Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics
Earthquakes worldwide highlight the seismic vulnerability of reinforced concrete (RC) bridge columns. RC bridges are likely to collapse or lose service function due to damage to the bridge columns from strong earthquakes. Rapid repair of RC bridge columns is of great significance for maintaining tra...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/21/7443 |
| _version_ | 1797467503084961792 |
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| author | Laijun Liu Song Lei Fangwen Wu Weiwei Lin Kai Peng Xiangyan Fan |
| author_facet | Laijun Liu Song Lei Fangwen Wu Weiwei Lin Kai Peng Xiangyan Fan |
| author_sort | Laijun Liu |
| collection | DOAJ |
| description | Earthquakes worldwide highlight the seismic vulnerability of reinforced concrete (RC) bridge columns. RC bridges are likely to collapse or lose service function due to damage to the bridge columns from strong earthquakes. Rapid repair of RC bridge columns is of great significance for maintaining traffic lines for emergency rescue work after earthquakes. In this study, an improved rapid repair method was developed to restore the bearing capacity of a damaged precast column after earthquake damage. A cyclic loading test was performed to simulate the seismic loading. The original column and the repaired column were both tested. The test results showed that the bearing capacity of the repaired columns was increased by 8%, and the energy dissipation capacity was 53% higher than that of the original column. The ductility decreased because the test for the repaired specimen ended in advance. The initial stiffness of the repaired columns was reduced, but the stiffness was significantly developed in the later loading stage. The rapid repair method proposed in this study exhibited an excellent effect on restoring the seismic resistance of the damaged columns. |
| first_indexed | 2024-03-09T18:53:35Z |
| format | Article |
| id | doaj.art-34924fc417374ca2897268a836995745 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T18:53:35Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-34924fc417374ca2897268a8369957452023-11-24T05:35:18ZengMDPI AGMaterials1996-19442022-10-011521744310.3390/ma15217443Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP FabricsLaijun Liu0Song Lei1Fangwen Wu2Weiwei Lin3Kai Peng4Xiangyan Fan5School of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaDepartment of Civil Engineering, Aalto University, 02150 Espoo, FinlandSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaEarthquakes worldwide highlight the seismic vulnerability of reinforced concrete (RC) bridge columns. RC bridges are likely to collapse or lose service function due to damage to the bridge columns from strong earthquakes. Rapid repair of RC bridge columns is of great significance for maintaining traffic lines for emergency rescue work after earthquakes. In this study, an improved rapid repair method was developed to restore the bearing capacity of a damaged precast column after earthquake damage. A cyclic loading test was performed to simulate the seismic loading. The original column and the repaired column were both tested. The test results showed that the bearing capacity of the repaired columns was increased by 8%, and the energy dissipation capacity was 53% higher than that of the original column. The ductility decreased because the test for the repaired specimen ended in advance. The initial stiffness of the repaired columns was reduced, but the stiffness was significantly developed in the later loading stage. The rapid repair method proposed in this study exhibited an excellent effect on restoring the seismic resistance of the damaged columns.https://www.mdpi.com/1996-1944/15/21/7443precast columnrapid repairCFRP fabricscyclic loadseismic performance |
| spellingShingle | Laijun Liu Song Lei Fangwen Wu Weiwei Lin Kai Peng Xiangyan Fan Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics Materials precast column rapid repair CFRP fabrics cyclic load seismic performance |
| title | Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics |
| title_full | Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics |
| title_fullStr | Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics |
| title_full_unstemmed | Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics |
| title_short | Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics |
| title_sort | experimental study on seismic performance of precast columns repaired with cfrp fabrics |
| topic | precast column rapid repair CFRP fabrics cyclic load seismic performance |
| url | https://www.mdpi.com/1996-1944/15/21/7443 |
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