Optimum dimensions of hydraulic structures and foundation using genetic algorithm coupled with artificial neural network
Other Title(s)
الأبعاد المثلى لتراكيب الحماية و لأرضية منشأت هيدروليكية باستخدام مدمج خوارزمية جينية و نموذج شبكة عصبية اصطناعية
Joint Authors
Salih, Mayy Samir
al-Suhaili, Rafi Hashim Shakir
Abbud, Diya Wajid
Source
Issue
Vol. 23, Issue 9 (30 Sep. 2017), pp.1-22, 22 p.
Publisher
University of Baghdad College of Engineering
Publication Date
2017-09-30
Country of Publication
Iraq
No. of Pages
22
Main Subjects
Abstract EN
A model using the artificial neural networks and genetic algorithm technique is developed for obtaining optimum dimensions of the foundation length and protections of small hydraulic structures.
The procedure involves optimizing an objective function comprising a weighted summation of the state variables.
The decision variables considered in the optimization are the upstream and downstream cutoffs lengths and their angles of inclination, the foundation length, and the length of the downstream soil protection.
These were obtained for a given maximum difference in head, depth of impervious layer and degree of anisotropy.
The optimization carried out is subjected to constraints that ensure a safe structure against the uplift pressure force and sufficient protection length at the downstream side of the structure to overcome an excessive exit gradient.
The Geo-studio software was used to analyze 1200 different cases.
For each case the length of protection (L) and volume of structure (V) required to satisfy the safety factors mentioned previously were estimated for the input values, namely, the upstream cutoff depth (S1), the downstream cutoff depth (S2), the foundation width (B), the angle of inclination of the upstream cutoff (Ɵ1) and the angle of inclination of the downstream cutoff (Ɵ2), H (difference head), kr (degree of anisotropy) and D (depth of impervious layer).
An ANN model was developed and verified using these cases input-output sets as its data base.
A MatLAB code was written to perform a genetic algorithm optimization modeling coupled with this ANN model using a formulated optimization model.
A sensitivity analysis was done for selecting the cross-over probability, the mutation probability and level, the number of population, the position of the crossover and the weights distribution for all the terms of the objective function.
Results indicate that the most factors that affects the optimum solution is the number of population required.
The minimum value that gives stable global optimum solution of this parameter is (30000) while other variables have little effect on the optimum solution.
American Psychological Association (APA)
al-Suhaili, Rafi Hashim Shakir& Abbud, Diya Wajid& Salih, Mayy Samir. 2017. Optimum dimensions of hydraulic structures and foundation using genetic algorithm coupled with artificial neural network. Journal of Engineering،Vol. 23, no. 9, pp.1-22.
https://search.emarefa.net/detail/BIM-793972
Modern Language Association (MLA)
Salih, Mayy Samir…[et al.]. Optimum dimensions of hydraulic structures and foundation using genetic algorithm coupled with artificial neural network. Journal of Engineering Vol. 23, no. 9 (Sep. 2017), pp.1-22.
https://search.emarefa.net/detail/BIM-793972
American Medical Association (AMA)
al-Suhaili, Rafi Hashim Shakir& Abbud, Diya Wajid& Salih, Mayy Samir. Optimum dimensions of hydraulic structures and foundation using genetic algorithm coupled with artificial neural network. Journal of Engineering. 2017. Vol. 23, no. 9, pp.1-22.
https://search.emarefa.net/detail/BIM-793972
Data Type
Journal Articles
Language
English
Notes
Includes appendices : p. 11-22
Record ID
BIM-793972