GGU-LATPILE solves the differential equation for an elastically embedded pile using the given boundary conditions.
EJ · w'''' + kS · b · w = q
with
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E = Young's modulus
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J = moment of inertia
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w = pile displacement
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kS = subgrade reaction modulus
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b = pile width
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q = load
The solution is determined numerically using the so-called finite element method.
Action boundary conditions at the pile head can be defined (see menu item "Editor 1/System input"). At the pile toe, boundary conditions are generally:
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Moment = 0.0,
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Shear force = 0.0,
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Vertical displacement = 0.0.
If you want to define a moment restraint at the pile head, select the "Editor 2/Displacement boundary conditions" menu item and enter this condition directly below the pile head:
Proceed in a similar manner if, for example, you want to set horizontal displacement to zero (0).