Comparative behaviour of FRP confined square concrete columns under eccentric loading
This study evaluates different methods of strengthening existing square concrete columns under eccentric loading. Sixteen reinforced square concrete columns were cast. The columns were made from normal strength concrete and the reinforcement was kept at minimum simulating columns needing retrofittin...
| Main Authors: | , , |
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| Format: | Conference Paper |
| Published: |
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/17262 |
| _version_ | 1848749417976299520 |
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| author | Lei, X. Pham, Thong Hadi, M. |
| author_facet | Lei, X. Pham, Thong Hadi, M. |
| author_sort | Lei, X. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This study evaluates different methods of strengthening existing square concrete columns under eccentric loading. Sixteen reinforced square concrete columns were cast. The columns were made from normal strength concrete and the reinforcement was kept at minimum simulating columns needing retrofitting. Four columns were modified with round corners and wrapped with three layers of CFRP, four were circularised by circular segments and wrapped with three layers of CFRP, and the last four columns were circularised and confined with steel straps. Specimens from each group were tested under concentric, eccentric (15 or 25 mm) and flexural bending. Results from the study showed that part-circular concrete covers dramatically reduce stress concentration at the corners. FRP wrapped columns with circular segments showed significant increase in load-carrying capacity compared to columns with only round corners. Columns confined with steel straps showed comparable increase in both ultimate load and ductility. |
| first_indexed | 2025-11-14T07:20:37Z |
| format | Conference Paper |
| id | curtin-20.500.11937-17262 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:20:37Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-172622017-05-30T08:14:25Z Comparative behaviour of FRP confined square concrete columns under eccentric loading Lei, X. Pham, Thong Hadi, M. This study evaluates different methods of strengthening existing square concrete columns under eccentric loading. Sixteen reinforced square concrete columns were cast. The columns were made from normal strength concrete and the reinforcement was kept at minimum simulating columns needing retrofitting. Four columns were modified with round corners and wrapped with three layers of CFRP, four were circularised by circular segments and wrapped with three layers of CFRP, and the last four columns were circularised and confined with steel straps. Specimens from each group were tested under concentric, eccentric (15 or 25 mm) and flexural bending. Results from the study showed that part-circular concrete covers dramatically reduce stress concentration at the corners. FRP wrapped columns with circular segments showed significant increase in load-carrying capacity compared to columns with only round corners. Columns confined with steel straps showed comparable increase in both ultimate load and ductility. 2012 Conference Paper http://hdl.handle.net/20.500.11937/17262 restricted |
| spellingShingle | Lei, X. Pham, Thong Hadi, M. Comparative behaviour of FRP confined square concrete columns under eccentric loading |
| title | Comparative behaviour of FRP confined square concrete columns under eccentric loading |
| title_full | Comparative behaviour of FRP confined square concrete columns under eccentric loading |
| title_fullStr | Comparative behaviour of FRP confined square concrete columns under eccentric loading |
| title_full_unstemmed | Comparative behaviour of FRP confined square concrete columns under eccentric loading |
| title_short | Comparative behaviour of FRP confined square concrete columns under eccentric loading |
| title_sort | comparative behaviour of frp confined square concrete columns under eccentric loading |
| url | http://hdl.handle.net/20.500.11937/17262 |