Pot Bridge Bearing

Pot bridge bearing, also known as pot rubber bearing, with elastomeric bearing embedded inside of the steel plate, can be divided into fixed pot bearing, guided pot bearing and free sliding pot bearing. Pot bearings are special types of bridge bearings for taking large loads, large horizontal displacements and large rotation requirements in confined areas. The loading capacity of elastomeric bearings is limited, while pot bearings solved this problem, thus pot bearings are often regarded as suitable for use when bridges need large bearing reactions.

Components:

• Steel top plates – capable to accommodate longitudinal or transverse sliding movements of the superstructure.
• Stainless steel panels & PTFE – reduce the friction resistance as well as horizontal force.
• Steel piston & internal brass sealing ring – protect the elastomer pad from extrusion.
• Elastomeric pad- behaves like a fluid under high pressure and allows higher working pressure with reduced dimensions.

Pot bridge bearing is also known as pot rubber bearing, is a new type of bridge bearing composed of steel and rubber. Compared with other similar types of bridge bearings, it has the advantages of large bearing capacity, large horizontal displacement, flexible rotation, and so on. The pot rubber bearing is composed of an upper steel plate, stainless steel plate, PTFE plate, sealing ring, elastomeric pad, pot, foundation bolt, and dust cover.

The pot bearing is designed to withstand a combination of vertical load, horizontal load, longitudinal and lateral movement and rotation. It supports vertical loads by means of rubber discs confined in steel pans and caps. This type of bearing can withstand very high loads of more than 50.000 kN. At the same time, due to its deformability, it allows rotation around any axis.

Pot bridge bearing is a special type of bridge bearing used to withstand large loads, large horizontal displacements and large rotation requirements in narrow areas. They are particularly suitable for curved or inclined bridges and other complex structures where the direction of rotation varies or cannot be precisely determined. 

Features:

• With low-profile yet high loading capability over 50,000 KN.
• Maximized shearing strength of elastomer pad through the method of encasing it in the steel pot.
• Allow for large rotations ranging from 0 to 0.03 rad.
• Low friction coefficient between 1% and 3%.
• Excellent fatigue, impact and aging resistance of the layer of PTFE.
• All the metallic parts are protected against corrosion by galvanization and epoxy painting according to EN 1337-9 (other protective coatings are available as your requirements).
• Easy and quick to install.
• Easy to maintain and replace the worn out and broken part.
• Complying with BS EN-1337, KS4424, AASHO, ISO or other custom standards

Applications of Pot Bearing

• Locations requiring thin, high-load bearing units
• he structure of the bridge can be rotated in all directions
• Curved or inclined bridge
• Highway
• Complex structure that accurately determines the direction of rotation
• Other areas that also need to meet large loads and rotation requirements