A New Device for Dissipating Energy and Attenuating Dynamic Excitations
- سال انتشار: 1382
- محل انتشار: چهارمین کنفرانس بین المللی زلزله شناسی و مهندسی زلزله
- کد COI اختصاصی: SEE04_AP12
- زبان مقاله: انگلیسی
- تعداد مشاهده: 2450
نویسندگان
Assistant Professor, Department of Civil Engineering, Sharif University of Technology,
Professor, Department of Civil and Environmental Engineering, Imperial College of
Professor , Department of Civil Engineering, University of Nebraska-Lincoln
چکیده
A new energy-dissipating device, which works based on material deformation, was developed. The mechanical behaviour of this device was studied through numerical modelling, using Finite Element Methods (FEM). The nonlinear study of the behaviour of the device led to a load-displacement curve which, to a great degree, represented an elastic-perfectly plastic response. The device was devised to be used in various circumstances in an energy-dissipating as well as response-reducing capacity. In particular, it was originally meant to be used for connecting bridge girders of a fast track railroad, located in an earthquake-prone area in the South East Asia, to their piers, to damp the earthquake excitations in the horizontal plane and normal to the traffic.In this regard, the responses of the bridge girders to various previous earthquake records, including those of El-Centro (1940), Kobe (1995), Loma Prieta (1989),Northridge (1994), Taiwan (1999), and Turkey (1999), were worked out and studied numerically. They were further compared with those of their device-free (rigidly-connected) counterparts. It is shown that by using this device, various dynamic response parameters of the system, particularly the ‘base shear,’ were drastically attenuated and reduced.کلیدواژه ها
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.