Installation of Seismic Isolation Bearings in Building

HiSCS’s Engineers & Technicians executed the installation of anti-seismic High Damping Rubber Bearings (HDRB), at a private residential building construction site, located in Athens, Greece. In total ten (10) HDRB bearings and one Free Sliding Pot Bearing were installed, following a methodology designed by HiSCS, to assure the prompt installation of these devices, in line with the construction requirements and the building design codes.

The seismic isolation bearings, installed on the top of the basement columns, are capable to bear a maximum vertical seismic load of 3180KN each, with horizontal movement capacity of ±250mm. The pot bearing, installed in the elevator’s shaft, is capable to bear a maximum vertical load of 2320KN, with horizontal sliding capacity in all directions of ±250mm.

Seismic base isolation is one of the most popular means of protecting a structure against earthquake forces. The fundamental principle of a base isolation system is to alter the response of the building structure so that the ground below can move “independently” without transmitting these motion forces to the building above. This is achieved by the deformation of the bearing’s rubber, which, in the case of using HDRB bearings, has a considerable damping capacity (about 15% equivalent viscous damping at 100% shear strain). During an earthquake event, the superstructure (floors), is isolated from the substructure (basement columns) that is resting on.

©[2022] Reyelise Ltd.

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