ARCH
BRIDGE- works by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the
abutments at either side.� Arch bridges
are constantly under compression.� 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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CABLE-STAYED BRIDGE- has greater
stiffness than the suspension bridge, so that deformations of the deck under
live loads are reduced.� The cables act
as temporary and permanent supports to the bridge deck.� A further advantage of the cable-stayed
bridge is that any number of towers may be used.
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TRUSS
BRIDGE- composed of connected elements which may be stressed from tension, compression, or sometimes
both in response to dynamic loads.�
Trusses are assumed to be pin jointed where the straight components
meet.�
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