Experimental and analytical study of the residual performance of reinforced concrete deep beams with circular web openings
The occurrence of fire in high-rise concrete buildings threatens the stability and serviceability of the structures. Reinforced concrete deep beams with web openings are of great importance in tall buildings that serve as a transfer girder. This study focuses on the experimental and analytical inves...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025003159 |
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| author | Mohammad Shabanlou Zeinab Meghdadi Seyed Hamidreza Ghaffar |
| author_facet | Mohammad Shabanlou Zeinab Meghdadi Seyed Hamidreza Ghaffar |
| author_sort | Mohammad Shabanlou |
| collection | DOAJ |
| description | The occurrence of fire in high-rise concrete buildings threatens the stability and serviceability of the structures. Reinforced concrete deep beams with web openings are of great importance in tall buildings that serve as a transfer girder. This study focuses on the experimental and analytical investigation of the behavior of reinforced concrete deep beams after exposure to fire. For this purpose, the location of the opening, which is the most critical factor influencing the behavior of deep beams with openings, was selected as the primary variable. Six full-scale specimens were evaluated, comprising three control specimens and three fire-exposed specimens. The fire-exposed specimens were subjected to ISO 834 standard fire conditions before being loaded to failure in the strong floor laboratory. The results indicated that exposure to fire caused the overall behavior of the beams to become more brittle. Additionally, the reduction in ultimate capacity decreased as the opening was positioned farther from the load path direction. In addition, for the first time, based on the strut-and-tie approach, a method was developed to estimate the ultimate capacity of deep beams with openings after exposure to fire with acceptable accuracy. Using an image processing method to measure the maximum crack widths, it was observed that specimens with openings exhibited greater maximum crack widths compared to solid specimens. Additionally, exposure to fire caused a noticeable reduction in the maximum crack width. |
| format | Article |
| id | doaj-art-ecbce7b3d6424343a28acec70032eb4e |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-ecbce7b3d6424343a28acec70032eb4e2025-02-07T04:48:13ZengElsevierResults in Engineering2590-12302025-03-0125104229Experimental and analytical study of the residual performance of reinforced concrete deep beams with circular web openingsMohammad Shabanlou0Zeinab Meghdadi1Seyed Hamidreza Ghaffar2Department of Civil Engineering, Sharif University of Technology, Azadi Ave, Tehran, IranDepartment of Civil Engineering, Sharif University of Technology, Azadi Ave, Tehran, IranDepartment of Civil Engineering, University of Birmingham, Dubai International Academic City, Dubai P.O. Box 341799, United Arab Emirates; Applied Science Research Center, Applied Science Private University, Jordan; Corresponding author.The occurrence of fire in high-rise concrete buildings threatens the stability and serviceability of the structures. Reinforced concrete deep beams with web openings are of great importance in tall buildings that serve as a transfer girder. This study focuses on the experimental and analytical investigation of the behavior of reinforced concrete deep beams after exposure to fire. For this purpose, the location of the opening, which is the most critical factor influencing the behavior of deep beams with openings, was selected as the primary variable. Six full-scale specimens were evaluated, comprising three control specimens and three fire-exposed specimens. The fire-exposed specimens were subjected to ISO 834 standard fire conditions before being loaded to failure in the strong floor laboratory. The results indicated that exposure to fire caused the overall behavior of the beams to become more brittle. Additionally, the reduction in ultimate capacity decreased as the opening was positioned farther from the load path direction. In addition, for the first time, based on the strut-and-tie approach, a method was developed to estimate the ultimate capacity of deep beams with openings after exposure to fire with acceptable accuracy. Using an image processing method to measure the maximum crack widths, it was observed that specimens with openings exhibited greater maximum crack widths compared to solid specimens. Additionally, exposure to fire caused a noticeable reduction in the maximum crack width.http://www.sciencedirect.com/science/article/pii/S2590123025003159Deep beamsPost-fire performanceExperimental studyStrut-and-tie methodImage processing |
| spellingShingle | Mohammad Shabanlou Zeinab Meghdadi Seyed Hamidreza Ghaffar Experimental and analytical study of the residual performance of reinforced concrete deep beams with circular web openings Results in Engineering Deep beams Post-fire performance Experimental study Strut-and-tie method Image processing |
| title | Experimental and analytical study of the residual performance of reinforced concrete deep beams with circular web openings |
| title_full | Experimental and analytical study of the residual performance of reinforced concrete deep beams with circular web openings |
| title_fullStr | Experimental and analytical study of the residual performance of reinforced concrete deep beams with circular web openings |
| title_full_unstemmed | Experimental and analytical study of the residual performance of reinforced concrete deep beams with circular web openings |
| title_short | Experimental and analytical study of the residual performance of reinforced concrete deep beams with circular web openings |
| title_sort | experimental and analytical study of the residual performance of reinforced concrete deep beams with circular web openings |
| topic | Deep beams Post-fire performance Experimental study Strut-and-tie method Image processing |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025003159 |
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