the parabolic cable fails. the parabolic cable is the pair of arched cables running from the main supports.. this parabolic cable holds the tensioned cables at regular intervals, which supports the whole length of the bridge..

to build your project however.. it would be wise to temporarily support the bridge from beneath, so you can comfortably connect the cables according to your design.

note that the paired cables should be parabolic; meaning you have to graph and measure the length of each rod per section to correspond in the model you are doing.