نوع مقاله : مقاله کامل پژوهشی
نویسندگان
1 دانشیار، گروه مهندسی عمران، دانشگاه آزاد اسلامی، واحد ارومیه، ارومیه، ایران
2 دانشجوی کارشناسی ارشد سازه، گروه مهندسی عمران، دانشگاه آزاد اسلامی، واحد ارومیه، ارومیه، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The destructive effect of an earthquake depends on factors such as fault rupture mechanism, fault distance to the construction site, soil type, ground motion characteristics, and also on the dynamic characteristics of the structure. The aim of this study is to investigate the effect of pulsed records on the seismic safety of special reinforced concrete flexural frames optimized based on performance in high-rise buildings. In this research, OpenSees software was used for modeling and performing analyses, and MATLAB software was used to implement the performance-based optimization framework. In the first step, high-flexural frames were optimized based on performance using pushover modal analysis and linking MATLAB software with OpenSees software based on the criteria of ASCE41-17 and FEMA356 codes. In the second step, the seismic evaluation of the optimized frames, using IDA incremental dynamic analysis, fragility diagrams, and the value of the collapse margin ratio obtained were discussed and examined. Three tall concrete flexural frames of 20, 25, and 30 stories with a floor height of 3.2 meters and a span width of 6 meters are the examples studied in this study. According to the results obtained from the incremental dynamics on the aforementioned structures, the collapse capacity of the 20, 25, and 30 story frames under pulsed earthquakes is 13%, 36%, and 59% less than the collapse capacity of the aforementioned frames under non-pulsed earthquakes, respectively. On the other hand, all three designed frames are permissible in terms of seismic safety within the acceptable range according to ACMR.
کلیدواژه‌ها [English]
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