For large infrastructures such as bridges, Bridge Bearings, and Expansion Joints are very important elements. Dutco Tennant LLC has the capability to supply fully integrated bearings, which can be "tailor-made" to meet different design requirements for rotations, restraints, loading, movements, and other requirements. Dutco Tennant LLC provides these different bride bearings: Elastomeric bridge bearings for small and moderate loads, Pot bearings for greater loads, Spherical bearings, for high loads and high rotation requirements.
Bridge Elastomeric bearing pad is typically made of a strong and pliable material such as neoprene – a type of heavy-duty industrial rubber. They are placed in between superstructures such as the bridge beam and substructures such as the vertical supports called piers. The primary function of these bearing pads is to distribute superstructure loads to the substructure and allow the superstructure to undergo necessary movements in irregular environmental conditions without creating any harmful stresses that might compromise the structural integrity of the bridge. When the structural integrity of the bridge is compromised, the bridge could collapse.
But preventing the collapse of the bridge is not the only function of an elastomeric bearing pad. The pad extends the life of bridges by reducing wear and tear on bridge materials. The pad helps to save money by delaying the replacement of bridges, just like the way shoes allow human beings to walk long distances.
Laminated elastomeric bearings support simultaneous loads and deformation in any direction. Steel plates are bonded to the rubber through a vulcanization process and have the main scope to increase the resistance of the bearings to vertical loads. The steel plates are fully embedded in the elastomer so that they are protected against corrosion. The connection of the elastomeric bearings to the structure may be through the rubber itself or steel elements of various shapes suitable for any kind of structure. Horizontal movements up to approximately one half of the rubber thickness and rotations are allowed by the flexibility of the rubber. Higher horizontal movements can be reached utilizing the rubber bearings with PTFE.
Our Elastomeric bearings are built to withstand loads and simultaneous deformation in any direction, while also allowing for minor rotations in any of the bearing's axes. These bridge bearings can be made entirely of rubber or can be reinforced with special sheet steel to increase capacity and transversal strength. Bearings can also be produced with special anchor plates or with sliding surfaces to improve the structure's displacement capacity. This kind of bearing can withstand vertical loads of up to 22000 kN.