HOME / Takenaka's Works / Auguste Robin's "The Gates of Hell" / Seismic Isolation System
As this bronze monument is prone to earthquake damage, it is necessary to reduce the force to the monument induced by an earthquake in order to prevent the monument from collapsing. This isolation system protects this invaluable monument against major earthquakes such as the Great Hanshin Earthquake of 1995.
Isolation unit（CG）
Installation of an isolation unit
Isolation units
Seismic Isolation System（Movie）
Overall view of seismic isolation system
This is an explanation of the motion of the seismic isolation system,
and not a simulation of earthquake motion.
（Click 
to play a video.）
The structure is designed to be directly supported by the foundation or posts (the underground structure in the case of The Gates of Hell) to be able to resist against a large force of an earthquake propagated through the foundation. In this way, a large force of an earthquake is induced to the surface structure (monument).
Viscous damper（Movie）
Overall view of seismic isolation system
This is an explanation of the motion of the seismic isolation system,
and not a simulation of earthquake motion.
（Click to play a video.）
This structure is designed to prevent a large force of an earthquake being propagated through the foundation or posts (the underground structure in the case of The Gates of Hell) and induced to the surface structure (the monument), employing the seismic isolation system composed of circular roller bearings and viscous dampers. In this way, only a small force of an earthquake is induced to the surface structure (monument).
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