University of Tehran Civil Engineering Infrastructures Journal 2322-2093 59 1 2026 06 01 Hybrid Neuro-Fuzzy ML and MC Simulation-Based Reliability Analysis of Simply Supported Beam 45 63 98359 10.22059/ceij.2024.374883.2045 EN Abhishek Kumar Ph.D. Candidate, Department of Civil Engineering, National Institute of Technology, Patna, India. 0009-0002-9192-6820 Baboo Rai Associate Professor, Department of Civil Engineering, National Institute of Technology, Patna, India. 0000-0003-2906-6479 Pijush Samui Professor, Department of Civil Engineering, National Institute of Technology, Patna, India. 0000-0003-2906-6479 Journal Article 2024 04 18 This paper introduces an innovative approach utilizing hybrid Adaptive Neuro Fuzzy Inference System (ANFIS) models for the reliability-based design of structural beams. While structural reliability analysis with hybrid ANFIS models remains largely unexplored, existing studies primarily rely on rudimentary simulation models. To address this gap, this study employs Particle Swarm Optimization (PSO) and Genetic Algorithms (GA) to enhance the performance of the ANFIS model. The Machine Learning (ML) models are validated on three Monte-Carlo datasets of size 1000, 2500, and 5000. The findings demonstrate satisfactory performance across all ML models, with the hybrid ANFIS models exhibiting superior predictive capabilities compared to traditional methods. Among the hybrid ANFIS models, ANFIS-PSO emerges as the most robust. The reliability indices and Probability of Failure (POF) values are calculated for the predicted values and compared with actual values. It is concluded that the ANFIS-PSO-based methodology is the most robust model and outperforms the other models. It is noteworthy that while the ANFIS-PSO model demonstrates exceptional performance, all models presented in this study serve as valuable tools for reliability-based structural design, offering robust alternatives to conventional methodologies. https://ceij.ut.ac.ir/article_98359_04c08b6e8ea351b5b41a40686b75b9b3.pdf