Accounting for Resilience in the Selection of R Factors for a RC Unsymmetrical Building
Several design codes consider the non-linear response of a building by using one of the most important seismic parameters, called the response reduction factor (R). The lack of a detailed description of the R factor selection creates the need for a deeper study. This paper emphasises a methodology f...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/3/1316 |
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| author | S. Prasanth Goutam Ghosh Praveen Kumar Gupta Claudia Casapulla Linda Giresini |
| author_facet | S. Prasanth Goutam Ghosh Praveen Kumar Gupta Claudia Casapulla Linda Giresini |
| author_sort | S. Prasanth |
| collection | DOAJ |
| description | Several design codes consider the non-linear response of a building by using one of the most important seismic parameters, called the response reduction factor (R). The lack of a detailed description of the R factor selection creates the need for a deeper study. This paper emphasises a methodology for the selection of a proper R factor based on resilience aspects. Unsymmetrical/irregular buildings have become the most common in recent times due to aesthetic purposes. However, because of the complexity due to the torsional effect, the selection of the R factor is even more difficult for this type of building. Therefore, a high-rise G+10-storey L-shaped building is herein considered. The building has re-entrant corners based on the structural/plan arrangement. Different R factors were used in the building design, considering buildings subjected to both unidirectional and bidirectional seismic loading scenarios. The building response with respect to various R factors (R equal to 3, 4, 5 and 6) in terms of its performance level, functionality, damage ratio and resilience was assessed at two design levels, i.e., design basic earthquake (DBE) and maximum considered earthquake (MCE). The study concludes that, considering the above criteria along with the resilience aspect, a maximum R factor up to 4 can be recommended for unidirectional loading, whereas for bidirectional loading, the maximum recommended R factor is 3. |
| first_indexed | 2024-03-11T09:54:03Z |
| format | Article |
| id | doaj.art-717ba9907a6640dcacf12085e45820b2 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T09:54:03Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-717ba9907a6640dcacf12085e45820b22023-11-16T16:03:39ZengMDPI AGApplied Sciences2076-34172023-01-01133131610.3390/app13031316Accounting for Resilience in the Selection of R Factors for a RC Unsymmetrical BuildingS. Prasanth0Goutam Ghosh1Praveen Kumar Gupta2Claudia Casapulla3Linda Giresini4Department of Civil Engineering, Motilal Nehru National Institute of Technology Allahabad, Prayagraj 211004, IndiaDepartment of Civil Engineering, Motilal Nehru National Institute of Technology Allahabad, Prayagraj 211004, IndiaDepartment of Civil Engineering, GLA University, Mathura 281406, IndiaDepartment of Structures for Engineering and Architecture, University of Napoli Federico II, 80134 Napoli, ItalyDepartment of Structural and Geotechnical Engineering, Sapienza University of Rome, 00184 Rome, ItalySeveral design codes consider the non-linear response of a building by using one of the most important seismic parameters, called the response reduction factor (R). The lack of a detailed description of the R factor selection creates the need for a deeper study. This paper emphasises a methodology for the selection of a proper R factor based on resilience aspects. Unsymmetrical/irregular buildings have become the most common in recent times due to aesthetic purposes. However, because of the complexity due to the torsional effect, the selection of the R factor is even more difficult for this type of building. Therefore, a high-rise G+10-storey L-shaped building is herein considered. The building has re-entrant corners based on the structural/plan arrangement. Different R factors were used in the building design, considering buildings subjected to both unidirectional and bidirectional seismic loading scenarios. The building response with respect to various R factors (R equal to 3, 4, 5 and 6) in terms of its performance level, functionality, damage ratio and resilience was assessed at two design levels, i.e., design basic earthquake (DBE) and maximum considered earthquake (MCE). The study concludes that, considering the above criteria along with the resilience aspect, a maximum R factor up to 4 can be recommended for unidirectional loading, whereas for bidirectional loading, the maximum recommended R factor is 3.https://www.mdpi.com/2076-3417/13/3/1316seismic resiliencebuilding functionalityductility demandresponse reduction factorperformance level |
| spellingShingle | S. Prasanth Goutam Ghosh Praveen Kumar Gupta Claudia Casapulla Linda Giresini Accounting for Resilience in the Selection of R Factors for a RC Unsymmetrical Building Applied Sciences seismic resilience building functionality ductility demand response reduction factor performance level |
| title | Accounting for Resilience in the Selection of R Factors for a RC Unsymmetrical Building |
| title_full | Accounting for Resilience in the Selection of R Factors for a RC Unsymmetrical Building |
| title_fullStr | Accounting for Resilience in the Selection of R Factors for a RC Unsymmetrical Building |
| title_full_unstemmed | Accounting for Resilience in the Selection of R Factors for a RC Unsymmetrical Building |
| title_short | Accounting for Resilience in the Selection of R Factors for a RC Unsymmetrical Building |
| title_sort | accounting for resilience in the selection of r factors for a rc unsymmetrical building |
| topic | seismic resilience building functionality ductility demand response reduction factor performance level |
| url | https://www.mdpi.com/2076-3417/13/3/1316 |
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