Elastomeric Seismic Restraints RG/RONAMSISM

Elastomeric anti-seismic systems, when used with concrete shear keys and positioned at the top of piers or abutments, are designed to limit the deck movements in the event of bearing separation during a seismic event.
The reinforced rubber pad dissipates part of the seismic energy and mitigates impulsive forces thanks to its deformability.

The system includes a support plate S275JR steel with slotted holes for easy fastening using anchor bolts or expansion plugs, there by simplifying maintenance operations. The elastomeric pad (in rubber compliant with UNI EN 1337-3) is vulcanized to the plate and internally reinforced with steel shims.

Fixed mechanical anti-seismic devices are used to connect moving elements to fixed structures, ideal for bridges and viaducts.

These systems relieve the bearings from the task of absorbing horizontal loads caused by seismic events. The double-pendulum hinge configuration allows freedom of movement and accomodates deflections or settlements.

Elastomeric Seismic Restraints RG/RONAMSISM

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