What is the function of bridge bearing?

A bridge bearing carries the loads or movement in both vertical and horizontal directions from the bridge superstructure and transfers those loads to the bridge piers and abutments. The loads can be live load and dead load in vertical directions, or wind load, earthquake load, etc., in horizontal directions.

What are the types of bridge bearing?

Types of bridge bearings

  • Rocker bearings.
  • Elastomeric bearings.
  • Sliding bearings.
  • Spherical bearings.

What is bearing in bridge structure?

Bridge bearings are structural equipment or devices installed between bridge substructure and superstructure to transfer the applied load including earthquake loads; wind loads; traffic loads; and superstructure self-weight.

Why bearing pads are used in bridge?

Load bearing pads are used extensively in bridge construction, building, and general industrial applications. The primary function of these solid rubber pads is to absorb the compressive forces of loading, while isolating and absorbing the destructive effects of shock and vibration.

Why are bearings important?

The main purpose of bearings is to prevent direct metal to metal contact between two elements that are in relative motion. This prevents friction, heat generation and ultimately, the wear and tear of parts. It also reduces energy consumption as sliding motion is replaced with low friction rolling.

What is the type of bearing?

There are many different types of bearings, each used for specific purposes and designed to carry specific types of loads, radial or thrust. Here, we’ll look at the 6 most popular types: plain bearings, rolling element bearings, jewel bearings, fluid bearings, magnetic bearings, and flexure bearings.

What is rocker bearing?

“Rocker” Bearings or “Built-up” Bearings are stout mechanical bearings using pins or “rockers” to permit rotation and translation (movement). (See Figure 1 for an example of a Pin Type Expansion Bearing). These bearings were once used extensively, but with more modern bearing designs are not as common today.

What is spherical bridge bearing?

Spherical Bridge Bearing. Brief Description : The Spherical Bearing is a structural bearing which consists of a set of concave & convex mating steel backing plate with a low friction sliding interface in between thereby permitting rotation by incurve sliding.

What is bearing in civil engineering?

The horizontal angle between the reference meridian and the survey line is termed as bearing of the survey line. Magnetic Bearing: The magnetic needle of the compass always points towards the magnetic north-south (N-S) direction indicating earth’s magnetic axis.

What are the four functions of bearings?

MAIN FUNCTIONS OF BEARINGS

  • Reducing friction.
  • Supporting the load.
  • Providing the guide for moving components such as shafts or wheels.