Study on reinforced concrete beam-column joints subjected to different fires and loadings considering CFRP retrofitting
This paper investigates the postfire performance of reinforced concrete beam-column joints under monotonic and cyclic loadings with and without Carbon Fiber Reinforced Polymer (CFRP) retrofitting. Experiments were conducted on nine beam-column joints. One of these was not exposed to fire to be used...
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| Format: | Article |
| Language: | English |
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HO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCE
2024-06-01
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| Series: | Tạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ |
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| Online Access: | https://journalofscience.ou.edu.vn/index.php/tech-vi/article/view/3293 |
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| author | Đoàn Văn Đẹt Đinh Hoài Luân Võ Bá Huy Cao Văn Vui |
| author_facet | Đoàn Văn Đẹt Đinh Hoài Luân Võ Bá Huy Cao Văn Vui |
| author_sort | Đoàn Văn Đẹt |
| collection | DOAJ |
| description | This paper investigates the postfire performance of reinforced concrete beam-column joints under monotonic and cyclic loadings with and without Carbon Fiber Reinforced Polymer (CFRP) retrofitting. Experiments were conducted on nine beam-column joints. One of these was not exposed to fire to be used as a control specimen. The other eight specimens were separated into two groups, which were exposed to 45-min and 75-min fires. After exposure to fire, in each group, one pair of joints were retrofitted with CFRP, while the other pair were not retrofitted. Of each pair, one joint was subjected to monotonic loading, while the other joint was subjected to cyclic loading. The results of fire tests indicated that, after fire exposure, the concrete color changed from grey to light pink. Under loading, a plastic hinge appeared at the beam end close to the column surface, and diagonal cracks appeared at the intersection of the beam and columns. The load-carrying capacity of joints was reduced by about 11% due to fire exposure. The ultimate load of CFRP-retrofitted joints was 12.9 - 17.1% higher than that of the control joint. |
| format | Article |
| id | doaj-art-4489adfbb016400b92d575436b4e655e |
| institution | Kabale University |
| issn | 2734-9322 2734-9594 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | HO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCE |
| record_format | Article |
| series | Tạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ |
| spelling | doaj-art-4489adfbb016400b92d575436b4e655e2025-01-11T06:52:59ZengHO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCETạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ2734-93222734-95942024-06-01192849610.46223/HCMCOUJS.tech.vi.19.2.3293.20242155Study on reinforced concrete beam-column joints subjected to different fires and loadings considering CFRP retrofittingĐoàn Văn Đẹt0Đinh Hoài Luân1Võ Bá Huy2Cao Văn Vui3Trường Đại học Xây dựng miền Tây, Vĩnh LongTrường Đại học Xây dựng miền Tây, Vĩnh LongTrường Đại học Xây dựng miền Tây, Vĩnh LongTrường Đại Học Bách Khoa Thành phố Hồ Chí Minh, Thành phố Hồ Chí Minh Đại học Quốc Gia Thành Phố Hồ Chí Minh, Thành phố Hồ Chí MinhThis paper investigates the postfire performance of reinforced concrete beam-column joints under monotonic and cyclic loadings with and without Carbon Fiber Reinforced Polymer (CFRP) retrofitting. Experiments were conducted on nine beam-column joints. One of these was not exposed to fire to be used as a control specimen. The other eight specimens were separated into two groups, which were exposed to 45-min and 75-min fires. After exposure to fire, in each group, one pair of joints were retrofitted with CFRP, while the other pair were not retrofitted. Of each pair, one joint was subjected to monotonic loading, while the other joint was subjected to cyclic loading. The results of fire tests indicated that, after fire exposure, the concrete color changed from grey to light pink. Under loading, a plastic hinge appeared at the beam end close to the column surface, and diagonal cracks appeared at the intersection of the beam and columns. The load-carrying capacity of joints was reduced by about 11% due to fire exposure. The ultimate load of CFRP-retrofitted joints was 12.9 - 17.1% higher than that of the control joint.https://journalofscience.ou.edu.vn/index.php/tech-vi/article/view/3293cfrpcháygia cườngkhả năng chịu tảinút dầm-cột |
| spellingShingle | Đoàn Văn Đẹt Đinh Hoài Luân Võ Bá Huy Cao Văn Vui Study on reinforced concrete beam-column joints subjected to different fires and loadings considering CFRP retrofitting Tạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ cfrp cháy gia cường khả năng chịu tải nút dầm-cột |
| title | Study on reinforced concrete beam-column joints subjected to different fires and loadings considering CFRP retrofitting |
| title_full | Study on reinforced concrete beam-column joints subjected to different fires and loadings considering CFRP retrofitting |
| title_fullStr | Study on reinforced concrete beam-column joints subjected to different fires and loadings considering CFRP retrofitting |
| title_full_unstemmed | Study on reinforced concrete beam-column joints subjected to different fires and loadings considering CFRP retrofitting |
| title_short | Study on reinforced concrete beam-column joints subjected to different fires and loadings considering CFRP retrofitting |
| title_sort | study on reinforced concrete beam column joints subjected to different fires and loadings considering cfrp retrofitting |
| topic | cfrp cháy gia cường khả năng chịu tải nút dầm-cột |
| url | https://journalofscience.ou.edu.vn/index.php/tech-vi/article/view/3293 |
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