Predictive models for the peak stress and ultimate strain of FRP confined concrete cylinders with inclined fiber orientations
It is proved that fiber orientation significantly affects the confinement of fiber-reinforced polymer (FRP) wrapped concrete members. The inclination of fiber relative to the hoop direction reduces confinement effectivity. In addition, most available models for peak stress and ultimate strain of con...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-06-01
|
| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123023001718 |
| _version_ | 1797802818405400576 |
|---|---|
| author | Nima Gharaei-Moghaddam Alireza Arabshahi Mohammadreza Tavakkolizadeh |
| author_facet | Nima Gharaei-Moghaddam Alireza Arabshahi Mohammadreza Tavakkolizadeh |
| author_sort | Nima Gharaei-Moghaddam |
| collection | DOAJ |
| description | It is proved that fiber orientation significantly affects the confinement of fiber-reinforced polymer (FRP) wrapped concrete members. The inclination of fiber relative to the hoop direction reduces confinement effectivity. In addition, most available models for peak stress and ultimate strain of confined concrete fail to provide accurate estimations for FRP-wrapped concrete in such cases. Accordingly, the main objective of the present study is to suggest modification factors that can be applied to the existing predictive models in the case of inclined fiber orientation and improve their prediction accuracy. For this purpose, a database of experimental results on FRP-confined concrete columns with inclined fiber orientation from previous studies have been collected. Then, by using an evolutionary algorithm, modification factors were proposed to incorporate the effect of fiber orientation. Applying these modification factors to the existing stress and strain models for FRP-confined concrete cylinders leads to a more accurate estimation of the behavior of FRP-confined columns with inclined fibers. |
| first_indexed | 2024-03-13T05:11:25Z |
| format | Article |
| id | doaj.art-d8590707a5504273a810bad0ea55b375 |
| institution | Directory Open Access Journal |
| issn | 2590-1230 |
| language | English |
| last_indexed | 2024-03-13T05:11:25Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj.art-d8590707a5504273a810bad0ea55b3752023-06-16T05:10:43ZengElsevierResults in Engineering2590-12302023-06-0118101044Predictive models for the peak stress and ultimate strain of FRP confined concrete cylinders with inclined fiber orientationsNima Gharaei-Moghaddam0Alireza Arabshahi1Mohammadreza Tavakkolizadeh2Civil Engineering Department, Ferdowsi University of Mashhad, IranCivil Engineering Department, Ferdowsi University of Mashhad, IranCorresponding author.; Civil Engineering Department, Ferdowsi University of Mashhad, IranIt is proved that fiber orientation significantly affects the confinement of fiber-reinforced polymer (FRP) wrapped concrete members. The inclination of fiber relative to the hoop direction reduces confinement effectivity. In addition, most available models for peak stress and ultimate strain of confined concrete fail to provide accurate estimations for FRP-wrapped concrete in such cases. Accordingly, the main objective of the present study is to suggest modification factors that can be applied to the existing predictive models in the case of inclined fiber orientation and improve their prediction accuracy. For this purpose, a database of experimental results on FRP-confined concrete columns with inclined fiber orientation from previous studies have been collected. Then, by using an evolutionary algorithm, modification factors were proposed to incorporate the effect of fiber orientation. Applying these modification factors to the existing stress and strain models for FRP-confined concrete cylinders leads to a more accurate estimation of the behavior of FRP-confined columns with inclined fibers.http://www.sciencedirect.com/science/article/pii/S2590123023001718FRP confined ConcreteFiber orientationEffective confinement pressureUltimate strengthUltimate strainFiber deviation |
| spellingShingle | Nima Gharaei-Moghaddam Alireza Arabshahi Mohammadreza Tavakkolizadeh Predictive models for the peak stress and ultimate strain of FRP confined concrete cylinders with inclined fiber orientations Results in Engineering FRP confined Concrete Fiber orientation Effective confinement pressure Ultimate strength Ultimate strain Fiber deviation |
| title | Predictive models for the peak stress and ultimate strain of FRP confined concrete cylinders with inclined fiber orientations |
| title_full | Predictive models for the peak stress and ultimate strain of FRP confined concrete cylinders with inclined fiber orientations |
| title_fullStr | Predictive models for the peak stress and ultimate strain of FRP confined concrete cylinders with inclined fiber orientations |
| title_full_unstemmed | Predictive models for the peak stress and ultimate strain of FRP confined concrete cylinders with inclined fiber orientations |
| title_short | Predictive models for the peak stress and ultimate strain of FRP confined concrete cylinders with inclined fiber orientations |
| title_sort | predictive models for the peak stress and ultimate strain of frp confined concrete cylinders with inclined fiber orientations |
| topic | FRP confined Concrete Fiber orientation Effective confinement pressure Ultimate strength Ultimate strain Fiber deviation |
| url | http://www.sciencedirect.com/science/article/pii/S2590123023001718 |
| work_keys_str_mv | AT nimagharaeimoghaddam predictivemodelsforthepeakstressandultimatestrainoffrpconfinedconcretecylinderswithinclinedfiberorientations AT alirezaarabshahi predictivemodelsforthepeakstressandultimatestrainoffrpconfinedconcretecylinderswithinclinedfiberorientations AT mohammadrezatavakkolizadeh predictivemodelsforthepeakstressandultimatestrainoffrpconfinedconcretecylinderswithinclinedfiberorientations |