dynamic analysis of dam-reservoir-intake tower considering sediments absorption
Publish place: 4th International Conference on long-Term Behavior and Environmentally Friendly Rehabilitaion Technologies of Dams
Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
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LTBD04_029
تاریخ نمایه سازی: 25 آذر 1396
Abstract:
In this paper, dam-reservoir-intake tower system with interior water of tower are analyzed using finite element method considering sediments absorption. Reservoir is modeled by Lagrangian approach and effect of sediments absorption on responses of dam-reservoir-intake tower is considered. Three types of sediments and also distance between dam and tower are determined for parameter study. Dynamic analysis has been performed under horizontal and vertical excitation of Northridge and Tabas earthquakes. Results show that increasing distance between dam and tower, can increase hequencies of dam-reservoir-intake tower system. Also in models with rigid sediments, the frequencies of system are alittle more than model with two other kind of sediments. Dynamic responses show that increasing the distance between dam and tower reduce the effects of sediments on the dam and tower responses. It is concluded that the maximum displacements of dam crest and principal stresses of dam heel increase by increasing distance between them. In time domain responses, displacements of dam crest and principal stresses of dam heel increase in rigid sediments but sediment type has fewer effects on tower responses specially on displacements.
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Authors
ali mahdian khalili
MSc of Water Engineering and Hydraulic Structures, Babol Noshirvani University of Technology,Babol, Iran
bahram navayi neya
Associate Professor, Faculty of Civil Engineering, Babol Noshirvani University of Technology, Babol,Iran
leila kalani sarokolayi
Assistant Professor, Tabari University of Babol, Babol, Iran