آمار
| تعداد نشریات | 37 |
| تعداد شماره‌ها | 924 |
| تعداد مقالات | 11,092 |
| تعداد مشاهده مقاله | 11,664,693 |
| تعداد دریافت فایل اصل مقاله | 10,704,575 |
Investigating the effects of geometric parameters of buckling restrained braces on the cyclic behavior of buckling restrained braced frames | ||
| نشریه مهندسی عمران و محیط زیست دانشگاه تبریز | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 20 دی 1399 | ||
| نوع مقاله: مقاله کامل پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22034/jcee.2021.37823.1899 | ||
| نویسندگان | ||
احسان دهقانی   1؛ نرگس بابایی2؛ علیرضا زرین اقبال3
| ||
| 1گروه مهندسی عمران، دانشکده فنی و مهندسی، دانشگاه قم، قم، ایران | ||
| 2گروه مهندسی عمران، دانشگاه شهید باهنر، کرمان، ایران | ||
| 3گروه سازه، دانشکده مهندسی عمران، پردیس دانشکده‌های فنی دانشگاه تهران، تهران، ایران | ||
| چکیده | ||
| Today, the buckling-restrained bracing frames (BRBFs) are widely used as a new system contributing to the absorption of a high amount of energy through yielding of the buckling-restrained brace (BRB) core when exposed to compression and tension. The relatively high cost of exploitation of this system has prompted researchers to seek for ways to reduce the costs while providing seismic performance. The present study was carried out to investigate the effect of the ratio of the yielding segment cross-sectional area to the elastic segment cross-sectional area as well as the length of the yielding segment to the total length of the BRB core on energy absorption demand of these braces in different stories of the BRB frames. For this purpose, two 5-and-10-story BRB frames have been modeled, then the nonlinear time-history analysis was performed. Using the results, the energy absorption demand of braces with different ratios of the yielding segment cross-sectional area to the elastic segment as well as the length of the yielding segment to the total length of the BRB core has been calculated. The results indicated that the variation of these ratios in the BRB can be effective in the amount of energy absorption demand of, in addition, the nature of this effect depended on the braced story in the BRB frame. However, the effect of stiffness modification factor on the uniformity of the energy absorption demand of braces in different stories is insignificant compared to the changes in the cross-sectional area of braces in different stories. | ||
| کلیدواژه‌ها | ||
| Buckling-restrained brace؛ Energy absorption demand؛ Cyclic behavior؛ Buckling-restrained bracing frame؛ Stiffness modification factor | ||
|
آمار تعداد مشاهده مقاله: 75 |
||
