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2021-03-18
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Loose Point

In contrast to fixed points (1 and 3), loose points (2) do not transfer any horizontal forces to subsequent structures. For example, roller supports are displaceable in the longitudinal direction of a bridge. Thus, the linear expansion due to temperature can be compensated without the necessity to enter additional loads into the structure.

Possible Scheme of Bridge with Fixed and Loose Points

Roller Bearing