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Concepts
And Research Of Spans
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The Arch Bridge: An arch bridge works by transferring
the weight of its loads across it arch.
An Arch bridge is always under compression. The force of compression is pushed
outward along the curve and toward its abutments. The greater the degree of curvature is
the greater the amount of tension becomes.
The compression is the force downward from the road of walkway and
the tension is the force outward from the bottom of the arch.
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The Cable-Stayed Bridge: A cable-stayed bridge is a
bridge that consists of one or more columns. These columns have cables that are
attached to them to support the deck of the bridge. This bridge is one of the best bridges to
build because it is very stable in the wind and is less expensive to build
then some of the other bridges. The
cables are extremely strong and very flexible. Only a few cables can hold up the bridge,
but their flexibility makes them weak to the forces of weather such as
wind.
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The Cantilever
Bridge: A cantilever bridge
is a bridge that is built using cantilevers. A cantilever is a structure that projects
horizontally into space and is supported on only one end. When the cantilever is spanning a large
area they use trusses to carry the weight.
The trusses are usually made out of steel. They also use columns every so often when
they want to keep the span going.
The columns could make from either structural steel or
concrete.
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