A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Seismic Retrofit of Buildings with Seismic Isolation: The Italian Experience
The advantages of Seismic Isolation (SI) can be exploited in seismic retrofit of existing buildings. The strong reduction of acceleration offered by SI allows an impressive improvement of the performance of old buildings, designed without taking into account earthquake at all, or for a seismicity level much lower than the one required by present standards. An additional advantage of SI compared with conventional strenghtening techniques is that the retrofit works can be limited at one floor (usually the basement, plus the foundation), without any strenghtening intervention on the superstructure. Consequently, the building can be mantained in use during the retrofit works. In Italy, seismic retrofit of buildings with SI became relatively common after the 2009 L'Aquila earthquake, initially on buildings strongly damaged by the earthquake and declared uninhabitable. Recently, retrofit with SI is continuosly increasing, even in areas not recently affected by earthquakes. Now the Italian buildings retrofitted with SI are about 1/3 of the total number of seismically isolated buildings. Both private and public buildings are included. Most of said buildings are in reinforced concrete framed structure, but some old masonry monumental buildings have been seismically isolated as well. The paper describes the typical techniques used to insert the isolators in existing buildings, and a case study of a masonry building is shown in detail.
Seismic Retrofit of Buildings with Seismic Isolation: The Italian Experience
The advantages of Seismic Isolation (SI) can be exploited in seismic retrofit of existing buildings. The strong reduction of acceleration offered by SI allows an impressive improvement of the performance of old buildings, designed without taking into account earthquake at all, or for a seismicity level much lower than the one required by present standards. An additional advantage of SI compared with conventional strenghtening techniques is that the retrofit works can be limited at one floor (usually the basement, plus the foundation), without any strenghtening intervention on the superstructure. Consequently, the building can be mantained in use during the retrofit works. In Italy, seismic retrofit of buildings with SI became relatively common after the 2009 L'Aquila earthquake, initially on buildings strongly damaged by the earthquake and declared uninhabitable. Recently, retrofit with SI is continuosly increasing, even in areas not recently affected by earthquakes. Now the Italian buildings retrofitted with SI are about 1/3 of the total number of seismically isolated buildings. Both private and public buildings are included. Most of said buildings are in reinforced concrete framed structure, but some old masonry monumental buildings have been seismically isolated as well. The paper describes the typical techniques used to insert the isolators in existing buildings, and a case study of a masonry building is shown in detail.
Seismic Retrofit of Buildings with Seismic Isolation: The Italian Experience
Lecture Notes in Civil Engineering
Sadan, Bahadir (editor) / Tuzun, Cuneyt (editor) / Erdik, Mustafa (editor) / Castellano, Maria Gabriella (author) / Vetturini, Riccardo (author) / Cecchini, Walter (author) / Trombettoni, Leonardo (author)
World Conference on Seismic Isolation ; 2023 ; Antalya, Türkiye
Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures ; Chapter: 47 ; 597-610
2024-09-29
14 pages
Article/Chapter (Book)
Electronic Resource
English
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