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Behavior of Geosynthetic Reinforced Soil Under Isolated Foundations
Chapter 2: literature Review8
2.1 Introduction:8
2.2 The Soil Reinforcement Concept9
2.3 Types of Soil Reinforcement11
2.3.1 Natural fibers11
2.3.2 Manufactured (man-made) fibers13
2.4 Behavior of Reinforced Soil17
2.4.1 Principle17
2.4.2 Factors Affecting the Behavior of Reinforced Soil:19
2.4.3 Influence of Fill Material:19
2.4.4 Influence of Reinforcement Characteristics:19
2.4.5 Interaction Between Soil and Geosynthetic21
2.4.6 Measurement of Soil-Reinforcement Interaction:22
2.5 Laboratory Testing.28
2.6 Effect on Peak Strength29
2.7 Concluding Remarks31
Chapter 3 Modeling of Foundations and Soil using Finite Element Method33
3.1 Introduction33
3.2 Steps and Procedure of finite Element Method33
3.2.1 Step 1 Discretize and Select the Element Types33
3.2.2 Step 2 Select a Displacement Function34
3.2.3 Step 3 Define the Strain/Displacement and Stress/Strain Relationships34
3.2.4 Step 4 Derive the Element Stiffness Matrix and Equations34
3.2.5 Step 5 Assemble the Element Equations to Obtain the Global35
3.2.6 Step 6 Solve for the Unknown Degrees of Freedom (or Generalized Displacements) 35
3.2.7 Step 7 Solve for the Element Strains and Stresses36
3.2.8 Step 8 Interpret the Results36
3.3 Finite Element Modeling of Reinforced Soil36
3.3.1 Modeling of Foundations36
3.3.2 Modeling of soil37
3.3.3 Soil Foundation Interaction38
3.3.4 Material Modeling39
3.3.5 Material Modeling of Foundation and soil39
3.3.6 Material Modeling of Contact Element (surface to surface)41
3.3.7 Surface-to-Surface Contact Elements42
Chapter 4 Modeling of Reinforced Soil and Foundations using ANSYS44
4.1 Introduction44
4.2 Modeling of Reinforced Soil44
4.3 Soil and Geosynthetic Meshing Generation50
4.4 Application of Loading52
4.5 Model Validation53
4.6 Parametric Study61
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