An Artificial Network-Based Prediction of Key Reference Zones on Axial Stress–Strain Curves of FRP-Confined Concrete
The accurate prediction of reference points on the axial stress–axial strain relationship of fiber-reinforced polymer (FRP)-confined concrete is vital to pre-design structures made with this system. This study uses an artificial neural network (ANN) for predicting hoop rupture strain (<i>ε<...
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| Format: | Article |
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MDPI AG
2023-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/5/3038 |
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| author | Ali Fallah Pour Aliakbar Gholampour |
| author_facet | Ali Fallah Pour Aliakbar Gholampour |
| author_sort | Ali Fallah Pour |
| collection | DOAJ |
| description | The accurate prediction of reference points on the axial stress–axial strain relationship of fiber-reinforced polymer (FRP)-confined concrete is vital to pre-design structures made with this system. This study uses an artificial neural network (ANN) for predicting hoop rupture strain (<i>ε<sub>h,rup</sub></i>) and transition zone, namely transition strain (<i>ε</i><sub><i>c</i>1</sub>) and stress (<i>f’</i><sub><i>c</i>1</sub>), on axial stress–strain curves of FRP-confined concrete. These are key parameters for estimating a transition zone of stress–strain curves. In this study, accompanied with these parameters, ultimate condition parameters, including compressive strength and ultimate axial strain, were predicted using a comprehensive database. Various combinations of input data and ANN parameters were used to increase the accuracy of the predictions. A sensitivity analysis and a model validation assessment were performed to evaluate the predictability of the developed models. At the end, a comparison between the proposed models in this study and existing ANN and design-oriented models was presented. It is shown that the accuracy of the developed ANN models in this study is higher or comparable to that of existing ANN models. Additionally, the developed models in this study to predict <i>f’</i><sub><i>c</i>1</sub> and <i>ε</i><sub><i>c</i>1</sub> exhibit a higher accuracy compared to existing design-oriented models. These results indicate that the proposed ANN models capture the lateral confinement effect on ultimate and transition zones of FRP-confined concrete with a more robust performance compared to existing models. |
| first_indexed | 2024-03-11T07:30:33Z |
| format | Article |
| id | doaj.art-3eb33fc920b34cca81903dfd4df2d30c |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T07:30:33Z |
| publishDate | 2023-02-01 |
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| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-3eb33fc920b34cca81903dfd4df2d30c2023-11-17T07:18:26ZengMDPI AGApplied Sciences2076-34172023-02-01135303810.3390/app13053038An Artificial Network-Based Prediction of Key Reference Zones on Axial Stress–Strain Curves of FRP-Confined ConcreteAli Fallah Pour0Aliakbar Gholampour1School of Civil, Environmental and Mining Engineering, University of Adelaide, Adelaide, SA 5005, AustraliaCollege of Science and Engineering, Flinders University, Tonsley, SA 5042, AustraliaThe accurate prediction of reference points on the axial stress–axial strain relationship of fiber-reinforced polymer (FRP)-confined concrete is vital to pre-design structures made with this system. This study uses an artificial neural network (ANN) for predicting hoop rupture strain (<i>ε<sub>h,rup</sub></i>) and transition zone, namely transition strain (<i>ε</i><sub><i>c</i>1</sub>) and stress (<i>f’</i><sub><i>c</i>1</sub>), on axial stress–strain curves of FRP-confined concrete. These are key parameters for estimating a transition zone of stress–strain curves. In this study, accompanied with these parameters, ultimate condition parameters, including compressive strength and ultimate axial strain, were predicted using a comprehensive database. Various combinations of input data and ANN parameters were used to increase the accuracy of the predictions. A sensitivity analysis and a model validation assessment were performed to evaluate the predictability of the developed models. At the end, a comparison between the proposed models in this study and existing ANN and design-oriented models was presented. It is shown that the accuracy of the developed ANN models in this study is higher or comparable to that of existing ANN models. Additionally, the developed models in this study to predict <i>f’</i><sub><i>c</i>1</sub> and <i>ε</i><sub><i>c</i>1</sub> exhibit a higher accuracy compared to existing design-oriented models. These results indicate that the proposed ANN models capture the lateral confinement effect on ultimate and transition zones of FRP-confined concrete with a more robust performance compared to existing models.https://www.mdpi.com/2076-3417/13/5/3038FRP-confined concretehoop rupture strainartificial neural network (ANN)ultimate axial straintransition zonecompressive strength |
| spellingShingle | Ali Fallah Pour Aliakbar Gholampour An Artificial Network-Based Prediction of Key Reference Zones on Axial Stress–Strain Curves of FRP-Confined Concrete Applied Sciences FRP-confined concrete hoop rupture strain artificial neural network (ANN) ultimate axial strain transition zone compressive strength |
| title | An Artificial Network-Based Prediction of Key Reference Zones on Axial Stress–Strain Curves of FRP-Confined Concrete |
| title_full | An Artificial Network-Based Prediction of Key Reference Zones on Axial Stress–Strain Curves of FRP-Confined Concrete |
| title_fullStr | An Artificial Network-Based Prediction of Key Reference Zones on Axial Stress–Strain Curves of FRP-Confined Concrete |
| title_full_unstemmed | An Artificial Network-Based Prediction of Key Reference Zones on Axial Stress–Strain Curves of FRP-Confined Concrete |
| title_short | An Artificial Network-Based Prediction of Key Reference Zones on Axial Stress–Strain Curves of FRP-Confined Concrete |
| title_sort | artificial network based prediction of key reference zones on axial stress strain curves of frp confined concrete |
| topic | FRP-confined concrete hoop rupture strain artificial neural network (ANN) ultimate axial strain transition zone compressive strength |
| url | https://www.mdpi.com/2076-3417/13/5/3038 |
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