Evaluation of Seismic Performance Factors for High-rise Steel Structures with Diagrid System
| العنوان: | Evaluation of Seismic Performance Factors for High-rise Steel Structures with Diagrid System |
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| المؤلفون: | Payam Ashtari, Morteza Sohrabi-Haghighat |
| المصدر: | KSCE Journal of Civil Engineering. 23:4718-4726 |
| بيانات النشر: | Springer Science and Business Media LLC, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | business.industry, Diagonal, Structural system, 0211 other engineering and technologies, 02 engineering and technology, Structural engineering, Static analysis, Amplification factor, Incremental Dynamic Analysis, Seismic analysis, OpenSees, Deflection (engineering), 021105 building & construction, business, 021101 geological & geomatics engineering, Civil and Structural Engineering, Mathematics |
| الوصف: | Diagrid system is a new tubular structural system in tall buildings which requires seismic performance factors (R, Ω0, Cd) for seismic design according to the loading and design codes. By considering the fact that the current codes do not include these factors, this paper aims to evaluate them based on the FEMA P695 methodology. For this purpose, five archetypes have been developed in a way that the structure story heights and span lengths are respectively equal to 4 and 6 meters; this makes the diagonal angles equal to 53.13 degrees. The response modification coefficient (R-factor) of the archetypes was calculated by the Uang method through iteration in analysis and design in OpenSees and ETABS software, respectively. Two types of analysis were carried out: non-linear static analysis (pushover analysis) and non-linear incremental dynamic analysis (IDA); the first evaluates ductility, μT, and over-strength factors, Ω, and the second evaluates “collapse margin ratio (CMR)”. At the end, computed “adjusted collapse margin ratio (ACMR)” was controlled by acceptable values of ACMR in the FEMA P695. Based on the results, the values of R-factor, over-strength factor, Ω0, and deflection amplification factor, Cd, are proposed to be 2.5, 2.0 and 2.5, respectively. |
| تدمد: | 1976-3808 1226-7988 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::1a65b7bbe3802265bc3ca253f27ac6f8 https://doi.org/10.1007/s12205-019-1546-4 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........1a65b7bbe3802265bc3ca253f27ac6f8 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 19763808 12267988 |
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