Concrete Deterioration Effects on Dynamic Behavior of Gravity Dam-Reservoir Interaction Problems

Rasa A. Y., BUDAK A., DÜZGÜN O. A.

JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES, cilt.12, sa.1, ss.259-278, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 12 Sayı: 1
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1007/s42417-022-00842-z
  • Dergi Adı: JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.259-278
  • Anahtar Kelimeler: Dam-reservoir interaction, Ageing concrete gravity dam, Dynamic analysis, Lagrangian approach, Chemo-mechanical actions, Infinite fluid elements
  • Atatürk Üniversitesi Adresli: Evet

Özet

PurposeIn this paper, the dynamic behavior of ageing concrete gravity dam-reservoir interaction problem is investigated over the ages. The effects of ageing in concrete due to chemo-mechanical actions and the variation of sediment thicknesses over the ages are included in the numerical model.MethodsThe coupled two-dimensional finite element (FE) equations of motion for the problem are written in FORTRAN 90 programming language and are solved using direct method. The reservoir domain, in the problem, includes the compressibility and sloshing behavior of water incorporating the Lagrangian approach.ResultsThe dynamic responses of the dam such as horizontal and vertical displacements along with the fundamental periods, in its life-span, elongate due to the deterioration of concrete which decrease the seismic safety of the dam.ConclusionThe stress level at the ageing dam body differs depending on the fundamental period of the dam. Besides, there is a certain fundamental period value in which the dam body suffers from the extreme responses during its lifespan. Therefore, it is recommended that this period value should be considered in the seismic safety and design of concrete gravity dams.