Effect of Uniform Height-Wise Distribution of Ductility Demand on Seismic Plastic Energy Demands of Generic Steel Frames

سال انتشار: 1397
محل انتشار: سومین کنفرانس بین المللی یافته های نوین عمران معماری و صنعت ساختمان ایران
کد COI اختصاصی: IRCIVIL03_380
زبان مقاله: انگلیسی
تعداد مشاهده: 376

نویسندگان

Assistant professor, Department of Civil Engineering, University of Mazandaran, Babolsar, Iran

M.Sc Student, Department of Civil Engineering, University of Mazandaran, Babolsar, Iran

چکیده

The effects of uniform deformation theory on plastic seismic energy demand spectra are intensivelyinvestigated. In this regards, several generic steel moment-resisting frames are optimized by using uniform deformation approaches subjected to a series of 40 far-fault ground motions.An iterative procedure has been adopted such that the structural properties are modified so that inefficient material is gradually shifted from strong to weak areas of a structure. This process is continued until a state of uniform ductility demand is achieved.Then, the maximum plastic (hysteretic) energy demand parameters are computed for different structures designed by optimum load pattern as well as code-based pattern, and the mean plastic energy spectra are compared. Results indicate that optimum seismic load pattern can significantly affect the plastic energy demands spectra. Moreover, the mean values of hysteretic energy demand for optimum structures are significantly larger than those of corresponding structures designed by code-based patterns, which are more pronounced for low level of inelastic behavior. This phenomenon indicates that in optimum structures the seismic energy dissipation in each structural element is maximized and the material capacity is fully exploited

کلیدواژه ها

Plastic Energy demand; Uniform deformation distribution; nonlinear dynamic analysis; performance-based approach, Ductility demand

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.