Seismic analysis of rockfill dam, a case study of ghoocham dam
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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شناسه ملی سند علمی:
LTBD04_107
تاریخ نمایه سازی: 25 آذر 1396
Abstract:
Ghoocham dam is 45 m height ECRFD type with a vertical clay core and soft alluvial and rock foundation under construction in west of Iran. The study of the seismic response of rockfill dams is a complex problem that generally requires the use of dynamic methods of analysis. The non-linear analysis is established to calculate the permanent deformation caused by the earthquake. In this paper, the seismic analysis of Ghoocham dam based on non-linear approach is presented. The dynamic analyses were conducted as non-linear two-dimensional analyses using the Fast Lagrangian Analysis of Continua (FLAC) computer code. The initial condition of stress and pore pressure is performed for tl1e steady state condition. The initial condition of stress and pore pressure calculated in construction stage was performed for analysis at steady state condition. Time-acceleration histories of two different earthquakes with a magnitude of 6.9 in Richter scale and the maximum peak acceleration (PGA) of 0.47g were applied in analysis. The maximum deformation and the failure pattern are obtained through the non-linear analysis.The analysis results show that permanent deformation is in the acceptable range and stability of dam is secured after the earthquake.
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Authors
Hooman Rezaee
Rock mechanics engineer of Tahkimkav Consulting Engineers Compan
Hamidreza Hajihassani
Project Manager of Tahkimkav Consulting Engineers Company
Shahram Mahzarnia
Project Manager of Iran Water and Power Development Company