Probabilistic performance assessment of seismically excited buildings with semi-active fluid viscous dampers
This paper presents a procedure to assess the probabilistic performance of the semi-active fluid viscous dampers (SAFVDs) utilized in seismically excited buildings. Some efficient on-off semi-active control algorithms based on motion towards or away from equilibrium, sky-hook, and ground-hook have b...
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| Format: | Article |
| Language: | English |
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K. N. Toosi University of Technology
2022-06-01
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| Series: | Numerical Methods in Civil Engineering |
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| Online Access: | https://nmce.kntu.ac.ir/article_160579_79b9cc715439a9a0583e5afec00ab55e.pdf |
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| author | Ali Asghar Naderi Sina Bkhshinezhad Shahrokh Rezaei |
| author_facet | Ali Asghar Naderi Sina Bkhshinezhad Shahrokh Rezaei |
| author_sort | Ali Asghar Naderi |
| collection | DOAJ |
| description | This paper presents a procedure to assess the probabilistic performance of the semi-active fluid viscous dampers (SAFVDs) utilized in seismically excited buildings. Some efficient on-off semi-active control algorithms based on motion towards or away from equilibrium, sky-hook, and ground-hook have been considered to determine the variable damping in each time step. The probabilistic relationship between intensity measure (IM) and seismic demand of the building has been estimated based on cloud analysis. A linear regression analysis has been employed to calculate the probabilistic demand parameters. A three-story nonlinear shear-type building equipped with SAFVDs has been adopted for the numerical example. The building has been subjected to a set of 20 actual earthquke records with the probability of occurrence of 10% in 50 years for the site of interest. The probabilistic performance of the nonlinear building equipped with SAFVDs has been assessed in terms of demand and fragility curves. The results indicate the effectiveness of the SAFVD systems in mitigating the fragility and enhancing the safety of the building. Particularly, a fragility reduction of about 51% is achieved at the immediate occupancy (IO) performance level using the SAFVD system. |
| format | Article |
| id | doaj-art-63dd49dec38f40178d68bf2bbe9bb832 |
| institution | OA Journals |
| issn | 2345-4296 2783-3941 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | K. N. Toosi University of Technology |
| record_format | Article |
| series | Numerical Methods in Civil Engineering |
| spelling | doaj-art-63dd49dec38f40178d68bf2bbe9bb8322025-08-20T01:58:38ZengK. N. Toosi University of TechnologyNumerical Methods in Civil Engineering2345-42962783-39412022-06-0171162710.52547/nmce.2022.353160579Probabilistic performance assessment of seismically excited buildings with semi-active fluid viscous dampersAli Asghar Naderi0Sina Bkhshinezhad1Shahrokh Rezaei2Professor Assistant, Mechanical Engineering Department, Imam Ali University, Tehran, Iran.Ph.D., Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, Iran.Ph.D., Faculty of Engineering, University of Tehran, Tehran, Iran.This paper presents a procedure to assess the probabilistic performance of the semi-active fluid viscous dampers (SAFVDs) utilized in seismically excited buildings. Some efficient on-off semi-active control algorithms based on motion towards or away from equilibrium, sky-hook, and ground-hook have been considered to determine the variable damping in each time step. The probabilistic relationship between intensity measure (IM) and seismic demand of the building has been estimated based on cloud analysis. A linear regression analysis has been employed to calculate the probabilistic demand parameters. A three-story nonlinear shear-type building equipped with SAFVDs has been adopted for the numerical example. The building has been subjected to a set of 20 actual earthquke records with the probability of occurrence of 10% in 50 years for the site of interest. The probabilistic performance of the nonlinear building equipped with SAFVDs has been assessed in terms of demand and fragility curves. The results indicate the effectiveness of the SAFVD systems in mitigating the fragility and enhancing the safety of the building. Particularly, a fragility reduction of about 51% is achieved at the immediate occupancy (IO) performance level using the SAFVD system.https://nmce.kntu.ac.ir/article_160579_79b9cc715439a9a0583e5afec00ab55e.pdfsemi-active fluid viscous dampersprobabilistic seismic performance assessmentuncertain seismic demandfragility analysisground-hook controlsky-hook control |
| spellingShingle | Ali Asghar Naderi Sina Bkhshinezhad Shahrokh Rezaei Probabilistic performance assessment of seismically excited buildings with semi-active fluid viscous dampers Numerical Methods in Civil Engineering semi-active fluid viscous dampers probabilistic seismic performance assessment uncertain seismic demand fragility analysis ground-hook control sky-hook control |
| title | Probabilistic performance assessment of seismically excited buildings with semi-active fluid viscous dampers |
| title_full | Probabilistic performance assessment of seismically excited buildings with semi-active fluid viscous dampers |
| title_fullStr | Probabilistic performance assessment of seismically excited buildings with semi-active fluid viscous dampers |
| title_full_unstemmed | Probabilistic performance assessment of seismically excited buildings with semi-active fluid viscous dampers |
| title_short | Probabilistic performance assessment of seismically excited buildings with semi-active fluid viscous dampers |
| title_sort | probabilistic performance assessment of seismically excited buildings with semi active fluid viscous dampers |
| topic | semi-active fluid viscous dampers probabilistic seismic performance assessment uncertain seismic demand fragility analysis ground-hook control sky-hook control |
| url | https://nmce.kntu.ac.ir/article_160579_79b9cc715439a9a0583e5afec00ab55e.pdf |
| work_keys_str_mv | AT aliasgharnaderi probabilisticperformanceassessmentofseismicallyexcitedbuildingswithsemiactivefluidviscousdampers AT sinabkhshinezhad probabilisticperformanceassessmentofseismicallyexcitedbuildingswithsemiactivefluidviscousdampers AT shahrokhrezaei probabilisticperformanceassessmentofseismicallyexcitedbuildingswithsemiactivefluidviscousdampers |