Cover
Vol. 10 No. 1 (2010)

Published: June 30, 2010

Pages: 76-84

Original Article

Prediction of Ultimate Strength of Axially Loaded Reinforced Concrete Short Columns Using Artificial Neural Networks

Abstract

The present study deals with the analysis of short reinforced concrete columns subjected to axial load. One of the efficient techniques is applied, known as artificial neural networks. The descent gradient backpropagation algorithm is employed for analysis. The optimum topology (which gives the least mean square error for both training and testing with a fewer number of epochs) is presented. The effects of the number of nodes in input and hidden layer(s), and selecting of leaming rate and momentum coefficient, on the behavior of the neural network, have been investigated. Due to the slow convergence of results when using descent gradient backpropagation, the faster algorithm called "resilient backpropagation algorithm" has been used to improve the performance of the neural network and the results have been compared with those obtained using the descent gradient backpropagation algorithm.

References

  1. Auda, Rana, "Prediction Of Ultimate Moment Capacity of Composite (Steel-Concrete) Beams Using Artificial Neural Networks", M.Sc Thesis, College of Engineering, University of Basrah, 2008, 148 pp.
  2. Rafiq, M. Y., Bugmann, G. and Easterbrook, D. J., "Artificial Neural Networks to Aid Concept Design", The Structural Engineer, Vol. 78, No. 3, 2001, pp. 25-32.
  3. Lloyd, and Rangan, V., "Studies on High-Strength Concrete Columns under Eccentric Compression", ACI Structural Journal, V. 93, No. 6, Nov.-Dec. 1996, pp. 631-638.
  4. Adeli, H., and Yeh, C., "Perception learning in Engineering Design", Microcomputers in Civil Engineering, Vol. 4, No. 4, 1989, pp. 247-256.
  5. Saatcioglu, M., and Razvi, S., "High-Strength Concrete Columns with Square Sections under Concentric Compression", Journal of Structural Engineering ASCE, Vol. 124, No. 12, Dec. 1998, pp. 1438-1446.
  6. Kim, S., "Behaviour of High-Strength Concrete Columns", Ph.D. Thesis, the Graduate Faculty of North Carolina State University, 2007, 222 pp.
  7. Flood, and Kartam, N., "Neural Networks in Civil Engineering. I: Principles and Understanding", Journal of Computing in Civil Engineering, Vol. 8, No. 2, April 1994, pp. 131-148.
  8. Sanad, A., and Saka, M., "Prediction of Ultimate Shear Strength of Reinforced-Concrete Deep Beams Using Neural Networks", Journal of Structural Engineering ASCE, Vol. 127, No. 7, July 2001, pp. 818-828.
  9. Abdulyama, Abdulkhaliq, "Prediction of Ultimate Strength of Reinforced Concrete Beams Subjected to Torsion Using Artificial Neural Networks", M.Sc Thesis, College of Engineering, University of Basrah, 2008.