Evaluation of seismic performance of steel frames with Y-shape braces under far-field and near-field earthquakes
In this study, the finite element modeling of the Y-shape bracing system is initially developed and verified. Next, the seismic performance of steel frames with Y-shape braces under far-field and near-field earthquakes was evaluated. For this purpose, seismic analysis was performed using 12 seismic...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
K. N. Toosi University of Technology
2025-04-01
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| Series: | Numerical Methods in Civil Engineering |
| Subjects: | |
| Online Access: | https://nmce.kntu.ac.ir/article_222271_0f0b58f1d1e0e5c1f0d7d7ff7cdaf55a.pdf |
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| Summary: | In this study, the finite element modeling of the Y-shape bracing system is initially developed and verified. Next, the seismic performance of steel frames with Y-shape braces under far-field and near-field earthquakes was evaluated. For this purpose, seismic analysis was performed using 12 seismic records including near-field and far-field on 4, 8, and 12-floor structures equipped with and without Y-shape bracing. A series of time history analyses were performed on the samples, which led to the precise review of the Y-shape bracing system. The results show that structures equipped with Y-shape braces have less lateral displacement and also less number and level of plastic hinges; and, the level of non-linear dissipated energy is higher in those structures. Also, the plastic hinges based on the failure indices of the structures indicate that - near-field earthquakes have a more destructive effect of about 20% higher than far earthquakes on structures equipped with Y-shape bracing. Y-shaped bracing has reduced the permanent displacement in the system by up to 30%. |
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| ISSN: | 2345-4296 2783-3941 |