Title: Predicting the shear resistance of RC beams without shear reinforcement using a Bayesian neural network

Authors: Osimen Iruansi; Maurizio Guadagnini; Kypros Pilakoutas; Kyriacos Neocleous

Addresses: Centre for Cement and Concrete, Department of Civil and Structural Engineering, The University of Sheffield, Sheffield S1 3JD, UK. ' Centre for Cement and Concrete, Department of Civil and Structural Engineering, The University of Sheffield, Sheffield S1 3JD, UK. ' Centre for Cement and Concrete, Department of Civil and Structural Engineering, The University of Sheffield, Sheffield S1 3JD, UK. ' Centre for Cement and Concrete, Department of Civil and Structural Engineering, The University of Sheffield, Sheffield S1 3JD, UK

Abstract: Advances in neural computing have shown that a neural learning approach that uses Bayesian inference can essentially eliminate the problem of over fitting, which is common with conventional back-propagation neural networks. In addition, Bayesian neural network can provide the confidence (error) associated with its prediction. This paper presents the application of Bayesian learning to train a multilayer perceptron network to predict the shear resistance of reinforced concrete beams without shear reinforcement. The automatic relevance determination technique was employed to assess the relative importance of the different input variables considered in this study on the shear resistance of reinforced concrete beams. The performance of the Bayesian neural network is examined and discussed along with that of current shear design provisions.

Keywords: Bayesian learning; neural networks; reinforced concrete beams; shear resistance; uncertainty modelling; shear reinforcement.

DOI: 10.1504/IJRS.2012.044299

International Journal of Reliability and Safety, 2012 Vol.6 No.1/2/3, pp.82 - 109

Available online: 16 Dec 2011 *

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