Forces acting on suspension bridge uday bhaskar

Forces acting on Suspension Bridge.........
External Forces:
Two kinds of external forces operate on any bridge;
Static load (dead Load) :- refers to the weight of the bridge itself. Like any other structure, a bridge has a tendency to collapse simply because of the gravitational forces acting on the materials of which the bridge is made.
Dynamic load (live Load) :- refers to traffic that moves across the bridge as well as normal environmental factors such as changes in temperature, precipitation, winds, and extreme environmental factors such as natural disasters.
Both factors must be taken into consideration when building a bridge. If not taken into account, a suspension bridge will easily break down and can cause extreme danger.
Internal Forces:
There are four main types of internal forces acting upon suspension bridges:-
Tension: Tension is the pulling force that acts on the cables and suspenders of a suspension bridge.
Compression: Compression is a pressing force that acts on the towers of a suspension bridge.
Torsion: Torsion is a twisting force that can be seen when suspension bridges are put under high wind speeds. The bridge will begin to move and twist if torsion is not taken into consideration.
Shear: Shear forces occur when forces push or pull in opposite directions. This can cause an object to bend or break. In a suspension bridge the towers and cables can experience opposite forces (cable pulling left/right while towers compress down) and if this is not taken into account for, the bridge will completely bend and break.

1. Forces acting on Suspension Bridge External Forces: Two kinds of external forces operate on any bridge; Static load ( dead Load) :- refers to the weight of the bridge itself. Like any other structure, a bridge has a tendency to collapse simply because of the gravitational forces acting on the materials of which the bridge is made . Dynamic load (live Load) :- refers to traffic that moves across the bridge as well as normal environmental factors such as changes in temperature, precipitation, winds, and extreme environmental factors such as natural disasters. Both factors must be taken into consideration when building a bridge. If not taken into account, a suspension bridge will easily break down and can cause extreme danger. Internal Forces: There are four main types of internal forces acting upon suspension bridges:- Tension : Tension is the pulling force that acts on the cables and suspenders of a suspension bridge . Compression : Compression is a pressing force that acts on the towers of a suspension bridge. Torsion : Torsion is a twisting force that can be seen when suspension bridges are put under high wind speeds. The bridge will begin to move and twist if torsion is not taken into consideration . Shear : Shear forces occur when forces push or pull in opposite directions. This can cause an object to bend or break . In a suspension bridge the towers and cables can experience opposite forces (cable pulling left/right while towers compress down) and if this is not taken into account for, the bridge will completely bend and break.