000013624 001__ 13624
000013624 005__ 20161114165849.0
000013624 04107 $$aeng
000013624 046__ $$k2011-05-25
000013624 100__ $$aMartelli, A.
000013624 24500 $$aSeismic Retrofit of Existing Buildings by Means of Seismic Isolation: Some Remarks on the Italian Experience and New Projects

000013624 24630 $$n3.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013624 260__ $$bNational Technical University of Athens, 2011
000013624 506__ $$arestricted
000013624 520__ $$2eng$$aSeismic isolation (SI) has been used in Italy for several applications, which include important retrofits of civil structures and cultural heritage. Some new hospitals, all new civil defence centres and most new schools have already been (or are being) isolated, together with a significant number of dwelling buildings and other constructions. The 2009 Abruzzo earthquake caused an increase of the number of the Italian isolated buildings from about 70 to over 300. Prior to the aforesaid event, the Italian SI systems consisted in High Damping Rubber Bearings (HDRBs) or Lead Rubber Bearings, to which plane surfaces steel-PTFE Sliding Devices (SDs) were added in the last years. Now, Curved Surface Slider devices are also in use. The first Italian building to be retrofitted with SI was a reinforced concrete (r.c.) civic centre in Naples in 2004. Its foundation pillars and walls were cut, approximately 600 HDRBs were installed and a steel beams floor was added above the isolators to stiffen the superstructure base as necessary. In the same year, two 4-storey r.c. dwelling buildings were retrofitted, each with 12 HDRBs and 13 SDs, in Solarino, near Syracuse. In 2005 the first European retrofit with SI in a sub-foundation was completed: it concerned a 3-storey r.c. house in Fabriano that had suffered severe but non-structural damage in the 1997-98 Marche & Umbria quake. For this intervention 56 HDRBs were used. Further retrofits with SI were also performed for churches, schools, further dwelling buildings, tanks, single masterpieces, etc. The significant extension of the use of SI after the Abruzzo quake concerns this and other Italian regions. The new applications include numerous retrofits: at L’Aquila they mainly concern civil and monumental buildings damaged by the quake. In the latter, the SI system will be inserted in a sub-foundation, not to cut the structural elements or existing foundations, and a new method patented by ENEA and Polytechnic of Torino in 2010 will also be used.

000013624 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013624 653__ $$aSeismic Isolation, Buildings, Bridges, Plants, Cultural Heritage, Retrofit.

000013624 7112_ $$aCOMPDYN 2011 - 3rd International Thematic Conference$$cIsland of Corfu (GR)$$d2011-05-25 / 2011-05-28$$gCOMPDYN2011
000013624 720__ $$aMartelli, A.$$iForni, M.
000013624 8560_ $$ffischerc@itam.cas.cz
000013624 8564_ $$s2097887$$uhttps://invenio.itam.cas.cz/record/13624/files/396.pdf$$yOriginal version of the author's contribution as presented on CD, section: MS 14 Innovative vs. Conventional Retrofitting of Existing Buildings.
000013624 962__ $$r13401
000013624 980__ $$aPAPER