elastomeric bearings

About elastomeric bearings

You're likely referring to elastomeric bearings a key component in bridge and structural engineering.

Lets break it down:

What Is an Elastomeric Bearing?

An elastomeric bearing (sometimes mistakenly called elostomeric) is a type of bridge bearing made from layers of rubber (elastomer) usually natural rubber or neoprene often reinforced with steel plates. These allow for controlled movement between structural elements.

Function and Purpose

Elastomeric bearings help with:

• Load transfer: Carry vertical and horizontal loads from the bridge deck to the substructure.

• Thermal expansion/contraction: Accommodate movement caused by temperature changes.

• Vibration and shock absorption: Especially from traffic or seismic activity.

• Rotation: Allow rotation due to loads or deflection.

Types of Elastomeric Bearings

1. Plain Elastomeric Bearings

   • Just rubber pads

   • Used for light-duty structures

2. Laminated Elastomeric Bearings

   • Layers of elastomer and steel plates

   • Higher load capacity and durability

3. Pot Bearings / Spherical Bearings

   • Advanced versions used for very large spans or specialized movement

Common Specs

Standards Followed

• IRC:83 (Part II) Indian Roads Congress

• AASHTO American Association of State Highway and Transportation Officials

• BS EN 1337 European standard

Want help choosing a type for a specific project? Or need supplier info/spec sheets? Let me know how technical you want to get!