Vibration damper element for bridges etc.

摘要

The vibration damper has a fluid-filled holder (5) with a plunger body (6). In the sections in fluid contact, the plunger body has one or more surface elements. Flow channels (11,12) are formed between the surface elements, which extend mainly parallel to the movement direction of the plunger body. The surface elements are formed by concentric cylinder sleeves, or by a spirally wound metal strip and are fixed relative to each other. The surface elements are maintained at relative distances, by a plate-shaped template (12) and are surface-treated to increase fluid friction.