Analytical study of the effect of LRB isolators positioning at the base and inter-story levels on seismic response of RC buildings
In this study, the effect of isolators positioning at three Levels and different arrangements on seismic response of RC buildings are investigated. For this purpose 18 RC building of 4, 8 and 12 story with and without lead rubber bearing (LRB) isolators were selected. The LRB isolators positioned at...
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| Format: | Article |
| Language: | fas |
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Iranian Society of Structrual Engineering (ISSE)
2021-03-01
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| Series: | Journal of Structural and Construction Engineering |
| Subjects: | |
| Online Access: | https://www.jsce.ir/article_82946_74d5e0c22d14ca1caf0a42b26f7c17ed.pdf |
| _version_ | 1818752280199954432 |
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| author | Ebrahim Zamani beydokhti Amir Mohammad Taghavi Hamed Kouhestanian |
| author_facet | Ebrahim Zamani beydokhti Amir Mohammad Taghavi Hamed Kouhestanian |
| author_sort | Ebrahim Zamani beydokhti |
| collection | DOAJ |
| description | In this study, the effect of isolators positioning at three Levels and different arrangements on seismic response of RC buildings are investigated. For this purpose 18 RC building of 4, 8 and 12 story with and without lead rubber bearing (LRB) isolators were selected. The LRB isolators positioned at three Levels and five different arrangements were modeled in Opensees software. The near field and far fault earthquakes were added to the frames and incremental dynamic analysis was performed. The fragility curves base on inter-story drift ratio as well as the IDA curves base on maximum inter-story drift ratio, maximum base shear, maximum roof displacement and acceleration versus peak ground accelerations (PGA) were plotted and compared. The results showed that among the isolated structures, the isolator positioning at the level of below the first floor (type 1 and type 2) had the best performance in reducing responses. The positioning type 1 (MSI-1) resulted the best decreasing in inter-story drift ratio and base shear. In addition, this type of isolator had the best increasing the PGA according to median fragility between the different types of the positioning levels. The recommended type of isolator had the best performance, especially in high rise buildings in severe damage levels. |
| first_indexed | 2024-12-18T04:48:57Z |
| format | Article |
| id | doaj.art-548c2311b40344d38b34cf5aa6235a37 |
| institution | Directory Open Access Journal |
| issn | 2476-3977 2538-2616 |
| language | fas |
| last_indexed | 2024-12-18T04:48:57Z |
| publishDate | 2021-03-01 |
| publisher | Iranian Society of Structrual Engineering (ISSE) |
| record_format | Article |
| series | Journal of Structural and Construction Engineering |
| spelling | doaj.art-548c2311b40344d38b34cf5aa6235a372022-12-21T21:20:28ZfasIranian Society of Structrual Engineering (ISSE)Journal of Structural and Construction Engineering2476-39772538-26162021-03-0181426110.22065/jsce.2019.155463.170382946Analytical study of the effect of LRB isolators positioning at the base and inter-story levels on seismic response of RC buildingsEbrahim Zamani beydokhti0Amir Mohammad Taghavi1Hamed Kouhestanian2Assistant Professor, department of Civil Engineering. Shahrood University of Technology, Shahrood, IranFaculty of Civil Engineering, Shahrood University of Technology, IranFaculty of Civil Engineering, Shahrood University of Technology, Shahrood, Iran.In this study, the effect of isolators positioning at three Levels and different arrangements on seismic response of RC buildings are investigated. For this purpose 18 RC building of 4, 8 and 12 story with and without lead rubber bearing (LRB) isolators were selected. The LRB isolators positioned at three Levels and five different arrangements were modeled in Opensees software. The near field and far fault earthquakes were added to the frames and incremental dynamic analysis was performed. The fragility curves base on inter-story drift ratio as well as the IDA curves base on maximum inter-story drift ratio, maximum base shear, maximum roof displacement and acceleration versus peak ground accelerations (PGA) were plotted and compared. The results showed that among the isolated structures, the isolator positioning at the level of below the first floor (type 1 and type 2) had the best performance in reducing responses. The positioning type 1 (MSI-1) resulted the best decreasing in inter-story drift ratio and base shear. In addition, this type of isolator had the best increasing the PGA according to median fragility between the different types of the positioning levels. The recommended type of isolator had the best performance, especially in high rise buildings in severe damage levels.https://www.jsce.ir/article_82946_74d5e0c22d14ca1caf0a42b26f7c17ed.pdfincremental dynamic analysis (ida)lead rubber bearing (lrb)fragility curvesnear faultearthquakesfar field earthquakes |
| spellingShingle | Ebrahim Zamani beydokhti Amir Mohammad Taghavi Hamed Kouhestanian Analytical study of the effect of LRB isolators positioning at the base and inter-story levels on seismic response of RC buildings Journal of Structural and Construction Engineering incremental dynamic analysis (ida) lead rubber bearing (lrb) fragility curves near fault earthquakes far field earthquakes |
| title | Analytical study of the effect of LRB isolators positioning at the base and inter-story levels on seismic response of RC buildings |
| title_full | Analytical study of the effect of LRB isolators positioning at the base and inter-story levels on seismic response of RC buildings |
| title_fullStr | Analytical study of the effect of LRB isolators positioning at the base and inter-story levels on seismic response of RC buildings |
| title_full_unstemmed | Analytical study of the effect of LRB isolators positioning at the base and inter-story levels on seismic response of RC buildings |
| title_short | Analytical study of the effect of LRB isolators positioning at the base and inter-story levels on seismic response of RC buildings |
| title_sort | analytical study of the effect of lrb isolators positioning at the base and inter story levels on seismic response of rc buildings |
| topic | incremental dynamic analysis (ida) lead rubber bearing (lrb) fragility curves near fault earthquakes far field earthquakes |
| url | https://www.jsce.ir/article_82946_74d5e0c22d14ca1caf0a42b26f7c17ed.pdf |
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