Design details for anti-seismic isolation system based on friction force

Abstract

Multiple solutions are currently used, in constructions domain regarding the structure isolation against seismic actions, operating on different principles such as seismic energy dissipation or dynamic motions isolation. For these purposes, special mechanical devices are built, that embedded between the structural frames of a building manage to reach the
stated purpose of improving the structure behavior during high magnitude seismic actions. In this paper an isolation system is described meant for the base isolation of structures based on the dry friction force principle. This is a composed device having from one to several spherical metallic friction surface plates that is mounted between the foundation and the
superstructure of the building, ensuring freedom of movement for the foundation together with the ground when an earthquake occurs while the superstructure tends to remain in equilibrium position.