The base isolation U-shaped damper is a new steel damper fabricated from high-quality rolled steel (SN490B) and exhibits the following excellent characteristics. There are two models: the laminated rubber integrated base isolation U-shaped damper, and the separated base isolation U-shaped damper.
Merit 1 – High Quality
It absorbs seismic energy and reduces motion during earthquakes using stable restoring force characteristics. It also exhibits low temperature- and oscillation frequency-dependence and excellent fatigue characteristics against repetition.
Merit 2 – High Design Freedom
The optimal design to suit the building shape is possible by combining factors such as size, number and positioning of the base isolation U-shaped dampers.
Merit 3 – Nonorientation
The base isolation U-shaped damper exhibits near-identical hysteretic behavior in all directions (360º).
Merit 4 – Low Cost
It is economical compared to conventional base isolation steel rod dampers, with low cost relative to the level of shear yield strength.
Merit 5 – Easy Inspection
The level of damage following an earthquake can be ascertained visually. The damper section can also be replaced after the seismic activity, in the unlikely event that this is necessary.
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