Frictional Non Rocking Damped Base Isolation System To Mitigate Earthquake Effects On Structures

摘要

The system described herein consists of a seismic isolator and a damping device. The system is used to isolate structures from seismic forces and further reduces transmitted forces via the seismic isolator to structure.;The isolator has a spherical base fixed to ground, middle part that responds to the moving base by rotating around the centre of a small concave or convex, causing the superstructure to move upwards and downwards vertically, and a top part connected to the superstructure and the isolator middle part.;The damping device consists of horizontal seismic force filter, springs, dampers and a vertical force transferor beam.;Structures seismically isolated with the system herein may be protected to adequate amounts that allow minimal or no damages to the superstructures. That means continuous serviceability during and aftermath becomes achievable for the very most of the earthquakes and site characteristics combinations.