Stochastic Seismic Analysis and Comparison of Alternative External Dissipative Systems
This paper deals with the seismic retrofit of existing frames by means of external passive dissipative systems. Available in different configurations, these systems allow high flexibility in controlling the structural behaviour and are characterized by some feasibility advantages with respect to dis...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/5403737 |
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| _version_ | 1849692287442878464 |
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| author | Laura Gioiella Enrico Tubaldi Fabrizio Gara Luigino Dezi Andrea Dall’Asta |
| author_facet | Laura Gioiella Enrico Tubaldi Fabrizio Gara Luigino Dezi Andrea Dall’Asta |
| author_sort | Laura Gioiella |
| collection | DOAJ |
| description | This paper deals with the seismic retrofit of existing frames by means of external passive dissipative systems. Available in different configurations, these systems allow high flexibility in controlling the structural behaviour and are characterized by some feasibility advantages with respect to dissipative devices installed within existing frames. In particular, this study analyzes and compares the performances of two external solutions using linear viscous dampers. The first is based on the coupling of the building with an external fixed-based steel braced frame by means of dampers placed horizontally at the floor levels. The second is an innovative one, based on coupling the building with a “dissipative tower,” which is a steel braced frame hinged at the foundation level, and activating the dampers through its rocking motion. The effectiveness of the two solutions is evaluated and compared by considering a benchmark existing reinforced concrete building, employing a stochastic dynamic approach, under the assumption of linear elastic behaviour for the seismic performance evaluation. This allows efficiently estimating the statistics of many response parameters of interest for the performance assessment and thus carrying out extensive parametric analyses for different properties of the external systems. The study results provide useful information regarding the design and the relative efficiency of the proposed retrofit solutions. |
| format | Article |
| id | doaj-art-ee2a44cdcbe645fe874fae704961dc02 |
| institution | DOAJ |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-ee2a44cdcbe645fe874fae704961dc022025-08-20T03:20:44ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/54037375403737Stochastic Seismic Analysis and Comparison of Alternative External Dissipative SystemsLaura Gioiella0Enrico Tubaldi1Fabrizio Gara2Luigino Dezi3Andrea Dall’Asta4School of Architecture and Design, University of Camerino, Viale della Rimembranza, 63100 Ascoli Piceno, ItalyDepartment of Civil and Environmental Engineering, University of Strathclyde, 75 Montrose Street, Glasgow G1 1XJ, UKDepartment of Civil and Building Engineering and Architecture, Università Politecnica delle Marche, Via Brecce Bianche, Ancona, ItalyDepartment of Civil and Building Engineering and Architecture, Università Politecnica delle Marche, Via Brecce Bianche, Ancona, ItalySchool of Architecture and Design, University of Camerino, Viale della Rimembranza, 63100 Ascoli Piceno, ItalyThis paper deals with the seismic retrofit of existing frames by means of external passive dissipative systems. Available in different configurations, these systems allow high flexibility in controlling the structural behaviour and are characterized by some feasibility advantages with respect to dissipative devices installed within existing frames. In particular, this study analyzes and compares the performances of two external solutions using linear viscous dampers. The first is based on the coupling of the building with an external fixed-based steel braced frame by means of dampers placed horizontally at the floor levels. The second is an innovative one, based on coupling the building with a “dissipative tower,” which is a steel braced frame hinged at the foundation level, and activating the dampers through its rocking motion. The effectiveness of the two solutions is evaluated and compared by considering a benchmark existing reinforced concrete building, employing a stochastic dynamic approach, under the assumption of linear elastic behaviour for the seismic performance evaluation. This allows efficiently estimating the statistics of many response parameters of interest for the performance assessment and thus carrying out extensive parametric analyses for different properties of the external systems. The study results provide useful information regarding the design and the relative efficiency of the proposed retrofit solutions.http://dx.doi.org/10.1155/2018/5403737 |
| spellingShingle | Laura Gioiella Enrico Tubaldi Fabrizio Gara Luigino Dezi Andrea Dall’Asta Stochastic Seismic Analysis and Comparison of Alternative External Dissipative Systems Shock and Vibration |
| title | Stochastic Seismic Analysis and Comparison of Alternative External Dissipative Systems |
| title_full | Stochastic Seismic Analysis and Comparison of Alternative External Dissipative Systems |
| title_fullStr | Stochastic Seismic Analysis and Comparison of Alternative External Dissipative Systems |
| title_full_unstemmed | Stochastic Seismic Analysis and Comparison of Alternative External Dissipative Systems |
| title_short | Stochastic Seismic Analysis and Comparison of Alternative External Dissipative Systems |
| title_sort | stochastic seismic analysis and comparison of alternative external dissipative systems |
| url | http://dx.doi.org/10.1155/2018/5403737 |
| work_keys_str_mv | AT lauragioiella stochasticseismicanalysisandcomparisonofalternativeexternaldissipativesystems AT enricotubaldi stochasticseismicanalysisandcomparisonofalternativeexternaldissipativesystems AT fabriziogara stochasticseismicanalysisandcomparisonofalternativeexternaldissipativesystems AT luiginodezi stochasticseismicanalysisandcomparisonofalternativeexternaldissipativesystems AT andreadallasta stochasticseismicanalysisandcomparisonofalternativeexternaldissipativesystems |