Features, Recent Application And Conditions For
The Correct Use Of Seismic Isolation Systems
Author(s)
A. Martelli, M. Forni & G. Panza
Abstract
Over 16,000 structures have been protected in the world by seismic isolation (SI)
and other anti-seismic systems. Such structures are located mostly in Japan, but
they are more or less numerous in more than 30 other countries, including Italy
(which is now fourth at worldwide level for the number of isolated buildings,
after Japan, China and the Russian Federation). Application of SI is increasing
everywhere, although its extent is strongly influenced by earthquake lessons and
the features of the design rules used. It concerns both new and existing structures
of all kinds. This paper provides a short overview on its recent progress
worldwide and on the behaviour of seismically isolated buildings during recent
earthquakes, based on the most recent information available to the authors
(including some preliminary data on the effects of the 2011 Christchurch and
Tohoku events). Particular attention is paid to the isolated buildings in Italy, in
the context of the effects of recent quakes (2002 Molise and Puglia and 2009
Abruzzo events). Based on the Italian experience, some important conditions for
the correct use of the anti-seismic systems are also stressed in the Conclusions.
Keywords: anti-seismic systems; seismic isolation; energy dissipation; seismic
input; new constructions; retrofits; seismic codes.
1 Introduction
Over 16,000 structures in the world have been protected by anti-seismic (AS)
techniques, mainly by seismic isolation (SI) or energy dissipation (ED) [1–7].
They are located in more than 30 countries (fig. 1) and concern both new
constructions and retrofits of existing structures of all kinds: bridges and
Keywords
anti-seismic systems; seismic isolation; energy dissipation; seismic
input; new constructions; retrofits; seismic codes
Related Book
Other papers in this volume
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