Journal of Materials and Engineering Structures
Volume 10, Numéro 4, Pages 551-568
2023-12-30

Efficient Prediction Of Axial Load-bearing Capacity Of Concrete Columns Reinforced With Frp Bars Using Gbrt Model



Authors : Nguyen Xuan-bang . Nguyen Trong-ha . Thi Nguyen Kieu-vinh . Thi Nguyen Thanh-tung . Nguyen Duy-duan .

Abstract

The behavior of concrete columns reinforced with fiber reinforced polymer (FRP) bars is different from conventional reinforced concrete columns due to the mechanical properties of FRP bars. This study develops a novel machine learning (ML) model, namely gradient boosting regression tree (GBRT), for efficiently predicting the axial load-bearing capacity (ALC) of concrete columns reinforced with FRP bars. A data base containing 283 experimental results is collected to develop the ML model. Seven code-based and empirical-based equations are also included in comparison with the developed ML models. Moreover, we also propose a multiple linear regression (MLR)-based formula for calculating the ALC of the FRP-concrete column. The performance results of GBRT model are compared with those of published formulas and the proposed MLR-based formula. Statistical properties including R^2, RMSE, and a20-index are calculated to evaluate the accuracy of those predictive models. The comparisons demonstrate that GBRT outperforms other models with very high R^2 values and small RMSE. Moreover, the influence of input parameters on the predicted ALC isevaluated. Finally, an efficient graphical user interface tool is developed to simplify the practical design process of FRP-concrete columns.

Keywords

Concrete column reinforced with FRP bars ; Axial load-carrying capacity ; Gradient boosting regression tree; Graphical user interface

Les articles similaires

Experimental Study Of The Long-term Shortening Of Reinforced Concrete Columns Under Maintaining Concentric Axial Load

Tran Ngoc Long .  Tran The Truyen .  Nguyen Manh Hung .  Truong Van Quyet . 
pages 269-278.

Experimental Study Of Short Concrete Columns Reinforced With Gfrp Bars Under Monotonic Loading

Dang Vu Hiep .  Nguyen Phan Duy .  Le Vinh An . 
pages 711-716.

Seismic Retrofitting: Reinforced Concrete Shear Wall Versus Cfrp Reinforced Concrete Using Pushover Analysis

Riyad Y. .  Kissi B. .  Mrani I. .  Parron M.a. .  Dolores R.c.m. . 
pages 181-195.

Analysis Of Bearing Capacity Of Bored Piles From Bi-directional Load Test: A Case Study In Quang Ngai Province

Do Huu-dao .  Pham Van-ngoc .  Puppala Anand J. .  Nguyen Duc-manh . 
pages 627-632.

Numerical Study Of The Influence Of Turbulent Regime On The Load Capacity Of A Hydrostatic Journal Bearing

Nemchi Amina .  Bouzidane Ahmed .  Abed Asma . 
pages 55-59.

Formats de citation