Seismic collapse risk of RC-timber hybrid building with different energy dissipation connections considering NBCC 2020 hazard
Abstract The 2020 National Building Code of Canada (NBCC) seismic hazard model (SHM) marks a comprehensive update over its predecessor (NBCC 2015). For different regions in Canada, this will have an impact on the design of new buildings and performance assessment of existing ones. In the present stu...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-11-01
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| Series: | Journal of Infrastructure Preservation and Resilience |
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| Online Access: | https://doi.org/10.1186/s43065-022-00061-6 |
| _version_ | 1797988493277790208 |
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| author | Ikenna Odikamnoro Prakash S. Badal Henry Burton Solomon Tesfamariam |
| author_facet | Ikenna Odikamnoro Prakash S. Badal Henry Burton Solomon Tesfamariam |
| author_sort | Ikenna Odikamnoro |
| collection | DOAJ |
| description | Abstract The 2020 National Building Code of Canada (NBCC) seismic hazard model (SHM) marks a comprehensive update over its predecessor (NBCC 2015). For different regions in Canada, this will have an impact on the design of new buildings and performance assessment of existing ones. In the present study, a recently developed hybrid building system with reinforced concrete (RC) moment-resisting frames and cross-laminated timber (CLT) infills is assessed for its seismic performance against the latest SHM. The six-story RC-CLT hybrid system, designed using the direct displacement-based method, is located in Vancouver, Canada. Along with very high seismicity, southwestern British Columbia is characterized by complex seismotectonics, consisting of subduction, shallow crustal, and in-slab faulting mechanisms. A hazard-consistent set of 40 ground motion pairs is selected from the PEER and KiK-net databases, and used to estimate the building’s seismic performance. The effects of using steel slit dampers (associated with large hysteresis loops) and flag-shaped energy dissipators (associated with the recentering capability) are investigated. The results indicate that the hybrid system has good seismic performance with a probability of collapse of 2–3% at the 2475-year return period shaking intensity. The hybrid building with steel slit dampers exhibits a collapse margin ratio of 2.8, which increases to 3.5–3.6 when flag-shaped dissipators are used. The flag-shaped dissipators are found to significantly reduce the residual drift of the hybrid building. Additionally, the seismic performance of the hybrid building equipped with flag-shaped dissipators is found to improve marginally when the recentering ratio is increased. |
| first_indexed | 2024-04-11T08:03:43Z |
| format | Article |
| id | doaj.art-778771e3461847eb9bfecfd271c98b8f |
| institution | Directory Open Access Journal |
| issn | 2662-2521 |
| language | English |
| last_indexed | 2024-04-11T08:03:43Z |
| publishDate | 2022-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of Infrastructure Preservation and Resilience |
| spelling | doaj.art-778771e3461847eb9bfecfd271c98b8f2022-12-22T04:35:37ZengSpringerOpenJournal of Infrastructure Preservation and Resilience2662-25212022-11-013111310.1186/s43065-022-00061-6Seismic collapse risk of RC-timber hybrid building with different energy dissipation connections considering NBCC 2020 hazardIkenna Odikamnoro0Prakash S. Badal1Henry Burton2Solomon Tesfamariam3School of Engineering, University of British ColumbiaSchool of Engineering, University of British ColumbiaDepartment of Civil and Environmental Engineering, University of CaliforniaSchool of Engineering, University of British ColumbiaAbstract The 2020 National Building Code of Canada (NBCC) seismic hazard model (SHM) marks a comprehensive update over its predecessor (NBCC 2015). For different regions in Canada, this will have an impact on the design of new buildings and performance assessment of existing ones. In the present study, a recently developed hybrid building system with reinforced concrete (RC) moment-resisting frames and cross-laminated timber (CLT) infills is assessed for its seismic performance against the latest SHM. The six-story RC-CLT hybrid system, designed using the direct displacement-based method, is located in Vancouver, Canada. Along with very high seismicity, southwestern British Columbia is characterized by complex seismotectonics, consisting of subduction, shallow crustal, and in-slab faulting mechanisms. A hazard-consistent set of 40 ground motion pairs is selected from the PEER and KiK-net databases, and used to estimate the building’s seismic performance. The effects of using steel slit dampers (associated with large hysteresis loops) and flag-shaped energy dissipators (associated with the recentering capability) are investigated. The results indicate that the hybrid system has good seismic performance with a probability of collapse of 2–3% at the 2475-year return period shaking intensity. The hybrid building with steel slit dampers exhibits a collapse margin ratio of 2.8, which increases to 3.5–3.6 when flag-shaped dissipators are used. The flag-shaped dissipators are found to significantly reduce the residual drift of the hybrid building. Additionally, the seismic performance of the hybrid building equipped with flag-shaped dissipators is found to improve marginally when the recentering ratio is increased.https://doi.org/10.1186/s43065-022-00061-6Hybrid systemSeismic hazard updateCross-laminated timber wallEnergy dissipation connectionsNational Building Code of Canada (NBCC) |
| spellingShingle | Ikenna Odikamnoro Prakash S. Badal Henry Burton Solomon Tesfamariam Seismic collapse risk of RC-timber hybrid building with different energy dissipation connections considering NBCC 2020 hazard Journal of Infrastructure Preservation and Resilience Hybrid system Seismic hazard update Cross-laminated timber wall Energy dissipation connections National Building Code of Canada (NBCC) |
| title | Seismic collapse risk of RC-timber hybrid building with different energy dissipation connections considering NBCC 2020 hazard |
| title_full | Seismic collapse risk of RC-timber hybrid building with different energy dissipation connections considering NBCC 2020 hazard |
| title_fullStr | Seismic collapse risk of RC-timber hybrid building with different energy dissipation connections considering NBCC 2020 hazard |
| title_full_unstemmed | Seismic collapse risk of RC-timber hybrid building with different energy dissipation connections considering NBCC 2020 hazard |
| title_short | Seismic collapse risk of RC-timber hybrid building with different energy dissipation connections considering NBCC 2020 hazard |
| title_sort | seismic collapse risk of rc timber hybrid building with different energy dissipation connections considering nbcc 2020 hazard |
| topic | Hybrid system Seismic hazard update Cross-laminated timber wall Energy dissipation connections National Building Code of Canada (NBCC) |
| url | https://doi.org/10.1186/s43065-022-00061-6 |
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