evaluating equivalent damping and response modification factors of frames equipped by pall friction dampers
نویسندگان
چکیده
a study on the evaluating equivalent damping and response modification factors of frames equipped by pall friction dampers is presented. to do so, buildings with various stories were considered. nonlinear and linear dynamic time history analysis has been performed to evaluate equivalent damping for pall friction dampers. ground motions with various frequency characteristics scaled with iranian earthquake resistant design code. in addition, nonlinear incremental dynamic analysis has been performed to evaluate the response modification factors. in this article, equivalent damping and seismic response modification factor for moment resisting frames with and without pall friction dampers have been determined separately. the governing parameters were identified and their influence was traced and summarized along with implications for practical design. the results show that the equivalent damping of these frames using damper is higher than frames without it. also we have this result for the response modification factors. it was also found that the number of stories have a great effect on these two characteristics of the buildings.
منابع مشابه
Evaluating Equivalent Damping and Response Modification Factors of Frames Equipped by Pall Friction Dampers
A study on the evaluating equivalent damping and response modification factors of frames equipped by Pall Friction Dampers is presented. To do so, buildings with various stories were considered. Nonlinear and linear dynamic time history analysis has been performed to evaluate equivalent damping for Pall Friction Dampers. Ground motions with various frequency characteristics scaled with Iranian ...
متن کاملEvaluating Response Modification Factors of Concentrically Braced and Special Moment Steel Frames in Duplex Buildings
Response modification factor (R-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 earthquake loads imposed to the structure. The present paper tries to evaluate the R-factors of conventional concentric braced frames (CBFs) and special moment frames (MRFs) in ...
متن کاملResponse Modification Factor of Chevron Braced Frame With Pall Friction Damper
Response modification factors (R-factor) are used in current seismic building codes to reduce earthquake forces associated with seismic design level to determine force levels. In recent years, many authors have shown great interest in the development of seismic structural systems and several theoretical and experimental studies have been conducted to investigate performance of dampers but littl...
متن کاملAnalytical assessment of reinforced concrete frames equipped with TADAS dampers
In recent years, it is considerably attempted to develop the concept of energy dissipation as an applicable technology to overcome the energy released by earthquakes. The passive control systems such as metallic dampers have been widely considered. The dampers are basically used to mitigate the structural responses and reduce the damages in main structural elements by energy dissipation. ...
متن کاملEquivalent Damping Ratios of Structures with Supplemental Viscous Dampers
The current design formulas such as those provided by FEMA273/274 for building structures with supplemental viscous dampers were derived based on the shear building assumption. However, for medium-rise to high-rise buildings that deform in a combined form of shear and bending when subjected to seismic loading, the design using existing formulas may result into an actual damping ratio much lower...
متن کاملevaluating response modification factors of concentrically braced and special moment steel frames in duplex buildings
response modification factor (r-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 earthquake loads imposed to the structure. the present paper tries to evaluate the r-factors of conventional concentric braced frames (cbfs) and special moment frames (mrfs) in ...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
journal of rehabilitation in civil engineeringناشر: semnan university
ISSN 2345-4415
دوره 1
شماره 1 2013
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023