Shear Performance of Reinforced Concrete Beams with Small Circular Openings Strengthened Using Rectangular and Octagonal-Shaped Reinforcement
An experimental case study was carried out to investigate the shear performance of reinforced concrete beams with small circular openings under a cyclic anti-symmetric bending moment. The openings were strengthened by using a newly developed reinforcement continuously bent into rectangular and octag...
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| Format: | Article |
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MDPI AG
2020-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/24/5804 |
| _version_ | 1797544146740707328 |
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| author | Hyeong-Gook Kim Jung-Yoon Lee Kil-Hee Kim |
| author_facet | Hyeong-Gook Kim Jung-Yoon Lee Kil-Hee Kim |
| author_sort | Hyeong-Gook Kim |
| collection | DOAJ |
| description | An experimental case study was carried out to investigate the shear performance of reinforced concrete beams with small circular openings under a cyclic anti-symmetric bending moment. The openings were strengthened by using a newly developed reinforcement continuously bent into rectangular and octagonal shapes, which was convenient for installation and effective for crack control. The presence of web opening reinforcement, the reinforcing method, and the web opening spacing were employed as main variables in the design of five specimens. The cyclic performance of all specimens was evaluated in terms of failure mode, crack pattern, strength and stiffness degradation, and strain distribution. Experimental results were discussed to assess the suitability of the proposed web opening reinforcement in RC web opening beams. It was confirmed that the proposed web opening reinforcement exhibited outstanding crack control and served as a shear resistance component in place of the concrete cross-section lost due to web openings. Finally, the shear strength of all specimens, obtained from the cyclic loading tests, were compared with those obtained from the equation proposed by Mansur (1998) and the Architectural Institute of Japan standard 2010. |
| first_indexed | 2024-03-10T13:56:16Z |
| format | Article |
| id | doaj.art-824955cce4c54595bd9b4115cbb79ded |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T13:56:16Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-824955cce4c54595bd9b4115cbb79ded2023-11-21T01:36:05ZengMDPI AGMaterials1996-19442020-12-011324580410.3390/ma13245804Shear Performance of Reinforced Concrete Beams with Small Circular Openings Strengthened Using Rectangular and Octagonal-Shaped ReinforcementHyeong-Gook Kim0Jung-Yoon Lee1Kil-Hee Kim2Department of Architectural Engineering, Kongju National University, Cheonandaero, Seobuk, Cheonan 31080, KoreaDepartment of Civil, Architectural, Environmental System Engineering, Sungkyunkwan University, 80, Deogyeongdaero, Jangan, Suwon 16419, KoreaDepartment of Architectural Engineering and Urban Systems Engineering, Kongju National University, Cheonandaero, Seobuk, Cheonan 31080, KoreaAn experimental case study was carried out to investigate the shear performance of reinforced concrete beams with small circular openings under a cyclic anti-symmetric bending moment. The openings were strengthened by using a newly developed reinforcement continuously bent into rectangular and octagonal shapes, which was convenient for installation and effective for crack control. The presence of web opening reinforcement, the reinforcing method, and the web opening spacing were employed as main variables in the design of five specimens. The cyclic performance of all specimens was evaluated in terms of failure mode, crack pattern, strength and stiffness degradation, and strain distribution. Experimental results were discussed to assess the suitability of the proposed web opening reinforcement in RC web opening beams. It was confirmed that the proposed web opening reinforcement exhibited outstanding crack control and served as a shear resistance component in place of the concrete cross-section lost due to web openings. Finally, the shear strength of all specimens, obtained from the cyclic loading tests, were compared with those obtained from the equation proposed by Mansur (1998) and the Architectural Institute of Japan standard 2010.https://www.mdpi.com/1996-1944/13/24/5804web opening reinforcementcyclic loadingshear performancecrack controlstrain distribution |
| spellingShingle | Hyeong-Gook Kim Jung-Yoon Lee Kil-Hee Kim Shear Performance of Reinforced Concrete Beams with Small Circular Openings Strengthened Using Rectangular and Octagonal-Shaped Reinforcement Materials web opening reinforcement cyclic loading shear performance crack control strain distribution |
| title | Shear Performance of Reinforced Concrete Beams with Small Circular Openings Strengthened Using Rectangular and Octagonal-Shaped Reinforcement |
| title_full | Shear Performance of Reinforced Concrete Beams with Small Circular Openings Strengthened Using Rectangular and Octagonal-Shaped Reinforcement |
| title_fullStr | Shear Performance of Reinforced Concrete Beams with Small Circular Openings Strengthened Using Rectangular and Octagonal-Shaped Reinforcement |
| title_full_unstemmed | Shear Performance of Reinforced Concrete Beams with Small Circular Openings Strengthened Using Rectangular and Octagonal-Shaped Reinforcement |
| title_short | Shear Performance of Reinforced Concrete Beams with Small Circular Openings Strengthened Using Rectangular and Octagonal-Shaped Reinforcement |
| title_sort | shear performance of reinforced concrete beams with small circular openings strengthened using rectangular and octagonal shaped reinforcement |
| topic | web opening reinforcement cyclic loading shear performance crack control strain distribution |
| url | https://www.mdpi.com/1996-1944/13/24/5804 |
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