Explain in brief expansion bearing for steel girder bridge.

Explain in brief expansion bearing for steel girder bridge.
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1 Answer

Answer :

Types of Expansion Bearing:

1. Sliding Plate Bearing

2. Deep cast with curve plate

3. Rocker bearing with curved base

4. Rocker & roller bearing


Types of Expansion Bearing: 

1. Sliding Plate Bearing: It consists of sole plate which is provided between main girder and bed plate. It is the simplest type of expansion bearing. 

2. Deep cast with curve plate: It consists of a sole plate which is fixed to underside of girder. The sole plate rests on a deep cast base with a curved bed plate 

3. Rocker bearing with curved base: This is the type of rocker bearing. In this type of bearing, the bottom shoe is given a circular shape. 

4. Rocker & roller bearing: It consist of a rocker pin which is provided between the top shoe and the bottom shoe. Bottom shoe rests on number of steel rollers.

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