چکیده مقاله
This study has been performed to evaluate the effects of different input motions on the response of pure friction base isolated asymmetric buildings subjected to simultaneous three components of earthquake excitations The pure friction base isolated asymmetric building is idealized as a three dimensional single storey building resting on sliding supports The plan wise distributions of structural stiffness are asymmetric relative to the xand y axes Thus, the center of rigidity CR of the structure is eccentric relative to CM i e ex and ey However, the center of mass CM of the top mass and the base mass are assumed to be vertically aligned The sliding surface is modeled by interface rigid contact elements The frictional stresses mobilized at the sliding support have ideal coulombfriction characteristics, which is implemented in the analysis by assuming elasto plastic behavior with very high initial stiffness The response of the system subjected to threecomponent including vertical component and two component excluding vertical component of earthquake excitations is investigated for different earthquakes with different characteristics The performance of asymmetric pure friction base isolated system is investigated with the help of peak response ratio of sliding to fixed base systems It is observed that the earthquake characteristics significantly affect the response of purefriction base isolated asymmetric buildings
کلیدواژهها
نویسندگان
H. Shakib
Department of Civil Engineering, Tarbiat Modares University, Tehran, Iran
M. Ahmaddieh
Department of Civil Engineering, Yazd University, Yazd, Iran
شیوه ارجاع
H. Shakib, and M. Ahmaddieh, ,1382,A Study on The Response of Pure-Friction Base Isolated Asymmetric Buildings Subjected to Simultaneous Three Components of Earthquake Excitations,6th International Conference on Civil Engineering,Isfahan
ارائهشده در
مجموعه مقالات ششمین کنفرانس بین المللی مهندسی عمران15 اردیبهشت 1382 · اصفهان