کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
285622 | 509207 | 2010 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Evaluating response modification factors of concentrically braced steel frames Evaluating response modification factors of concentrically braced steel frames](/preview/png/285622.png)
Response modification factor is one of the seismic design parameters to consider nonlinear performance of building structures during strong earthquake. Relying on this, many seismic design codes led to reduce loads. The present paper tries to evaluate the response modification factors of conventional concentric braced frames (CBFs) as well as buckling restrained braced frames (BRBFs). Since, the response modification factor depends on ductility and overstrength, the static nonlinear analysis has been performed on building models including single and double bracing bays, multi-floors and different brace configurations (chevron VV, invert VV and XX bracing). The CBFs and BRBFs values for factors such as ductility, overstrength, force reduction due to ductility and response modification have been assessed for all the buildings. The results showed that the response modification factors for BRBFs were higher than the CBFs one. It was found that the number of bracing bays and height of buildings have had greater effect on the response modification factors.
Journal: Journal of Constructional Steel Research - Volume 66, Issue 10, October 2010, Pages 1196–1204