Seismic fatality risk evaluation framework for existing buildings in Switzerland
| العنوان: | Seismic fatality risk evaluation framework for existing buildings in Switzerland |
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| المؤلفون: | Safak Arslantürkoglu, Bozidar Stojadinovic |
| المصدر: | Bulletin of Earthquake Engineering, 22 (2) |
| بيانات النشر: | Springer Science and Business Media LLC, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Compliance factor, Geophysics, SIA 269/8, Tremuri, Parallel processing, Existing buildings, Unreinforced masonry, Building and Construction, Geotechnical Engineering and Engineering Geology, Civil and Structural Engineering |
| الوصف: | The Swiss code SIA 269/8 for the seismic evaluation of existing structures is risk-based. It relies on the compliance factor αeff, defined as the ratio of the seismic capacity of an existing structure to the required seismic capacity of a hypothetical identical new structure, to indirectly evaluate the casualty risk posed by the existing structure. While it is convenient to have a direct relationship between the casualty risk and the degree of code compliance of the existing structure, it is debatable if the contributions of the seismic hazard, structural performance and occupancy to the casualty risk should be merged into a single quantity, conflicting with the multi-component nature of seismic risk. This paper presents a graphical framework to evaluate the seismic fatality risk for existing buildings. The framework is based on the PEER Center performance-based earthquake engineering methodology to provide a transparent view of the contributions of different sources of hazard and risk. Starting from a seismic hazard model, probabilistic seismic demand, damage and loss models are introduced, taking the uncertainty into account at each step. The final product of the proposed framework, a loss curve representing the (annual) exceedance rate of fatality counts, enables engineers and building owners to make better, risk-based decisions. The proposed framework is demonstrated for an existing building in Switzerland. Notably, in addition to the SIA 269/8 evaluation method, this demonstration compares eight hybrid approaches differentiated by the utilized structural assessment techniques (nonlinear static pushover vs. incremental dynamic analysis), uncertainty propagation in the demand model (record variability only vs. record variability and epistemic uncertainty) and solution strategies (closed-form vs. numerical) to find a practical compromise between the accuracy and the computational effort. A comparison of the obtained results shows that the SIA 269/8 evaluation method underestimates the fatality risk for the presented building and identifies a practical alternative based on the proposed graphical framework. Bulletin of Earthquake Engineering, 22 (2) ISSN:1570-761X ISSN:1573-1456 |
| وصف الملف: | application/application/pdf |
| تدمد: | 1573-1456 1570-761X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8c67d5f764d7ebe90aadb784f316233Test https://doi.org/10.1007/s10518-022-01558-xTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....b8c67d5f764d7ebe90aadb784f316233 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15731456 1570761X |
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