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Depends on the type of bridge. Suspension bridges, for example, have tension holding them up. All are acted upon by gravity, and to a lesser extent, the force of contact with the wind.
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What are some forces that act on Bridge?
The forces that acts on the bridge is the way the bridge is built or the mass that is put on the bridge. Some are different it only depends on how the bridge is built.
What forces act upon arch bridges?
Tension and compression are the two forces that act upon a bridge.
How does a cable stayed bridge transfer forces that act on it?
A cable stay bridge may transfer forces that act on it by eventually transfer into a bedrock beneath the bridge foundation. One way of determining how this done is by using the seesaw method.
How do forces act on truss bridges?
There are many forces acting on a truss bridge compression, tension, and torsion. The truss bridge uses equilateral triangles to spread out the stress of the load on these forces along the hold structure.
Why do forces act on bridges?
For a start, it's unavoidable that gravity acts on the bridge. Next, if the bridge is not to fall through to the center of the Earth, Earth must push up on the bridge. There may also be forces caused by wind.
What forces act on the Tower Bridge of London?
First of all, the force of compression impacts the bridge. Also, the force of tension inmpacts the bridge because the more cars there are or any weight the bridge stretches which is tension. tthe force of gravity weighs the bridge down and that is why the bridge has to withstand that. Wind can affect the tower bridge because if there is a huriccane the bridge has to be able to stand without any damage.
What are the forces that act on an arch bridge?
The arch bridge spreads load (the weight of the bridge and the traffic on it) from the deck to the abutments (the supports at each end) and into the ground. This creates a lot of compressions.
What forces act on cantilever bridges?
Compression, Tension, Torsion, and the other is either bending or shear.
What are the most common forces affecting a bridge?
external forces and internal forces
What force is acted on by another?
Forces don't act on other forces - forces act on objects.
What are the forces that act on a bridges?
don't know all the forces but the most important thing engineers have to factor in is the frequency at which the bridge vibrates. Bridges can be likened to a guitar string in that they vibrate at different frequencies. If the bridge is 'in tune' with the frequency of the wind it will wobble violently and eventually collapse. One example is the millennium bridge in London, on it's opening day the force of proples walking from side to side caused the bridge to sway considerably, forcing them to close the bridge and add supports.
Which bridge design is most earthquake resistant?
There are many factors to consider in this question and many types of bridge structure. The structure of a bridge is designed to resist the expected loads that will act on it. The main loads that usually act on a bridge are: - gravity (an acceleration downwards towards the centre of the Earth) on the bridge itself, - gravity on any objects on the bridge, - wind loads on the bridge ( can be in any direction but depends on exposure) - earthquake loads The loads experienced by the bridge in an earthquake can be as strong as or stronger than gravity (9.8ms-2), and act in many directions changing rapidly. A bridge designed to resist these therefore needs to have a structure that can resist significant forces in many directions, (to picture these forces it may help to imagine a model of the bridge being tossed from hand to hand, twisted and shaken), or it can be isolated from the earthquake forces by allowing the earth to move up down and around while the bridge sits quietly. If we look at the example of a simple suspension bridge for one person to walk over, made from some steel cables and wire mesh: - it is light and will not need to resist huge forces (Force= mass.acceleration), - it has the advantage of the elasticity of the steel, - it has the disadvantage that if it is not under much tension ( ie. has slack cables), these may be snapped rapidly in different directions in an earthquake, (picture a whip being used) which will put big loads on them.
