Intermediate Isolation System with Nonlinear Lower Structure and Isolation System
This paper reports a study on the Intermediate Isolation System (IIS) applied to existing buildings. This kind of application is particularly suitable when a vertical addition is planned for buildings in seismic zones; in such a case, an isolation system can be placed at the base of the extension to...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-04-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/13/7/4590 |
| _version_ | 1797608268502138880 |
|---|---|
| author | Francesco Esposito Mario Argenziano Diana Faiella Elena Mele |
| author_facet | Francesco Esposito Mario Argenziano Diana Faiella Elena Mele |
| author_sort | Francesco Esposito |
| collection | DOAJ |
| description | This paper reports a study on the Intermediate Isolation System (IIS) applied to existing buildings. This kind of application is particularly suitable when a vertical addition is planned for buildings in seismic zones; in such a case, an isolation system can be placed at the base of the extension to prevent the increase, or, better, to reduce the seismic demand on the existing structure. In previous works, parametric response spectrum analyses have been carried out on lumped mass models by varying the period of the isolation system. As a result, a sort of <i>IIS design spectrum</i> has been derived and used for selecting design solutions for the vertical extension that minimize the overall seismic response. In this paper, the above design indications are assessed in the light of nonlinear time history analyses, accounting for the hysteretic response of the existing structure and the nonlinear behaviour of the isolation system. The IIS configurations are analysed and the results are discussed and compared in terms of peak response. In light of the obtained analysis results, the effectiveness and robustness of IIS applications for vertical extensions are discussed, and design implications are suggested. |
| first_indexed | 2024-03-11T05:42:09Z |
| format | Article |
| id | doaj.art-ba76d4bd4b9f4552b66df2dd5e04076b |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T05:42:09Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-ba76d4bd4b9f4552b66df2dd5e04076b2023-11-17T16:22:48ZengMDPI AGApplied Sciences2076-34172023-04-01137459010.3390/app13074590Intermediate Isolation System with Nonlinear Lower Structure and Isolation SystemFrancesco Esposito0Mario Argenziano1Diana Faiella2Elena Mele3Department of Structures for Engineering and Architecture, University of Naples Federico II, 80125 Naples, ItalyDepartment of Structures for Engineering and Architecture, University of Naples Federico II, 80125 Naples, ItalyDepartment of Structures for Engineering and Architecture, University of Naples Federico II, 80125 Naples, ItalyDepartment of Structures for Engineering and Architecture, University of Naples Federico II, 80125 Naples, ItalyThis paper reports a study on the Intermediate Isolation System (IIS) applied to existing buildings. This kind of application is particularly suitable when a vertical addition is planned for buildings in seismic zones; in such a case, an isolation system can be placed at the base of the extension to prevent the increase, or, better, to reduce the seismic demand on the existing structure. In previous works, parametric response spectrum analyses have been carried out on lumped mass models by varying the period of the isolation system. As a result, a sort of <i>IIS design spectrum</i> has been derived and used for selecting design solutions for the vertical extension that minimize the overall seismic response. In this paper, the above design indications are assessed in the light of nonlinear time history analyses, accounting for the hysteretic response of the existing structure and the nonlinear behaviour of the isolation system. The IIS configurations are analysed and the results are discussed and compared in terms of peak response. In light of the obtained analysis results, the effectiveness and robustness of IIS applications for vertical extensions are discussed, and design implications are suggested.https://www.mdpi.com/2076-3417/13/7/4590vertical extensionintermediate isolation systemnonconventional TMDmasonry structuresseismic retrofit |
| spellingShingle | Francesco Esposito Mario Argenziano Diana Faiella Elena Mele Intermediate Isolation System with Nonlinear Lower Structure and Isolation System Applied Sciences vertical extension intermediate isolation system nonconventional TMD masonry structures seismic retrofit |
| title | Intermediate Isolation System with Nonlinear Lower Structure and Isolation System |
| title_full | Intermediate Isolation System with Nonlinear Lower Structure and Isolation System |
| title_fullStr | Intermediate Isolation System with Nonlinear Lower Structure and Isolation System |
| title_full_unstemmed | Intermediate Isolation System with Nonlinear Lower Structure and Isolation System |
| title_short | Intermediate Isolation System with Nonlinear Lower Structure and Isolation System |
| title_sort | intermediate isolation system with nonlinear lower structure and isolation system |
| topic | vertical extension intermediate isolation system nonconventional TMD masonry structures seismic retrofit |
| url | https://www.mdpi.com/2076-3417/13/7/4590 |
| work_keys_str_mv | AT francescoesposito intermediateisolationsystemwithnonlinearlowerstructureandisolationsystem AT marioargenziano intermediateisolationsystemwithnonlinearlowerstructureandisolationsystem AT dianafaiella intermediateisolationsystemwithnonlinearlowerstructureandisolationsystem AT elenamele intermediateisolationsystemwithnonlinearlowerstructureandisolationsystem |