Gaussian-based data augmentation for improved prediction of axial capacity of UHPC-jacketed rectangular RC columns
Email:
hoangviethai@utc.edu.vn
Từ khóa:
Gaussian-based data augmentation; ultra-high-performance concrete; machine learning.
Tóm tắt
Accurate prediction of the axial load-carrying capacity of reinforced concrete (RC) columns strengthened with ultra-high-performance concrete (UHPC) jackets is essential for reliable structural design. However, experimental data for UHPC-jacketed RC columns are scarce due to high costs and complex testing procedures, limiting the generalization of data-driven models. This study proposes a Gaussian-based data augmentation framework to enhance the predictive performance of machine learning models for estimating the axial capacity of UHPC-jacketed rectangular RC columns. An experimental database compiled from the literature is statistically analyzed, and Gaussian distribution-based techniques are employed to generate synthetic samples while preserving the statistical characteristics of the original data. Several machine learning models are developed and evaluated, with testing performed exclusively on the original experimental dataset to ensure unbiased generalization assessment. The results show that the best-performing model, CatBoost, exhibits poor generalization when trained solely on experimental data, achieving a test R² of 0.526 with MAE = 328.1 kN, MAPE = 33.5%, and RMSE = 540.9 kN. After Gaussian-based data augmentation, CatBoost performance improves substantially, reaching a test R² of 0.943, with MAE = 145.51 kN, MAPE = 10.5%, and RMSE = 222.1 kN. These results confirm that Gaussian-based data augmentation significantly enhances prediction accuracy, robustness, and generalization. The proposed framework offers a practical solution for mitigating data scarcity and supports reliable design and assessment of UHPC-strengthened RC columns.Tài liệu tham khảo
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[13]. J. Chen, Z. Wang, A. Xu, J. Zhou, Compressive Behavior of Corroded RC Columns Strengthened With Ultra-High Performance Jacket, Frontiers in Materials, 9 (2022). https://doi.org/10.3389/fmats.2022.859620
[14]. R.M.I.R. Susilorini and Y. Kusumawardaningsih, Advanced Study of Columns Confined by Ultra-High-Performance Concrete and Ultra-High-Performance Fiber-Reinforced Concrete Confinements, Fibers, (2023) 11. https://doi.org/10.3390/fib11050044
[15]. M.A. Alamoodi, M. Zahid, B.H. Adu Bakar, B.A. Tayeh, A.M. Zeyad, Behavior of damaged reinforced concrete columns retrofitted with ultra-high performance fiber reinforced concrete jackets under uniaxial loading, Journal of Building Engineering, 108 (2025) 112837. https://doi.org/10.1016/j.jobe.2025.112837
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[17]. H. Shehab, A. Eisa, A. M. Wahba, P. Sabol, D. Katunsky, Strengthening of Reinforced Concrete Columns Using Ultra-High Performance Fiber-Reinforced Concrete Jacket. 13 (2023) 2036. https://doi.org/10.3390/buildings13082036
[2]. S. A. Dadvar, D. Mostofinejad, H. Bahmani, Strengthening of RC columns by ultra-high performance fiber reinforced concrete (UHPFRC) jacketing, Construction and Building Materials, 235 (2020) 117485. https://doi.org/10.1016/j.conbuildmat.2019.117485
[3]. L.D. Tolentino, Effect of ultra-high performance concrete repair layer thickness on the behavior of concrete columns, 25 (2024) 1801-1818. https://doi.org/10.1002/suco.202300165
[4]. H. W. Tian, Experimental and numerical investigation on square concrete-filled UHPC tubular columns under axial compression. Structures, 70 (2024) 107655. https://doi.org/10.1016/j.istruc.2024.107655
[5]. M. Bolbolvand, S.M. Tavakkoli, F.J. Alaee, Prediction of compressive and flexural strengths of ultra-high-performance concrete (UHPC) using machine learning for various fiber types, Construction and Building Materials, 493 (2025) 143135. https://doi.org/10.1016/j.conbuildmat.2025.143135
[6]. V.H. Hoang, T.A Do, A. T. Tran, X. H Nguyen, Flexural capacity of reinforced concrete slabs retrofitted with ultra-high-performance concrete and fiber-reinforced polymer, Innovative Infrastructure Solutions, 9 (2024). https://doi.org/10.1007/s41062-024-01410-y
[7]. Eurocode 2: Design of concrete structures - Part 1: General rules and rules for buildings. Brussels, Belgium, 1992.
