Seismic fragility analysis of low-rise unreinforced masonry buildings subjected to near- and far-field ground motions
Unreinforced masonry (URM) is considered one of the most cost-effective structural typologies for low-rise buildings in seismic regions. Near-field (NF) ground motions are sometimes characterized by high-velocity pulses that are typically more destructive than far-field (FF) seismic events. Therefor...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-06-01
|
| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123023003481 |
| _version_ | 1797802707098009600 |
|---|---|
| author | Amirhosein Shabani Maria Zucconi Delaram Kazemian Mahdi Kioumarsi |
| author_facet | Amirhosein Shabani Maria Zucconi Delaram Kazemian Mahdi Kioumarsi |
| author_sort | Amirhosein Shabani |
| collection | DOAJ |
| description | Unreinforced masonry (URM) is considered one of the most cost-effective structural typologies for low-rise buildings in seismic regions. Near-field (NF) ground motions are sometimes characterized by high-velocity pulses that are typically more destructive than far-field (FF) seismic events. Therefore, a seismic fragility analysis of low-rise URM building typologies subjected to NF and FF seismic events was performed. Four URM walls were chosen, and nonlinear models of the walls were developed based on the double-modified, multiple vertical line element model (DM-MVLEM). The zero-moment coefficient was used to determine the effective uncracked section length of a pier. This parameter must be calculated for each pier of a perforated URM wall to derive the maximum shear strength of the piers used in a nonlinear model development process. A simplified analytical method was proposed to obtain the zero-moment coefficient factor of piers by performing linear static analysis on nine perforated walls and regression analyses of the results. Subsequently, nonlinear pushover analysis was performed to derive the capacity curves, and the damage limit states were defined for each model according to the Eurocode 8 standard. Subsequently, incremental dynamic analysis (IDA) was performed for each case study by applying FF and NF ground motions. Finally, fragility curves were developed based on the IDA results for each damage limit state. The susceptibilities of one- and two-story URM walls subjected to FF and NF seismic events were investigated by examining the derived fragility curves. |
| first_indexed | 2024-03-13T05:10:46Z |
| format | Article |
| id | doaj.art-442aedc30467411688dee9fed9fd85b2 |
| institution | Directory Open Access Journal |
| issn | 2590-1230 |
| language | English |
| last_indexed | 2024-03-13T05:10:46Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj.art-442aedc30467411688dee9fed9fd85b22023-06-16T05:11:19ZengElsevierResults in Engineering2590-12302023-06-0118101221Seismic fragility analysis of low-rise unreinforced masonry buildings subjected to near- and far-field ground motionsAmirhosein Shabani0Maria Zucconi1Delaram Kazemian2Mahdi Kioumarsi3Department of Built Environment, Oslo Metropolitan University, Pilestredet 35, 0166, Oslo, Norway; Corresponding author.Department of Engineering, University Niccolò Cusano, Via Don Carlo Gnocchi, 3, 00166, Rome, ItalyDepartment of Civil Engineering, Norwegian University of Science and Technology, Høgskoleringen 1, 7034, Trondheim, NorwayDepartment of Built Environment, Oslo Metropolitan University, Pilestredet 35, 0166, Oslo, NorwayUnreinforced masonry (URM) is considered one of the most cost-effective structural typologies for low-rise buildings in seismic regions. Near-field (NF) ground motions are sometimes characterized by high-velocity pulses that are typically more destructive than far-field (FF) seismic events. Therefore, a seismic fragility analysis of low-rise URM building typologies subjected to NF and FF seismic events was performed. Four URM walls were chosen, and nonlinear models of the walls were developed based on the double-modified, multiple vertical line element model (DM-MVLEM). The zero-moment coefficient was used to determine the effective uncracked section length of a pier. This parameter must be calculated for each pier of a perforated URM wall to derive the maximum shear strength of the piers used in a nonlinear model development process. A simplified analytical method was proposed to obtain the zero-moment coefficient factor of piers by performing linear static analysis on nine perforated walls and regression analyses of the results. Subsequently, nonlinear pushover analysis was performed to derive the capacity curves, and the damage limit states were defined for each model according to the Eurocode 8 standard. Subsequently, incremental dynamic analysis (IDA) was performed for each case study by applying FF and NF ground motions. Finally, fragility curves were developed based on the IDA results for each damage limit state. The susceptibilities of one- and two-story URM walls subjected to FF and NF seismic events were investigated by examining the derived fragility curves.http://www.sciencedirect.com/science/article/pii/S2590123023003481Low-rise buildingsSeismic fragilityUnreinforced masonryNear-field ground motionsPulse-like ground motions |
| spellingShingle | Amirhosein Shabani Maria Zucconi Delaram Kazemian Mahdi Kioumarsi Seismic fragility analysis of low-rise unreinforced masonry buildings subjected to near- and far-field ground motions Results in Engineering Low-rise buildings Seismic fragility Unreinforced masonry Near-field ground motions Pulse-like ground motions |
| title | Seismic fragility analysis of low-rise unreinforced masonry buildings subjected to near- and far-field ground motions |
| title_full | Seismic fragility analysis of low-rise unreinforced masonry buildings subjected to near- and far-field ground motions |
| title_fullStr | Seismic fragility analysis of low-rise unreinforced masonry buildings subjected to near- and far-field ground motions |
| title_full_unstemmed | Seismic fragility analysis of low-rise unreinforced masonry buildings subjected to near- and far-field ground motions |
| title_short | Seismic fragility analysis of low-rise unreinforced masonry buildings subjected to near- and far-field ground motions |
| title_sort | seismic fragility analysis of low rise unreinforced masonry buildings subjected to near and far field ground motions |
| topic | Low-rise buildings Seismic fragility Unreinforced masonry Near-field ground motions Pulse-like ground motions |
| url | http://www.sciencedirect.com/science/article/pii/S2590123023003481 |
| work_keys_str_mv | AT amirhoseinshabani seismicfragilityanalysisoflowriseunreinforcedmasonrybuildingssubjectedtonearandfarfieldgroundmotions AT mariazucconi seismicfragilityanalysisoflowriseunreinforcedmasonrybuildingssubjectedtonearandfarfieldgroundmotions AT delaramkazemian seismicfragilityanalysisoflowriseunreinforcedmasonrybuildingssubjectedtonearandfarfieldgroundmotions AT mahdikioumarsi seismicfragilityanalysisoflowriseunreinforcedmasonrybuildingssubjectedtonearandfarfieldgroundmotions |