671017.pdf

PLAXIS file is opened, values of input

parameters are changed, and then numerical

model is run

Saving
obtained
outputs in a
text file

Producing the first generation

Are the above steps repeatedNp

(=20) times?

Decoding the parameters

Error function calculation

Start

Determination of

variation interval for

each parameter

Converting the values of

parameters into binary system

strings by random or by getting

from the user

D

No

Yes

A

(a)

Converting the problem of finding the maximum

response into a minimum one and calculation of

the new fitness value

string selection for crossover and mutation stage)

Entrance to the selection stage with a probability

proportional to fitness value of each string

The given pair of

strings selected for

crossover stage?

Calculation of the relative fitness value (probability of

A

Finding the 6 elite chromosomes

with the least values for error function

Transforming separate probabilities into accumulative

ones

Deciding whether to cross over each pair of

subsequent strings with a probability of 85 % or not

Yes

BC

No

(b)

Figure 8: Continued.