Reinforced ultra-high performance concrete beam under flexure and shear: Experiment and theoretical model
This paper investigated the influence of different shear span ratios, longitudinal (LR) and stirrup (SR) reinforcement ratios, and material types on the flexural and shear performance of reinforced ultra-high performance concrete (UHPC) beams. A series of bending tests with shear span ratios of 4.0,...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523008276 |
| _version_ | 1797454581905489920 |
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| author | Ziwei Cai Xinzhi Duan Lingfei Liu Zhoudao Lu Junhong Ye |
| author_facet | Ziwei Cai Xinzhi Duan Lingfei Liu Zhoudao Lu Junhong Ye |
| author_sort | Ziwei Cai |
| collection | DOAJ |
| description | This paper investigated the influence of different shear span ratios, longitudinal (LR) and stirrup (SR) reinforcement ratios, and material types on the flexural and shear performance of reinforced ultra-high performance concrete (UHPC) beams. A series of bending tests with shear span ratios of 4.0, 1.5, and 1.0 were conducted. Results reveal that UHPC beams with a LR ratio of 2.53% exhibit 1.66, 2.00, and 1.45 times higher load capacity than that of the beams with a LR ratio of 1.34% at shear span ratios of 4.0, 1.5, and 1.0, respectively. A SR ratio of 1.40% can achieve 15% and 35% enhancement in load capacity of UHPC beams at shear span ratios of 1.5 and 1.0, respectively. The UHPC beams made with hybrid polyethylene and straight steel fibers have the highest load capacity compared to the beams with straight steel fibers and hooked steel fibers. The enhancement can achieve 8%, 5%, and 15% at shear span ratios of 4.0, 1.5, and 1.0, respectively. Furthermore, cross-section analysis, a novel truss-arch model, and strut-and-tie model were employed to theoretically calculate the load capacity of the UHPC beams with different failure modes. The relative errors of the cross-section analysis and truss-arch model are smaller than 9% and 25%. The findings of this work could provide guidelines for the structural design of UHPC beams under different loading conditions. |
| first_indexed | 2024-03-09T15:39:14Z |
| format | Article |
| id | doaj.art-ae96e699fdf74fcdb7078fe94f77acfb |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T15:39:14Z |
| publishDate | 2024-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-ae96e699fdf74fcdb7078fe94f77acfb2023-11-25T04:49:38ZengElsevierCase Studies in Construction Materials2214-50952024-07-0120e02647Reinforced ultra-high performance concrete beam under flexure and shear: Experiment and theoretical modelZiwei Cai0Xinzhi Duan1Lingfei Liu2Zhoudao Lu3Junhong Ye4School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China; College of Civil Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaShanghai Municipal Planning & Design Institute Co., Ltd., 609 Jianguo Road (West), Shanghai 200031, ChinaSchool of Transportation, Civil Engineering and Architecture, Foshan University, Foshan 528225, China; Corresponding authors.College of Civil Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaDepartment of Building and Real Estate, Faculty of Construction and Environment, The Hong Kong Polytechnic University, China; Corresponding authors.This paper investigated the influence of different shear span ratios, longitudinal (LR) and stirrup (SR) reinforcement ratios, and material types on the flexural and shear performance of reinforced ultra-high performance concrete (UHPC) beams. A series of bending tests with shear span ratios of 4.0, 1.5, and 1.0 were conducted. Results reveal that UHPC beams with a LR ratio of 2.53% exhibit 1.66, 2.00, and 1.45 times higher load capacity than that of the beams with a LR ratio of 1.34% at shear span ratios of 4.0, 1.5, and 1.0, respectively. A SR ratio of 1.40% can achieve 15% and 35% enhancement in load capacity of UHPC beams at shear span ratios of 1.5 and 1.0, respectively. The UHPC beams made with hybrid polyethylene and straight steel fibers have the highest load capacity compared to the beams with straight steel fibers and hooked steel fibers. The enhancement can achieve 8%, 5%, and 15% at shear span ratios of 4.0, 1.5, and 1.0, respectively. Furthermore, cross-section analysis, a novel truss-arch model, and strut-and-tie model were employed to theoretically calculate the load capacity of the UHPC beams with different failure modes. The relative errors of the cross-section analysis and truss-arch model are smaller than 9% and 25%. The findings of this work could provide guidelines for the structural design of UHPC beams under different loading conditions.http://www.sciencedirect.com/science/article/pii/S2214509523008276Ultra-high performance concreteFlexural performanceShear performanceShear span ratioTruss-arch modelStrut-and-tie model |
| spellingShingle | Ziwei Cai Xinzhi Duan Lingfei Liu Zhoudao Lu Junhong Ye Reinforced ultra-high performance concrete beam under flexure and shear: Experiment and theoretical model Case Studies in Construction Materials Ultra-high performance concrete Flexural performance Shear performance Shear span ratio Truss-arch model Strut-and-tie model |
| title | Reinforced ultra-high performance concrete beam under flexure and shear: Experiment and theoretical model |
| title_full | Reinforced ultra-high performance concrete beam under flexure and shear: Experiment and theoretical model |
| title_fullStr | Reinforced ultra-high performance concrete beam under flexure and shear: Experiment and theoretical model |
| title_full_unstemmed | Reinforced ultra-high performance concrete beam under flexure and shear: Experiment and theoretical model |
| title_short | Reinforced ultra-high performance concrete beam under flexure and shear: Experiment and theoretical model |
| title_sort | reinforced ultra high performance concrete beam under flexure and shear experiment and theoretical model |
| topic | Ultra-high performance concrete Flexural performance Shear performance Shear span ratio Truss-arch model Strut-and-tie model |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523008276 |
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