Why choose ISOSISM damping systems?
01. Preservation of the structure integrity
Reduction of earthquake effects on the structure, by absorption of the energy. They also enable critical buildings, such as hospitals, to continue operating.
02. Continuity of activity
For critical buildings, such as hospitals.
03. Seismic retrofitting
Effective protection for structures that were not originally designed to withstand seismic activity.
04. Cost savings
Reduced civil engineering costs at construction stage, and maintenance and repair costs throughout the life cycle
05. Maintenance free
Limited to periodic visual inspection throughout the design life
06. Versatility
New constructions or retrofit purposes.
07. Certified products
Compliant with all international standards, CE marking on request.
08. Taylor made
Optimized design to project specifications
ISOSISM® FD (Fluid Damper)
The ISOSISM® FD is a hydraulic damper using a viscous fluid that is stable under temperature variations and over time.
It is made up of a body with two chambers separated by a piston. The damper operates in both tension and compression.
The damping is provided by the viscous fluid flowing through the piston, which is equipped with specially designed valves.
The system can be used in addition to isolators for bridges and buildings, and bracing in buildings.
Applications: bridges, buildings, energy infrastructures, water infrastructures, stadiums.
The damping is provided by the viscous fluid flowing through the piston, which is equipped with specially designed valves.
The system can be used in addition to isolators for bridges and buildings, and bracing in buildings.
Applications: bridges, buildings, energy infrastructures, water infrastructures, stadiums.
-
Allows free movement of the structure
under normal service conditions -
Dissipates energy during an earthquake
-
Can be designed as a fixed point in service
ISOSISM® PDS (Prestressing Damping Spring)
The ISOSISM® PDS combines the benefits of a viscous fluid damper and a prestressed hydraulic spring. It offers three major functions in a single,compact device:
- In normal operating conditions, the system acts as fixed point.
In the event of an earthquake, the device is automatically tensioned and dissipates the energy.
After the earthquake, it returns the structure to its original position.
Applications: bridges, buildings, energy infrastructures, water infrastructures, stadiums.
-
Prevents movement in normal operating conditions (fixed point).
-
Dissipates energy during an earthquake
-
Recentering capability
ISOSISM® DDD (Displacement Dependent Device)
The ISOSISM® DDD is a metallic yielding damper, whose performance is given by its shape and material. It prevents movements in normal operating conditions. During earthquakes, it deforms to absorb the energy of the earthquake and must be replaced thereafter.
It is often combined with a pot bearing -as shown on the picture- and a Shock Transmitter Unit.
Applications: bridges, buildings, energy infrastructures, water infrastructures, stadiums.
Applications: bridges, buildings, energy infrastructures, water infrastructures, stadiums.
-
Prevents movement in service conditions (fixed point)
Coupled with the STU, it provides a low reaction
to slow movements -
Absorbs energy during an earthquake
-
Very stable cyclic behavior
ISOSISM® FD (Fluid Damper)
The ISOSISM® FD is a hydraulic damper using a viscous fluid that is stable under temperature variations and over time.
It is made up of a body with two chambers separated by a piston. The damper operates in both tension and compression.
The damping is provided by the viscous fluid flowing through the piston, which is equipped with specially designed valves.
The system can be used in addition to isolators for bridges and buildings, and bracing in buildings.
Applications: bridges, buildings, energy infrastructures, water infrastructures, stadiums.
The damping is provided by the viscous fluid flowing through the piston, which is equipped with specially designed valves.
The system can be used in addition to isolators for bridges and buildings, and bracing in buildings.
Applications: bridges, buildings, energy infrastructures, water infrastructures, stadiums.
-
Allows free movement of the structure
under normal service conditions -
Dissipates energy during an earthquake
-
Can be designed as a fixed point in service
ISOSISM® PDS (Prestressing Damping Spring)
The ISOSISM® PDS combines the benefits of a viscous fluid damper and a prestressed hydraulic spring. It offers three major functions in a single,compact device:
- In normal operating conditions, the system acts as fixed point.
In the event of an earthquake, the device is automatically tensioned and dissipates the energy.
After the earthquake, it returns the structure to its original position.
Applications: bridges, buildings, energy infrastructures, water infrastructures, stadiums.
-
Prevents movement in normal operating conditions (fixed point).
-
Dissipates energy during an earthquake
-
Recentering capability
ISOSISM® DDD (Displacement Dependent Device)
The ISOSISM® DDD is a metallic yielding damper, whose performance is given by its shape and material. It prevents movements in normal operating conditions. During earthquakes, it deforms to absorb the energy of the earthquake and must be replaced thereafter.
It is often combined with a pot bearing -as shown on the picture- and a Shock Transmitter Unit.
Applications: bridges, buildings, energy infrastructures, water infrastructures, stadiums.
Applications: bridges, buildings, energy infrastructures, water infrastructures, stadiums.
-
Prevents movement in service conditions (fixed point)
Coupled with the STU, it provides a low reaction
to slow movements -
Absorbs energy during an earthquake
-
Very stable cyclic behavior
Download technical datasheets and CE Certificates
DocumentationBirtouta Sisi Abdallah Zeralda viaduct - Algeria / ISOSISM FD et PDS
LGV Morocco/ ISOSISM FD
Alibeykov and Kahithane viaducts - Turkey / ISOSISM HDBR and DDD
Mardakan Bridge- Azerbaijan / ISOSISM PDS
ISOSISM DDD ready for shipment
Valencia- Spain / ISOSISM FD fixed on abutments
ISOSISM® FD
ISOSISM PDS at Freyssinet premises
ISOSISM® DDD ready for shipment, Freyssinet Products Company, Italy
ISOSISM® PDS installed on Bir Touta Zeralda viaduct, Algeria
Contact us
You have a question about our solutions or you already have a project in mind? Please fill out the form below and our teams will get back to you shortly.