Example 19: Iteration methods

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Description of the problem

One of the difficulties to apply the Continuum model to practical problems is that the long computation time. Therefore, a comparison for time and accuracy required for analysis the raft by the Continuum model is carried out by the following calculation methods:

- Modification of modulus of subgrade reaction by                iteration after Ahrens/ Winselmann (1984)

(Winkle's model/ Continuum model)

- Modulus of compressibility method for elastic raft on          layered soil medium after El Gendy (1998)

(Solving system of linear equations by iteration)

(Layered soil medium - Continuum model)

- Modulus of compressibility method for elastic raft on          layered soil medium

(Solving system of linear equations by elimination)

(Layered soil medium - Continuum model)

To evaluate the iterative procedures used in ELPLA, consider the raft shown in Figure 30. The raft has a dimension of 10 [m] × 20 [m] and 0.6 [m] thickness.

 

 Example 19: Iteration methods

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