Prediction of Ultimate Strength of Reinforced Concrete Beams Subjected to Torsion using Artificial Neural Networks

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  Majid A. Alwan   |      Nabeel A. Jasim   |      Abdulkhaliq A. Jaafer   |   

Artificial Neural Networks (ANN) have been applied to structural engineering in recent years. Most of the researches is based on backpropagation neural networks due to its well-studied theory. A backpropagation neural network has been used to predict the ultimate torsional strength of reinforced concrete rectangular beams. The effects of the parameters, such as the number of nodes in the input, output, and hidden layers and the pre-processing of the training patterns, on the behaviour of the neural network, have been investigated. The algorithm called 'resilient propagation algorithm' has been used to the performance of the neural network. After training, the generalization of the neural network was tested by the patterns not included in the training patterns. Once the neural network has been trained, the ultimate torsional strength of reinforced concrete is obtained very easily and efficiently. Based on the ANN results, a parametric analysis was carried out to study the influence of parameters affecting the ultimate torsional strength of reinforced concrete beams and these results are compared with the equations of ACI-code.