STRENGTHENING OF CIRCULAR REINFORCED CONCRETE COLUMNS TO FOUNDATION CONNECTION WITH GFRP BARS AND CFRP SHEETS
Bridges play a significant role in developing the roads and accelerating the serviceability in normal and emergency situations. The corrosion problem of steel reinforcing bar...
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| Format: | Article |
| Language: | fas |
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Sharif University of Technology
2020-05-01
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| Series: | مهندسی عمران شریف |
| Subjects: | |
| Online Access: | https://sjce.journals.sharif.edu/article_21184_9e5c0aada3f337c95292d4cceb1d63d9.pdf |
| _version_ | 1827862063804841984 |
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| author | S. M. Miralami M.R. Esfahani M.R Tavakkolizadeh |
| author_facet | S. M. Miralami M.R. Esfahani M.R Tavakkolizadeh |
| author_sort | S. M. Miralami |
| collection | DOAJ |
| description | Bridges play a significant role in developing the roads and accelerating the
serviceability in normal and emergency situations. The corrosion problem of
steel reinforcing bars in reinforced concrete columns of bridges in humid
environments results in the early deterioration of these structures. Therefore,
it is vital to use the efficient and cost-effective strengthening methods to
increase the serviceability of these structures in critical situations. In this
study, the strengthening of circular reinforced concrete column to foundation
connections with fiber reinforced polymers is investigated. In the experimental
part of the study, four specimens of column-foundation connections were cast
and tested. One specimen was used as the control specimen without strengthening. Two other specimens were strengthened with GFRP reinforcing bars of different sizes. The fourth specimen was strengthened with both of GFRP
reinforcing bars and CFRP sheets. These specimens were under constant axial
compressive load and cyclic lateral displacement, simultaneously. Initial
stiffness, energy dissipation capacity, lateral load capacity and ductility of
the specimens are studied. In order to investigate the ability of the ABAQUS
software, the experimental specimens were simulated in the aforementioned
software. Test results show that the amount of lateral load capacity, initial
stiffness, energy dissipation capacity and ductility increase significantly due
to flexural strengthening of circular reinforced concrete column to foundation
connections with GFRP bars. The highest increase in the amount of the
aforementioned parameters is observed in the specimen strengthened with GFRP
bars and CFRP sheets. The analytical results also show good agreement with the
experimental results. The main difference between the analytical and experimental results is due to the simulation of pinching effect of the experimental results. |
| first_indexed | 2024-03-12T13:48:08Z |
| format | Article |
| id | doaj.art-7d7a494d06184ac2a648fd9567d02100 |
| institution | Directory Open Access Journal |
| issn | 2676-4768 2676-4776 |
| language | fas |
| last_indexed | 2024-03-12T13:48:08Z |
| publishDate | 2020-05-01 |
| publisher | Sharif University of Technology |
| record_format | Article |
| series | مهندسی عمران شریف |
| spelling | doaj.art-7d7a494d06184ac2a648fd9567d021002023-08-23T08:02:32ZfasSharif University of Technologyمهندسی عمران شریف2676-47682676-47762020-05-0136.21.2758310.24200/j30.2018.51001.236021184STRENGTHENING OF CIRCULAR REINFORCED CONCRETE COLUMNS TO FOUNDATION CONNECTION WITH GFRP BARS AND CFRP SHEETSS. M. Miralami0M.R. Esfahani1M.R Tavakkolizadeh2Dept. of Engineering Ferdowsi University of MashhadDept. of Engineering Ferdowsi University of MashhadDept. of Engineering Ferdowsi University of MashhadBridges play a significant role in developing the roads and accelerating the serviceability in normal and emergency situations. The corrosion problem of steel reinforcing bars in reinforced concrete columns of bridges in humid environments results in the early deterioration of these structures. Therefore, it is vital to use the efficient and cost-effective strengthening methods to increase the serviceability of these structures in critical situations. In this study, the strengthening of circular reinforced concrete column to foundation connections with fiber reinforced polymers is investigated. In the experimental part of the study, four specimens of column-foundation connections were cast and tested. One specimen was used as the control specimen without strengthening. Two other specimens were strengthened with GFRP reinforcing bars of different sizes. The fourth specimen was strengthened with both of GFRP reinforcing bars and CFRP sheets. These specimens were under constant axial compressive load and cyclic lateral displacement, simultaneously. Initial stiffness, energy dissipation capacity, lateral load capacity and ductility of the specimens are studied. In order to investigate the ability of the ABAQUS software, the experimental specimens were simulated in the aforementioned software. Test results show that the amount of lateral load capacity, initial stiffness, energy dissipation capacity and ductility increase significantly due to flexural strengthening of circular reinforced concrete column to foundation connections with GFRP bars. The highest increase in the amount of the aforementioned parameters is observed in the specimen strengthened with GFRP bars and CFRP sheets. The analytical results also show good agreement with the experimental results. The main difference between the analytical and experimental results is due to the simulation of pinching effect of the experimental results.https://sjce.journals.sharif.edu/article_21184_9e5c0aada3f337c95292d4cceb1d63d9.pdfstrengtheningreinforced concrete column to foundation connectionstiffnessenergy dissipation. gfrp |
| spellingShingle | S. M. Miralami M.R. Esfahani M.R Tavakkolizadeh STRENGTHENING OF CIRCULAR REINFORCED CONCRETE COLUMNS TO FOUNDATION CONNECTION WITH GFRP BARS AND CFRP SHEETS مهندسی عمران شریف strengthening reinforced concrete column to foundation connection stiffness energy dissipation. gfrp |
| title | STRENGTHENING OF CIRCULAR REINFORCED CONCRETE COLUMNS TO FOUNDATION CONNECTION WITH GFRP BARS AND CFRP SHEETS |
| title_full | STRENGTHENING OF CIRCULAR REINFORCED CONCRETE COLUMNS TO FOUNDATION CONNECTION WITH GFRP BARS AND CFRP SHEETS |
| title_fullStr | STRENGTHENING OF CIRCULAR REINFORCED CONCRETE COLUMNS TO FOUNDATION CONNECTION WITH GFRP BARS AND CFRP SHEETS |
| title_full_unstemmed | STRENGTHENING OF CIRCULAR REINFORCED CONCRETE COLUMNS TO FOUNDATION CONNECTION WITH GFRP BARS AND CFRP SHEETS |
| title_short | STRENGTHENING OF CIRCULAR REINFORCED CONCRETE COLUMNS TO FOUNDATION CONNECTION WITH GFRP BARS AND CFRP SHEETS |
| title_sort | strengthening of circular reinforced concrete columns to foundation connection with gfrp bars and cfrp sheets |
| topic | strengthening reinforced concrete column to foundation connection stiffness energy dissipation. gfrp |
| url | https://sjce.journals.sharif.edu/article_21184_9e5c0aada3f337c95292d4cceb1d63d9.pdf |
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