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Preloaded spring dampers
RESTON-PSD
Seismic devices
Characteristics
Energy dissipation and re-centering
Normally fixed until preload reached
For dynamic control e.g. of seismic and traffic forces
Principle
The seismic protection devices RESTON-PSD Preloaded Spring Dampers are designed to dissipate seismic energy in structures, limiting and damping the movements that arise between parts of a structure during an earthquake. Under normal circumstances the seismic dampers act as a fixed connection, preventing movements until a defined preload has been exceeded.
Applications
RESTON-PSD Preloaded Spring Dampers can be used in the construction of new structures, or to enhance an existing structure’s strength and resistance to seismic forces. On bridges, they are installed directly between the bridge deck and its piers.
Sealing system
Manufacturing of a RESTON-PSD seismic damper
Preloaded spring damper in service
Steel bridge equipped with PSD dampers
