Elastomerbärningar

Elastomerbärningar, often translated as elastomeric bearings or bridge bearings, are critical components used in civil engineering, particularly in bridge construction. Their primary function is to support the superstructure of a bridge and transmit loads from the deck to the substructure, such as piers and abutments. However, they are designed to accommodate a range of movements and forces that a traditional rigid bearing cannot.

These bearings are typically constructed from layers of synthetic rubber, often reinforced with steel plates. The elasticity of the rubber allows the bearing to deform and absorb various types of movement. This includes thermal expansion and contraction of the bridge deck due to temperature changes, as well as deflections caused by traffic loads. They also play a vital role in accommodating seismic forces, dissipating energy and reducing the stress on the bridge structure during an earthquake.

Elastomerbärningar offer several advantages. They are relatively simple in design, require minimal maintenance, and are cost-effective compared to more complex bearing systems. Their ability to absorb vibrations also contributes to a smoother and quieter ride for vehicles crossing the bridge. The specific design of an elastomerbärning, including the type of rubber, the number and thickness of rubber layers, and the presence and configuration of steel reinforcement, is tailored to the specific requirements of the bridge, considering factors such as expected loads, movement magnitudes, and environmental conditions.