Shear behavior of externally prestressed UHPC beams without stirrups
Shear stirrups in a prestressed ultra-high performance concrete (UHPC) beam might be eliminated due to the high tensile strength of UHPC. This research aims to investigate shear behavior of the externally prestressed UHPC beams without stirrups. Thirteen UHPC beams were tested with the experimental...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522008981 |
| _version_ | 1797799020133875712 |
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| author | Jiahui Feng Peisen Li Jinpeng Wu Haibo Jiang Yueqiang Tian Xiangdong Sun |
| author_facet | Jiahui Feng Peisen Li Jinpeng Wu Haibo Jiang Yueqiang Tian Xiangdong Sun |
| author_sort | Jiahui Feng |
| collection | DOAJ |
| description | Shear stirrups in a prestressed ultra-high performance concrete (UHPC) beam might be eliminated due to the high tensile strength of UHPC. This research aims to investigate shear behavior of the externally prestressed UHPC beams without stirrups. Thirteen UHPC beams were tested with the experimental parameters of prestressing level, shear span-to-depth ratio, longitudinal reinforcement ratio, fiber content, and stirrup ratio. The results showed that the beam with the longitudinal reinforcement ratio of 2.0 % under a shear span-to-depth ratio of 2.0 failed in flexure, even though additionally applying a higher prestressing up to 40 % of tensile strength of prestressing tendon. However, the externally prestressed UHPC beams under a shear span-to-depth ratio lower than 2.0 failed in shear. The shear strength of UHPC beam increased with a higher prestressing, lower shear span-to-depth ratio, more longitudinal reinforcements and stirrups, and higher fiber content. French Standard formula and PCI formula for shear design were conservative, irrespective of the existence or absence of stirrups in the prestressed UHPC beam. The calculated results indicated that the externally prestressed UHPC beams met the requirement of shear design codes when no stirrup was employed. |
| first_indexed | 2024-03-13T04:12:38Z |
| format | Article |
| id | doaj.art-89752c265bae4e74b1c006348211e254 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-13T04:12:38Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-89752c265bae4e74b1c006348211e2542023-06-21T06:53:08ZengElsevierCase Studies in Construction Materials2214-50952023-07-0118e01766Shear behavior of externally prestressed UHPC beams without stirrupsJiahui Feng0Peisen Li1Jinpeng Wu2Haibo Jiang3Yueqiang Tian4Xiangdong Sun5School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China; Key Laboratory for Wind and Bridge Engineering of Hunan Province, College of Civil Engineering, Hunan University, Changsha 410082, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China; Corresponding author.Zhonglu Dura International Engineering Co. Ltd, Guangzhou 510627, ChinaGuangdong Communication Planning and Design Institute Co. Ltd, Guangzhou 510507, ChinaShear stirrups in a prestressed ultra-high performance concrete (UHPC) beam might be eliminated due to the high tensile strength of UHPC. This research aims to investigate shear behavior of the externally prestressed UHPC beams without stirrups. Thirteen UHPC beams were tested with the experimental parameters of prestressing level, shear span-to-depth ratio, longitudinal reinforcement ratio, fiber content, and stirrup ratio. The results showed that the beam with the longitudinal reinforcement ratio of 2.0 % under a shear span-to-depth ratio of 2.0 failed in flexure, even though additionally applying a higher prestressing up to 40 % of tensile strength of prestressing tendon. However, the externally prestressed UHPC beams under a shear span-to-depth ratio lower than 2.0 failed in shear. The shear strength of UHPC beam increased with a higher prestressing, lower shear span-to-depth ratio, more longitudinal reinforcements and stirrups, and higher fiber content. French Standard formula and PCI formula for shear design were conservative, irrespective of the existence or absence of stirrups in the prestressed UHPC beam. The calculated results indicated that the externally prestressed UHPC beams met the requirement of shear design codes when no stirrup was employed.http://www.sciencedirect.com/science/article/pii/S2214509522008981Ultra-high performance concrete (UHPC)Fiber contentShear behavior, without stirrupsExternally prestressed beams |
| spellingShingle | Jiahui Feng Peisen Li Jinpeng Wu Haibo Jiang Yueqiang Tian Xiangdong Sun Shear behavior of externally prestressed UHPC beams without stirrups Case Studies in Construction Materials Ultra-high performance concrete (UHPC) Fiber content Shear behavior, without stirrups Externally prestressed beams |
| title | Shear behavior of externally prestressed UHPC beams without stirrups |
| title_full | Shear behavior of externally prestressed UHPC beams without stirrups |
| title_fullStr | Shear behavior of externally prestressed UHPC beams without stirrups |
| title_full_unstemmed | Shear behavior of externally prestressed UHPC beams without stirrups |
| title_short | Shear behavior of externally prestressed UHPC beams without stirrups |
| title_sort | shear behavior of externally prestressed uhpc beams without stirrups |
| topic | Ultra-high performance concrete (UHPC) Fiber content Shear behavior, without stirrups Externally prestressed beams |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522008981 |
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