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Experimental investigation and predictive modeling of shear performance for concrete-encased steel beams using artificial neural networks

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Abstract

This manuscript employs a highly efficient artificial intelligence (AI) technique for machine learning (ML) through artificial neural networks (ANNs) and introduces a novel numerical predictive model capable of accurately forecasting the shear capacity of concrete-encased steel (CES) beams. The research begins by conducting shear tests on nine CES beams with high-strength steel, which addresses a significant gap in the shear performance of high-strength steel in CES beams. Subsequently, a comprehensive database of CES beam shear tests is established to train and validate the ANN model. The database consists of 242 sets of test data, compiled from published literature, encompassing a wide range of geometrical and material properties. A sensitivity analysis of the proposed model is then performed using a Pearson chi-square test to determine the relative importance of each input parameter on shear strength. Furthermore, a thorough examination is conducted to assess the impact of each parameter. Finally, the proposed predictive model is compared against current design codes, including ANSI/AISC 360–16 (USA, North America), BS EN 1994-1-1:2004 (Europe), and JGJ 138–2016 (China, Asia). The comparison reveals that ML technology exhibits higher accuracy and robustness in predicting shear bearing capacity.

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Authors and Affiliations

Authors

Contributions

WJ: Resources, Supervision, Project administration, Funding acquisition, Writing—Review & Editing, Visualization, Supervision. CM: Term, Conceptualization, Methodology, Software, Validation, Formal analysis, Investigation, Data Curation, Writing—Original Draft, Writing—Review & Editing, Visualization, Supervision.

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Correspondence to Menglin Cui.

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We affirm that the work presented in this manuscript has not been published in any language and is not currently under consideration in any other journal. Furthermore, there are no conflicts of interest to declare. All authors have contributed to, reviewed, and approved this submitted manuscript in its current form.

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Appendices

Appendix A

Tables

Table 6 Experimental data used for ANN model

6 and

Table 7 Comparison of experimentally and numerically predicted shear strength

7.

Appendix B: The weight and bias for the ANN model

$${X}^{T}=\left({f}_{c} , B ,D ,{\rho }_{sh} ,{\rho }_{sw} ,{f}_{yw} , \lambda ,{p}_{r}\right)$$
$${W}_{1}=\left(\begin{array}{cc}\begin{array}{cc}\begin{array}{c}\begin{array}{c}\begin{array}{c}-0.0311\\ -0.0010\end{array}\\ \begin{array}{c}-0.0030\\ +0.0848\end{array}\end{array}\\ \begin{array}{c}\begin{array}{c}-0.3684\\ +0.0040\end{array}\\ \begin{array}{c}+0.8720\\ -4.5948\end{array}\end{array}\end{array}& \begin{array}{c}\begin{array}{c}\begin{array}{c}-0.0553\\ +0.0247\end{array}\\ \begin{array}{c}-0.0122\\ -5.8023\end{array}\end{array}\\ \begin{array}{c}\begin{array}{c}-2.2935\\ -0.0272\end{array}\\ \begin{array}{c}+0.4644\\ -10.421\end{array}\end{array}\end{array}\end{array}& \begin{array}{cc}\begin{array}{c}\begin{array}{c}\begin{array}{c}+0.0007\\ +0.0040\end{array}\\ \begin{array}{c}+0.0053\\ +3.1074\end{array}\end{array}\\ \begin{array}{c}\begin{array}{c}+2.7683\\ +0.0047\end{array}\\ \begin{array}{c}+1.2689\\ -0.2857\end{array}\end{array}\end{array}& \begin{array}{c}\begin{array}{c}\begin{array}{c}+0.0255\\ -0.0029\end{array}\\ \begin{array}{c}+0.0041\\ +0.3077\end{array}\end{array}\\ \begin{array}{c}\begin{array}{c}+2.7727\\ -0.0206\end{array}\\ \begin{array}{c}+1.7845\\ +0.8892\end{array}\end{array}\end{array}\end{array}\end{array}\right) {B}_{1}=\left(\begin{array}{c}+2.1215\\ +13.932\\ -8.5465\\ -0.6031\end{array}\right)$$
$${W}_{2}=\left(\begin{array}{cc}\begin{array}{cc}-3.5295& -3.4323\\ -1.0791& +2.1352\end{array}& \begin{array}{cc}-0.2218& +1.1047\\ +0.0770& +1.5640\end{array}\\ \begin{array}{cc}+2.2960& +0.9730\\ -0.3449& -1.1034\end{array}& \begin{array}{cc}+0.2050& -0.3092\\ -0.0432& -0.1027\end{array}\end{array}\right) {B}_{2}=\left(\begin{array}{c}+0.2011\\ -0.0821\\ +0.4003\\ +1.6204\end{array}\right)$$
$${W}_{3}=\left(\begin{array}{c}+1180.95\\ +764.381\\ -88.7798\\ +1566.92\end{array}\right) {B}_{3}=\left(+222.636\right)$$

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Wang, J., Cui, M. Experimental investigation and predictive modeling of shear performance for concrete-encased steel beams using artificial neural networks. Mater Struct 56, 141 (2023). https://doi.org/10.1617/s11527-023-02226-5

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