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Landslide Hazard Study
A conceptual account of numerical method
16 April 2015 Geotechnical Laboratory, WIHG, Dehradun
Landslide
Hazard Study
Regional Scale
Statistical
Analysis (GIS)
Bivariate Multivariate
Threshold
Model
Local Scale
Numerical
Method
Continuum Discontinuum Hybrid
Conventional
Method
Artificial
Neural
Network
16 April 2015 Geotechnical Laboratory, WIHG, Dehradun
16 April 2015 Geotechnical Laboratory, WIHG, Dehradun
Numerical Method; Continuum vs. Discontinuum
Principle of Finite Element Method (FEM)
16 April 2015 Geotechnical Laboratory, WIHG, Dehradun
Numerical Method; Continuum Approach
Slope Model without discretization Slope Model with discretization
6 node triangular
element
16 April 2015 Geotechnical Laboratory, WIHG, Dehradun
Numerical Method; Continuum Approach- Different Noded Elements
3 Noded 6 Noded
4 Noded 8 Noded
FEM; Governing equations
16-04-2015 Geotechnical Lab, WIHG 6
Force
Strain
Displacement
Stress
Equilibrium
Equation
Constitutive
Equation
Strain-
Displacement
Relation
Compatibility
Equation
Virtual Work
16 April 2015 Geotechnical Laboratory, WIHG, Dehradun
Numerical Method; Phase 2 Software
Phase 2
Project Setting
General
Number of
Stage
Analysis Type
Solver Type
Units
Stress analysis
Number of
iteration
Tolerance
Convergence
Type
Groundwater
Condition
Method
Fluid’s Unit
Weight
Strength
Reduction
Field Stress
Constant
Gravity
Mesh Setting
Mesh Type
Element Type
Material
Property
Material
Nature
Isotropic
Transverse
Isotropic
Orthotropic
Failure
Criteria
M-C
GHB
16 April 2015 Geotechnical Laboratory, WIHG, Dehradun
Numerical Method; Continuum Approach; Other Methods
FDM FVM
BEM Meshless
Dis-continuum Approach; Principle
16 April 2015 Geotechnical Laboratory, WIHG, Dehradun
Numerical Method
Slope Model without blocking Slope Model with blocks
Rigid
Deformable
Thank You
16 April 2015 Geotechnical Laboratory, WIHG, Dehradun

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14

  • 1. Landslide Hazard Study A conceptual account of numerical method 16 April 2015 Geotechnical Laboratory, WIHG, Dehradun
  • 2. Landslide Hazard Study Regional Scale Statistical Analysis (GIS) Bivariate Multivariate Threshold Model Local Scale Numerical Method Continuum Discontinuum Hybrid Conventional Method Artificial Neural Network 16 April 2015 Geotechnical Laboratory, WIHG, Dehradun
  • 3. 16 April 2015 Geotechnical Laboratory, WIHG, Dehradun Numerical Method; Continuum vs. Discontinuum
  • 4. Principle of Finite Element Method (FEM) 16 April 2015 Geotechnical Laboratory, WIHG, Dehradun Numerical Method; Continuum Approach Slope Model without discretization Slope Model with discretization 6 node triangular element
  • 5. 16 April 2015 Geotechnical Laboratory, WIHG, Dehradun Numerical Method; Continuum Approach- Different Noded Elements 3 Noded 6 Noded 4 Noded 8 Noded
  • 6. FEM; Governing equations 16-04-2015 Geotechnical Lab, WIHG 6 Force Strain Displacement Stress Equilibrium Equation Constitutive Equation Strain- Displacement Relation Compatibility Equation Virtual Work
  • 7. 16 April 2015 Geotechnical Laboratory, WIHG, Dehradun Numerical Method; Phase 2 Software Phase 2 Project Setting General Number of Stage Analysis Type Solver Type Units Stress analysis Number of iteration Tolerance Convergence Type Groundwater Condition Method Fluid’s Unit Weight Strength Reduction Field Stress Constant Gravity Mesh Setting Mesh Type Element Type Material Property Material Nature Isotropic Transverse Isotropic Orthotropic Failure Criteria M-C GHB
  • 8. 16 April 2015 Geotechnical Laboratory, WIHG, Dehradun Numerical Method; Continuum Approach; Other Methods FDM FVM BEM Meshless
  • 9. Dis-continuum Approach; Principle 16 April 2015 Geotechnical Laboratory, WIHG, Dehradun Numerical Method Slope Model without blocking Slope Model with blocks Rigid Deformable
  • 10. Thank You 16 April 2015 Geotechnical Laboratory, WIHG, Dehradun