A Study on the Bond–Slip Relationship of the CFRP–Steel Interface of CFRP Strengthened Steel
The bonding interface between the CFRP and the steel plate is the weak link of CFRP-strengthened steel structures. This paper studies the bond–slip relationship of the CFRP–steel interface by experiments and numerical tests. First, a series of double-strap experiments on a CFRP-strengthened steel pl...
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MDPI AG
2022-06-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/12/4187 |
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| author | Xinyan Guo Zuodong Wu Yi Yang Jiahao Bai Qianziyang Zhou |
| author_facet | Xinyan Guo Zuodong Wu Yi Yang Jiahao Bai Qianziyang Zhou |
| author_sort | Xinyan Guo |
| collection | DOAJ |
| description | The bonding interface between the CFRP and the steel plate is the weak link of CFRP-strengthened steel structures. This paper studies the bond–slip relationship of the CFRP–steel interface by experiments and numerical tests. First, a series of double-strap experiments on a CFRP-strengthened steel plate are carried out. The results show that the maximum shear stress of the bonding interface of the Q345B specimen is larger than that of the X100 specimen. The initial slip and maximum slip become larger as the thickness of the bonding interface becomes larger. Finite element analysis of the above tests is carried out; we introduce the maximum stress criterion to simulate the bonding interface, which assumes that when the nominal stress of the material reaches the maximum nominal stress of damage, the material begins to damage. The FE model established has proved very effective for analyzing the bond characteristics of CFRP-strengthened steel plates. Finally, a verification test was carried out, using an FE analysis to verify the accuracy of the modified equations; the results prove that the results of the modified equations are in good agreement with the numerical results and experiment results, which verifies the effectiveness of the equations. |
| first_indexed | 2024-03-09T23:11:31Z |
| format | Article |
| id | doaj.art-2d18cb5cc41f4d09b273ec7dc21e8db5 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T23:11:31Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-2d18cb5cc41f4d09b273ec7dc21e8db52023-11-23T17:44:06ZengMDPI AGMaterials1996-19442022-06-011512418710.3390/ma15124187A Study on the Bond–Slip Relationship of the CFRP–Steel Interface of CFRP Strengthened SteelXinyan Guo0Zuodong Wu1Yi Yang2Jiahao Bai3Qianziyang Zhou4School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaThe bonding interface between the CFRP and the steel plate is the weak link of CFRP-strengthened steel structures. This paper studies the bond–slip relationship of the CFRP–steel interface by experiments and numerical tests. First, a series of double-strap experiments on a CFRP-strengthened steel plate are carried out. The results show that the maximum shear stress of the bonding interface of the Q345B specimen is larger than that of the X100 specimen. The initial slip and maximum slip become larger as the thickness of the bonding interface becomes larger. Finite element analysis of the above tests is carried out; we introduce the maximum stress criterion to simulate the bonding interface, which assumes that when the nominal stress of the material reaches the maximum nominal stress of damage, the material begins to damage. The FE model established has proved very effective for analyzing the bond characteristics of CFRP-strengthened steel plates. Finally, a verification test was carried out, using an FE analysis to verify the accuracy of the modified equations; the results prove that the results of the modified equations are in good agreement with the numerical results and experiment results, which verifies the effectiveness of the equations.https://www.mdpi.com/1996-1944/15/12/4187CFRPsteel platedouble-strap experimentbond–slip modelbond propertiesFE analysis |
| spellingShingle | Xinyan Guo Zuodong Wu Yi Yang Jiahao Bai Qianziyang Zhou A Study on the Bond–Slip Relationship of the CFRP–Steel Interface of CFRP Strengthened Steel Materials CFRP steel plate double-strap experiment bond–slip model bond properties FE analysis |
| title | A Study on the Bond–Slip Relationship of the CFRP–Steel Interface of CFRP Strengthened Steel |
| title_full | A Study on the Bond–Slip Relationship of the CFRP–Steel Interface of CFRP Strengthened Steel |
| title_fullStr | A Study on the Bond–Slip Relationship of the CFRP–Steel Interface of CFRP Strengthened Steel |
| title_full_unstemmed | A Study on the Bond–Slip Relationship of the CFRP–Steel Interface of CFRP Strengthened Steel |
| title_short | A Study on the Bond–Slip Relationship of the CFRP–Steel Interface of CFRP Strengthened Steel |
| title_sort | study on the bond slip relationship of the cfrp steel interface of cfrp strengthened steel |
| topic | CFRP steel plate double-strap experiment bond–slip model bond properties FE analysis |
| url | https://www.mdpi.com/1996-1944/15/12/4187 |
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