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Physical Modeling of Buried Pipelines Response due to Earthquake-Induced Landslide

Sehizadeh, Mahdi | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44003 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Jafarzadeh, Fardin
  7. Abstract:
  8. In this dissertation, the response of buried pipelines in slopes which have become unstable during earthquake induced landslides is investigated. The Sharif University of Technology shaking table was used for modeling this phenomenon.Three tests were performed so that in the first and second ones, three pipes were placed in different positions due to slope and the supports were elastic cylinders. In third test, there were four pipes with simple supports at the test-box walls.The pipes in every test were buried in the depth of 11 centimeters and they were all made of aluminum with the outside diameter of 16 millimeters and thickness of 1 millimeter. Also, they were all in the bending mode due to the slope failure.In these tests dry Babolsar sand with DR=50% was used for modeling the slope. Loading conditions in every three tests were sinusoidal harmonic with 5 Hz frequency, but the amplitude of acceleration was different in them. Also simulation laws suggested by Iai1989 were used in these tests. At the end of this dissertation, a chapter about “Retrofit of buried pipelines in the slopes against land sliding” is allocated. This chapter concerns hints that are notified by Guidelines and some issues that are not mentioned in Guidelines but can be so effective against the pipe failure due to land sliding
  9. Keywords:
  10. Buried Pipline ; Shaking Table ; Dynamic Loading ; Landslide ; Physical Model ; Sands ; Slope

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