This stand is manufactured based on the KS 4420. In case that both composition
and functions of stand is damaged, the metallic materials are reinforced by injecting
the rubber plate.
Both movement and rotation of structure is absorbed and minimizes the second stres
generated in bridge.
This stand is manufactured considering the seismic intensity based on the bridge stand manual issued by the Japan Road Cooperation. Both composition and functions of the stand is that the upper side of the half-spherical bearing plate the solid lubricant agent is injected is contacted with the uppr and lower sides.