Evaluating the Usage of Polystyrene Protection Behind the Buried Pipelines on Dynamic Response of Soil Slope with using a 1g Shaking Table

Azargoon, Amirbahador | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49283 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Jafarzadeh, Fardin
  7. Abstract:
  8. Studying of slope stability under dynamic loading such as earthquakes is one of the critical issues. This importance is attributed to many of the slopes are located in urban areas, either around them or in the important buildings and infrastructure. Thus, evaluation of slope’s behavior is very essential. On the other hand, preparing fundamental arrangements to improve the current situation, surrounding and buried areas in the slope is necessary.
    In this study, a physical model of Tehran's slopes by 0.1 ratio with pipes that have been retrofitted by plastofoam developed. This model was tested on the shaking table under dynamic loading. The dimensions of the slope were 1 meter width, 3 meters length, and 3.1 meters height, which was made from Babolsar’s sand. Several instruments, such as accelerometer and displacement gauge were employed on this slope. In addition, white lines were drawn to determine the type and amount of soil mass movement on the slopes. The developed model was tested under harmonic loading with the frequency of 5 Hz, which consisted of three stages loading with the same domain and one stage with higher amplitude domain. The accelerometer and displacement gauge’s responses were compared with experiments that had different situations from the test results. Also, 30 slopes were studied that had the potential to damage in an earthquake in Tehran. The slopes with higher risk were simulated in the Studio Geo software with quasi-static model and safety factors of slopes under dynamic loading were studied
  9. Keywords:
  10. Dynamic Response ; Slope ; Shaking Table ; Physical Modeling ; Slope Stability ; Slope Retrofit

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