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The Behavior of Supporting Structures with Pretension Anchors by Geotechnical Softwares

Ahmadi, Alireza | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49544 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Ahmadi, Mohammad Mehdi
  7. Abstract:
  8. In recent years, due to urban expansion and population growth, number of floors and excavations depth has increased. Stabilization of excavations is one of the most important issues in geotechnical engineering. Today, one of the most widely used methods that is used in deep excavations is brace soil by steels and pretension them. In this thesis tries to evaluate static behavior of flexible supporting structures with pretension anchors by using PLAXIS2D, FLAC3D and GEOSTUDIO softwares. The objective of this modeling is better understanding the static behavior of walls, comparing the two and three dimensional modeling and the effect of corners of excavation on deformation. The results shows that the three dimensional modeling by FLAC3D results in less deformation than two dimensional modeling with assuming plane strain condition in PLAXIS2D. Increase of internal friction angle, modulus of elasticity, cohesion of soil, unloading per loading modulus ratio, reducing the piles spacing, reducing the distance of the first pile from corner of excavation, increasing the free length of anchors and increasing the pretension force of anchors results in deceasing displacements
  9. Keywords:
  10. Three Dimensional Modeling ; Case Study ; Anchored Walls ; FLAC Software ; Plaxis Software ; Steel Brace ; Excavation ; Prestressing ; Excavation Corner

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