[8]. W.Z. Taffese, Y. Zhu, Explainable machine learning for predicting flexural capacity of reinforced UHPC beams, Engineering Structures, 343 (2025) 121188. https://doi.org/10.1016/j.engstruct.2025.121188
[9]. T.G. Wakjira, A. Abushanab, and M.S. Alam, Hybrid machine learning model and predictive equations for compressive stress-strain constitutive modelling of confined ultra-high-performance concrete (UHPC) with normal-strength steel and high-strength steel spirals. Engineering Structures, 304 (2024) 117633. https://doi.org/10.1016/j.engstruct.2024.117633
[10]. C. Bishop, Pattern Recognition and Machine Learning, Springer, 2006, p.p 140-155.
[11]. C. Chokwitthaya, Y. Zhu, S. Mukhopadhyay, A. Jafari, Applying the Gaussian Mixture Model to generate large synthetic data from a small dataset, Conference Proceeding in Construction Research Congress 2020: Computer Applications, 2020.
[12]. R.M. ENAMI, Reforço de pilares curtos de concreto armado por encamisamento com concreto de ultra-alto desempenho, in Escola de Engenharia de São Carlos, PhD Thesis, University of São Paulo, Brazil, 2017.
[13]. J. Chen, Z. Wang, A. Xu, J. Zhou, Compressive Behavior of Corroded RC Columns Strengthened With Ultra-High Performance Jacket, Frontiers in Materials, 9 (2022). https://doi.org/10.3389/fmats.2022.859620
[14]. R.M.I.R. Susilorini and Y. Kusumawardaningsih, Advanced Study of Columns Confined by Ultra-High-Performance Concrete and Ultra-High-Performance Fiber-Reinforced Concrete Confinements, Fibers, (2023) 11. https://doi.org/10.3390/fib11050044
[15]. M.A. Alamoodi, M. Zahid, B.H. Adu Bakar, B.A. Tayeh, A.M. Zeyad, Behavior of damaged reinforced concrete columns retrofitted with ultra-high performance fiber reinforced concrete jackets under uniaxial loading, Journal of Building Engineering, 108 (2025) 112837. https://doi.org/10.1016/j.jobe.2025.112837
[16]. A.I.B. Farouk, W. Rong, J. Zhu, Compressive behavior of ultra-high-performance-normal strength concrete (UHPC-NSC) column with the longitudinal grooved contact surface, Journal of Building Engineering, 68 (2023) 106074. https://doi.org/10.1016/j.jobe.2023.106074.
[17]. H. Shehab, A. Eisa, A. M. Wahba, P. Sabol, D. Katunsky, Strengthening of Reinforced Concrete Columns Using Ultra-High Performance Fiber-Reinforced Concrete Jacket. 13 (2023) 2036. https://doi.org/10.3390/buildings13082036
Tải xuống
Chưa có dữ liệu thống kê
Nhận bài
20/12/2025
Nhận bài sửa
09/05/2026
Chấp nhận đăng
12/05/2026
Xuất bản
15/05/2026
Chuyên mục
Công trình khoa học
Kiểu trích dẫn
Hoang Viet, H., Le Dac, H., Tran Thi Bich, T., & Bui Thanh, T. (1778778000). Gaussian-based data augmentation for improved prediction of axial capacity of UHPC-jacketed rectangular RC columns. Tạp Chí Khoa Học Giao Thông Vận Tải, 77(4), 371-384. https://doi.org/10.47869/tcsj.77.4.3
