The Effect of Core Shape on the Seismic Behavior of Earth-fill Dams

  • سال انتشار: 1396
  • محل انتشار: نشریه انگلیسی مهندسی عمران و سازه، دوره: 1، شماره: 2
  • کد COI اختصاصی: JR_JCESE-1-2_001
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 542
دانلود فایل این مقاله

نویسندگان

Masoud Gohari

M.Sc. Department of Civil Engineering, Islamic Azad University, Tabriz, Iran;

Ahmad Avarideh

M.Sc. Department of Civil Engineering, Islamic Azad University, Tabriz, Iran;

چکیده

The two-dimensional study of the seismic behavior during an earthquake and earthquake resistant designs of earth fill dams usually are studied by assuming plane-strain problems. For a given earthquake loading, the results of the dynamic analysis depend on many parameters of which the core shape contributes more. The present study is concerned analysis of the seismic response of earth dams affected by different core shapes. In addition to the material properties and the shape of the dam body, foundation and abutments, the core shapes can amplify or attenuate the input earthquake loading during seismic analysis of earth fill dams. This paper evaluated the influence of core shape on behavior of earth fill dams during earthquake. All sections are described using the simple and popular non associated Mohr-Coulomb criterion. Results reported in this paper represent 3D numerical parametric study of an earth fill dams subjected to earthquake loading and 3D effects on its seismic performance. Emphasis is put on the effects of the core shape on vertical stress, pore water pressure and settlements. Also, the arching ratio and the acceleration response are taken into account during analysis. The assumed 3D model is simulated in finite difference numerical code, FLAC3D. Results regarding the importance of the core shape on the seismic response of earth fill dams show that in different sections of dams by increasing the core slope, pore water pressure increases. On the other hand, dam s settlement is affected by the core shape. In fact, by increasing the core slope, the settlement decreases. Also, the core shape have little effect on vertical stress and arching.

کلیدواژه ها

Seismic behavior, Earth fill dam, Core shape, Mohr-Coulomb, Flac3D

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.