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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| Format: | Article |
| Language: | English |
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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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| _version_ | 1849319851901845504 |
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| author | Saeed Najafi Shahin Borzoo Kaveh Saboohian Hadi Aboutalebi |
| author_facet | Saeed Najafi Shahin Borzoo Kaveh Saboohian Hadi Aboutalebi |
| author_sort | Saeed Najafi |
| collection | DOAJ |
| description | 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%. |
| format | Article |
| id | doaj-art-536a1bc721f949a4bdee36e7dcabf984 |
| institution | Kabale University |
| issn | 2345-4296 2783-3941 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | K. N. Toosi University of Technology |
| record_format | Article |
| series | Numerical Methods in Civil Engineering |
| spelling | doaj-art-536a1bc721f949a4bdee36e7dcabf9842025-08-20T03:50:17ZengK. N. Toosi University of TechnologyNumerical Methods in Civil Engineering2345-42962783-39412025-04-0194415010.61186/NMCE.2505.1088222271Evaluation of seismic performance of steel frames with Y-shape braces under far-field and near-field earthquakesSaeed Najafi0Shahin Borzoo1Kaveh Saboohian2Hadi Aboutalebi3PhD Student, Department of Earthquake Engineering, Tarbiat Modares University, Tehran, IranAssistant professor, Civil Engineering Department, Technical University of Buein Zahra, Buein Zahra, Qazvin, IranPhD Student, Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, IranPhD Student, Department of Civil Engineering, Shahrkurd Branch, Islamic Azad University, Shahrkurd, Iran.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%.https://nmce.kntu.ac.ir/article_222271_0f0b58f1d1e0e5c1f0d7d7ff7cdaf55a.pdfnonlinear dynamic analysisy-shape bracingnear-field and far-field earthquakenonlinear dissipated energyplastic hinge |
| spellingShingle | Saeed Najafi Shahin Borzoo Kaveh Saboohian Hadi Aboutalebi Evaluation of seismic performance of steel frames with Y-shape braces under far-field and near-field earthquakes Numerical Methods in Civil Engineering nonlinear dynamic analysis y-shape bracing near-field and far-field earthquake nonlinear dissipated energy plastic hinge |
| title | Evaluation of seismic performance of steel frames with Y-shape braces under far-field and near-field earthquakes |
| title_full | Evaluation of seismic performance of steel frames with Y-shape braces under far-field and near-field earthquakes |
| title_fullStr | Evaluation of seismic performance of steel frames with Y-shape braces under far-field and near-field earthquakes |
| title_full_unstemmed | Evaluation of seismic performance of steel frames with Y-shape braces under far-field and near-field earthquakes |
| title_short | Evaluation of seismic performance of steel frames with Y-shape braces under far-field and near-field earthquakes |
| title_sort | evaluation of seismic performance of steel frames with y shape braces under far field and near field earthquakes |
| topic | nonlinear dynamic analysis y-shape bracing near-field and far-field earthquake nonlinear dissipated energy plastic hinge |
| url | https://nmce.kntu.ac.ir/article_222271_0f0b58f1d1e0e5c1f0d7d7ff7cdaf55a.pdf |
| work_keys_str_mv | AT saeednajafi evaluationofseismicperformanceofsteelframeswithyshapebracesunderfarfieldandnearfieldearthquakes AT shahinborzoo evaluationofseismicperformanceofsteelframeswithyshapebracesunderfarfieldandnearfieldearthquakes AT kavehsaboohian evaluationofseismicperformanceofsteelframeswithyshapebracesunderfarfieldandnearfieldearthquakes AT hadiaboutalebi evaluationofseismicperformanceofsteelframeswithyshapebracesunderfarfieldandnearfieldearthquakes |