Prediction of Shear Strength for Steel-Fiber High-Strength Concrete Corbels with the Softened Strut-and-Tie Model
On the basis of the test results of nine steel-fiber high-strength concrete corbel specimens subjected to a vertical load, the influence of the steel fiber content on the shear performance of corbels was analyzed. The softened strut-and-tie model (SSTM) was used to analyze the shear strength of stee...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-04-01
|
| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/13/4/1107 |
| _version_ | 1827745511158841344 |
|---|---|
| author | Shu-Shan Li Jin-Yan Zheng Feng-Jian Zhang Hong-Mei Li Ming-Xiao Jia Zu-Jun Liu Ai-Jiu Chen Wei Xie |
| author_facet | Shu-Shan Li Jin-Yan Zheng Feng-Jian Zhang Hong-Mei Li Ming-Xiao Jia Zu-Jun Liu Ai-Jiu Chen Wei Xie |
| author_sort | Shu-Shan Li |
| collection | DOAJ |
| description | On the basis of the test results of nine steel-fiber high-strength concrete corbel specimens subjected to a vertical load, the influence of the steel fiber content on the shear performance of corbels was analyzed. The softened strut-and-tie model (SSTM) was used to analyze the shear strength of steel-fiber high-strength concrete corbels, taking into consideration the shear contribution of steel fibers. A calculation model for the shear strength of steel-fiber high-strength concrete corbels is proposed, and a database for 26 steel-fiber high-strength concrete corbels was created by using the model. The results obtained according to the codes ACI318-19, EC2, CSA A23.3-19 and the softened strut-and-tie model were compared with the experimental values to verify the rationality of the model. The findings showed that steel fiber can effectively limit the crack width and improve the crack morphology. The overall average value of the ratio between the experimental and the predicted strengths of the model was 1.082, and the variance was 0.004. The values predicted with the proposed calculation model were closer to the experimental values than those calculated according to the codes. This study provides a definite mechanical model that can reveal the shear mechanism of steel-fiber high-strength concrete. It can reasonably predict the shear strength of steel-fiber high-strength concrete corbels. |
| first_indexed | 2024-03-11T05:10:04Z |
| format | Article |
| id | doaj.art-6686ea85e755435d952a3a89a60e65e1 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T05:10:04Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-6686ea85e755435d952a3a89a60e65e12023-11-17T18:37:35ZengMDPI AGBuildings2075-53092023-04-01134110710.3390/buildings13041107Prediction of Shear Strength for Steel-Fiber High-Strength Concrete Corbels with the Softened Strut-and-Tie ModelShu-Shan Li0Jin-Yan Zheng1Feng-Jian Zhang2Hong-Mei Li3Ming-Xiao Jia4Zu-Jun Liu5Ai-Jiu Chen6Wei Xie7School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450046, ChinaSchool of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450046, ChinaSchool of Civil and Transportation Engineering, Henan University of Urban Construction, Pingdingshan 467036, ChinaSchool of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450046, ChinaSchool of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450046, ChinaSchool of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450046, ChinaSchool of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450046, ChinaSchool of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450046, ChinaOn the basis of the test results of nine steel-fiber high-strength concrete corbel specimens subjected to a vertical load, the influence of the steel fiber content on the shear performance of corbels was analyzed. The softened strut-and-tie model (SSTM) was used to analyze the shear strength of steel-fiber high-strength concrete corbels, taking into consideration the shear contribution of steel fibers. A calculation model for the shear strength of steel-fiber high-strength concrete corbels is proposed, and a database for 26 steel-fiber high-strength concrete corbels was created by using the model. The results obtained according to the codes ACI318-19, EC2, CSA A23.3-19 and the softened strut-and-tie model were compared with the experimental values to verify the rationality of the model. The findings showed that steel fiber can effectively limit the crack width and improve the crack morphology. The overall average value of the ratio between the experimental and the predicted strengths of the model was 1.082, and the variance was 0.004. The values predicted with the proposed calculation model were closer to the experimental values than those calculated according to the codes. This study provides a definite mechanical model that can reveal the shear mechanism of steel-fiber high-strength concrete. It can reasonably predict the shear strength of steel-fiber high-strength concrete corbels.https://www.mdpi.com/2075-5309/13/4/1107corbelsteel-fiber high-strength concreteshear performanceSSTMshear strength |
| spellingShingle | Shu-Shan Li Jin-Yan Zheng Feng-Jian Zhang Hong-Mei Li Ming-Xiao Jia Zu-Jun Liu Ai-Jiu Chen Wei Xie Prediction of Shear Strength for Steel-Fiber High-Strength Concrete Corbels with the Softened Strut-and-Tie Model Buildings corbel steel-fiber high-strength concrete shear performance SSTM shear strength |
| title | Prediction of Shear Strength for Steel-Fiber High-Strength Concrete Corbels with the Softened Strut-and-Tie Model |
| title_full | Prediction of Shear Strength for Steel-Fiber High-Strength Concrete Corbels with the Softened Strut-and-Tie Model |
| title_fullStr | Prediction of Shear Strength for Steel-Fiber High-Strength Concrete Corbels with the Softened Strut-and-Tie Model |
| title_full_unstemmed | Prediction of Shear Strength for Steel-Fiber High-Strength Concrete Corbels with the Softened Strut-and-Tie Model |
| title_short | Prediction of Shear Strength for Steel-Fiber High-Strength Concrete Corbels with the Softened Strut-and-Tie Model |
| title_sort | prediction of shear strength for steel fiber high strength concrete corbels with the softened strut and tie model |
| topic | corbel steel-fiber high-strength concrete shear performance SSTM shear strength |
| url | https://www.mdpi.com/2075-5309/13/4/1107 |
| work_keys_str_mv | AT shushanli predictionofshearstrengthforsteelfiberhighstrengthconcretecorbelswiththesoftenedstrutandtiemodel AT jinyanzheng predictionofshearstrengthforsteelfiberhighstrengthconcretecorbelswiththesoftenedstrutandtiemodel AT fengjianzhang predictionofshearstrengthforsteelfiberhighstrengthconcretecorbelswiththesoftenedstrutandtiemodel AT hongmeili predictionofshearstrengthforsteelfiberhighstrengthconcretecorbelswiththesoftenedstrutandtiemodel AT mingxiaojia predictionofshearstrengthforsteelfiberhighstrengthconcretecorbelswiththesoftenedstrutandtiemodel AT zujunliu predictionofshearstrengthforsteelfiberhighstrengthconcretecorbelswiththesoftenedstrutandtiemodel AT aijiuchen predictionofshearstrengthforsteelfiberhighstrengthconcretecorbelswiththesoftenedstrutandtiemodel AT weixie predictionofshearstrengthforsteelfiberhighstrengthconcretecorbelswiththesoftenedstrutandtiemodel |