چکیده مقاله
In traditional methods of seismic design, structures have been designed on the basis that members remain elastic under weak earthquake while they exceed elastic zone under severe earthquakes, but the method of the modern design criteria, structure performance i e displacement,… has been defined as the basis of design instead of using member forces In other words performance design has been replaced strength design Self centering dampers SCd are such dampers which show no residual deformation They are capable of recovering their original shapes after the removal of external forces These dampers represent moderate energy dissipating capacity and consist of re centering components group and an energy dissipating components group Residual drift is an important index for structure's damages so using these dampers that vanish residual drift decrease damage of structures In this research the impact of self centering devices on seismic performance of steel frames has investigated For this purpose a five story building has modeled in OpenSees software with and without self centering device, each structure has analyzed using nonlinear time history analysis with considering 3 earthquake records Results show that SCd would eliminates residual drift as well as decreasing in maximum drift of each story So we could conclude that SCd increase the structure's performance
کلیدواژهها
نویسندگان
Elyar Zafarkhah
M Sc Student of Structural Engineering, Faculty of Civil Engineering, Sharif University of Technolog
Nicka Keipour
Elyar Zafarkhah M.Sc Student of Structural Engineering, Faculty of Civil Engineering, Sharif University of TechnologAmirhossein Hassanieh
Amirhossein Hassanieh
Elyar Zafarkhah M.Sc Student of Structural Engineering, Faculty of Civil Engineering, Sharif University of TechnologNicka Keipour
شیوه ارجاع
Zafarkhah, Elyar and Keipour, Nicka and Hassanieh, Amirhossein,1391,Assessment of seismic behavior of buildings retrofitted with self-centering dampers based on non-linear dynamic analysis,9th International Congress on Civil Engineering,Isfahan
ارائهشده در
مجموعه مقالات نهمین کنگره بین الملی مهندسی عمران19 اردیبهشت 1391 · اصفهان