آنالیز قابلیت اعتماد سد خاکی با استفاده از یک روش ترکیبی جدید-مطالعه موردی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی علوم زمین دانشگاه صنعتی اراک

2 دانشجو، دانشکده مهندسی علوم زمین، دانشگاه صنعتی اراک

چکیده

تجزیه و تحلیل احتمالاتی پایداری شیروانی ابزاری برای در نظر گرفتن عدم قطعیت پارامترهای خاک در طراحی است. در این مقاله با استفاده از نرم افزار Slide ، از شبیه سازی مونت کارلو به عنوان روشی تحلیلی برای تهیه مدل‌های احتمالاتی پایداری شیروانی بر مبنای روش‌های تعادل حدی استفاده شده است. روش‌های تعادل حدی به عنوان روش‌های رابج در تحلیل پایداری شیروانی می‌باشند که با استفاده از نیرو‌های برشی در سطح لغزش تحلیل را انجام می‌دهند. در این تحقیق پارامترهایی که در مدلسازی احتمالاتی دارای عدم قطعیت هستند عبارتند از زاویه اصطکاک داخلی، چسبندگی و وزن مخصوص خاک که در مدلسازی به صورت تابع توزیع نرمال در نظر گرفته شده‌اند. در این تحقیق، برای نشان دادن قابلیت مدل‌های ارائه شده از داده‌های میدانی به دست آمده از سد رودبار لرستان (به عنوان مطالعه موردی) در ایران استفاده شده است. نتایج به دست آمده نشان می‌دهد که ترکیب روش‌های شبیه‌سازی مونت کارلو و روش‌های تعادل حدی برای ارزیابی پایداری شیروانی‌ها بطور موفقیت آمیزی قابل استفاده است.

کلیدواژه‌ها


عنوان مقاله [English]

Reliability analysis of earth dam using a new hybrid method-A case study

نویسندگان [English]

  • Hadi Fattahi 1
  • Moein Shirmohamadi 2
  • Hossein Ghaedi 2
1 Department of Earth Sciences Engineering, Arak University of Technology, Arak, Iran.
2 Arak university of technology
چکیده [English]

Probabilistic slope stability analysis provides a tool for considering uncertainty of the soil parameters in design. In this paper, using Slide software, the Monte Carlo simulation is used as an analytical method to develop probabilistic models of slope stability based on equilibrium methods. The limit equilibrium methods are the most popular approaches in slope stability analysis. These methods are well known to be a statically indeterminate problem, and assumptions on the inter-slice shear forces are required to render the problem statically determinate. In modeling using this methodology, the selected stochastic parameters are internal friction angle, cohesion and unit weight of soil, which are modeled using a truncated normal probability density function (pdf). In this research, the abilities offered using models were presented by using field data obtained from Roudbar Lorestan dam in Iran. The results obtained show that the hybrid Monte Carlo simulation and equilibrium methods can be used successfully for slopes stability assessment.

کلیدواژه‌ها [English]

  • reliability analysis
  • Earth Dam
  • slope stability
  • Monte Carlo simulation
  • limit equilibrium methods
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