Earthquake Protection of Buildings Using High Damping Rubber Isolators or Viscoelastic Dampers
By reducing the seismic forces transmitted into a building, base isolation provides effective protection to the structure and contents. High damping rubber (HDR) bearings are a simple and economical means of providing isolation. The key rubber properties are given. The characteristics of isolators developed for a project involving the retrofitting of isolators to an apartment block are presented. A more novel technology in which the earthquake resistance of a structure is enhanced by the installation of rubber-based damping devices is also described. The material developed for the dampers has a loss factor of about 0.4 and, for a high damping material, has dynamic properties showing modest temperature sensitivity. The results of tests on a mock-up structure show that incorporation of the dampers can reduce the inter-storey drift substantially.
Bibliographic Reference: An oral report given at: Workshop: Mitigation of Seismic Risk Support to Recently Affected European Countries. Organised by: JRC Held at: Hotel Villa Carlotta, Belgirate (IT) Given on: 27-28 November 2000
Record Number: 200013327 / Last updated on: 2001-06-27
Original language: en
Available languages: en